Add cs42l43 PC focused SoundWire CODEC

Merge series from Charles Keepax <ckeepax@opensource.cirrus.com>:

This patch chain adds support for the Cirrus Logic cs42l43 PC focused
SoundWire CODEC.

Documentation/ABI/testing/sysfs-bus-cxl

@@ -82,7 +82,12 @@ Description:
 		whether it resides in persistent capacity, volatile capacity,
 		or the LSA, is made permanently unavailable by whatever means
 		is appropriate for the media type. This functionality requires
-		the device to be not be actively decoding any HPA ranges.
+		the device to be disabled, that is, not actively decoding any
+		HPA ranges. This permits avoiding explicit global CPU cache
+		management, relying instead for it to be done when a region
+		transitions between software programmed and hardware committed
+		states. If this file is not present, then there is no hardware
+		support for the operation.
 
 
 What            /sys/bus/cxl/devices/memX/security/erase
@@ -92,7 +97,13 @@ Contact:        linux-cxl@vger.kernel.org
 Description:
 		(WO) Write a boolean 'true' string value to this attribute to
 		secure erase user data by changing the media encryption keys for
-		all user data areas of the device.
+		all user data areas of the device. This functionality requires
+		the device to be disabled, that is, not actively decoding any
+		HPA ranges. This permits avoiding explicit global CPU cache
+		management, relying instead for it to be done when a region
+		transitions between software programmed and hardware committed
+		states. If this file is not present, then there is no hardware
+		support for the operation.
 
 
 What:		/sys/bus/cxl/devices/memX/firmware/

Documentation/ABI/testing/sysfs-devices-system-cpu

@@ -513,17 +513,18 @@ Description:	information about CPUs heterogeneity.
 		cpu_capacity: capacity of cpuX.
 
 What:		/sys/devices/system/cpu/vulnerabilities
-		/sys/devices/system/cpu/vulnerabilities/meltdown
+		/sys/devices/system/cpu/vulnerabilities/gather_data_sampling
-		/sys/devices/system/cpu/vulnerabilities/spectre_v1
+		/sys/devices/system/cpu/vulnerabilities/itlb_multihit
-		/sys/devices/system/cpu/vulnerabilities/spectre_v2
-		/sys/devices/system/cpu/vulnerabilities/spec_store_bypass
 		/sys/devices/system/cpu/vulnerabilities/l1tf
 		/sys/devices/system/cpu/vulnerabilities/mds
-		/sys/devices/system/cpu/vulnerabilities/srbds
+		/sys/devices/system/cpu/vulnerabilities/meltdown
-		/sys/devices/system/cpu/vulnerabilities/tsx_async_abort
-		/sys/devices/system/cpu/vulnerabilities/itlb_multihit
 		/sys/devices/system/cpu/vulnerabilities/mmio_stale_data
 		/sys/devices/system/cpu/vulnerabilities/retbleed
+		/sys/devices/system/cpu/vulnerabilities/spec_store_bypass
+		/sys/devices/system/cpu/vulnerabilities/spectre_v1
+		/sys/devices/system/cpu/vulnerabilities/spectre_v2
+		/sys/devices/system/cpu/vulnerabilities/srbds
+		/sys/devices/system/cpu/vulnerabilities/tsx_async_abort
 Date:		January 2018
 Contact:	Linux kernel mailing list <linux-kernel@vger.kernel.org>
 Description:	Information about CPU vulnerabilities

Documentation/ABI/testing/sysfs-platform-hidma

@@ -2,7 +2,7 @@ What:		/sys/devices/platform/hidma-*/chid
 		/sys/devices/platform/QCOM8061:*/chid
 Date:		Dec 2015
 KernelVersion:	4.4
-Contact:	"Sinan Kaya <okaya@codeaurora.org>"
+Contact:	"Sinan Kaya <okaya@kernel.org>"
 Description:
 		Contains the ID of the channel within the HIDMA instance.
 		It is used to associate a given HIDMA channel with the

Documentation/ABI/testing/sysfs-platform-hidma-mgmt

@@ -2,7 +2,7 @@ What:		/sys/devices/platform/hidma-mgmt*/chanops/chan*/priority
 		/sys/devices/platform/QCOM8060:*/chanops/chan*/priority
 Date:		Nov 2015
 KernelVersion:	4.4
-Contact:	"Sinan Kaya <okaya@codeaurora.org>"
+Contact:	"Sinan Kaya <okaya@kernel.org>"
 Description:
 		Contains either 0 or 1 and indicates if the DMA channel is a
 		low priority (0) or high priority (1) channel.
@@ -11,7 +11,7 @@ What:		/sys/devices/platform/hidma-mgmt*/chanops/chan*/weight
 		/sys/devices/platform/QCOM8060:*/chanops/chan*/weight
 Date:		Nov 2015
 KernelVersion:	4.4
-Contact:	"Sinan Kaya <okaya@codeaurora.org>"
+Contact:	"Sinan Kaya <okaya@kernel.org>"
 Description:
 		Contains 0..15 and indicates the weight of the channel among
 		equal priority channels during round robin scheduling.
@@ -20,7 +20,7 @@ What:		/sys/devices/platform/hidma-mgmt*/chreset_timeout_cycles
 		/sys/devices/platform/QCOM8060:*/chreset_timeout_cycles
 Date:		Nov 2015
 KernelVersion:	4.4
-Contact:	"Sinan Kaya <okaya@codeaurora.org>"
+Contact:	"Sinan Kaya <okaya@kernel.org>"
 Description:
 		Contains the platform specific cycle value to wait after a
 		reset command is issued. If the value is chosen too short,
@@ -32,7 +32,7 @@ What:		/sys/devices/platform/hidma-mgmt*/dma_channels
 		/sys/devices/platform/QCOM8060:*/dma_channels
 Date:		Nov 2015
 KernelVersion:	4.4
-Contact:	"Sinan Kaya <okaya@codeaurora.org>"
+Contact:	"Sinan Kaya <okaya@kernel.org>"
 Description:
 		Contains the number of dma channels supported by one instance
 		of HIDMA hardware. The value may change from chip to chip.
@@ -41,7 +41,7 @@ What:		/sys/devices/platform/hidma-mgmt*/hw_version_major
 		/sys/devices/platform/QCOM8060:*/hw_version_major
 Date:		Nov 2015
 KernelVersion:	4.4
-Contact:	"Sinan Kaya <okaya@codeaurora.org>"
+Contact:	"Sinan Kaya <okaya@kernel.org>"
 Description:
 		Version number major for the hardware.
 
@@ -49,7 +49,7 @@ What:		/sys/devices/platform/hidma-mgmt*/hw_version_minor
 		/sys/devices/platform/QCOM8060:*/hw_version_minor
 Date:		Nov 2015
 KernelVersion:	4.4
-Contact:	"Sinan Kaya <okaya@codeaurora.org>"
+Contact:	"Sinan Kaya <okaya@kernel.org>"
 Description:
 		Version number minor for the hardware.
 
@@ -57,7 +57,7 @@ What:		/sys/devices/platform/hidma-mgmt*/max_rd_xactions
 		/sys/devices/platform/QCOM8060:*/max_rd_xactions
 Date:		Nov 2015
 KernelVersion:	4.4
-Contact:	"Sinan Kaya <okaya@codeaurora.org>"
+Contact:	"Sinan Kaya <okaya@kernel.org>"
 Description:
 		Contains a value between 0 and 31. Maximum number of
 		read transactions that can be issued back to back.
@@ -69,7 +69,7 @@ What:		/sys/devices/platform/hidma-mgmt*/max_read_request
 		/sys/devices/platform/QCOM8060:*/max_read_request
 Date:		Nov 2015
 KernelVersion:	4.4
-Contact:	"Sinan Kaya <okaya@codeaurora.org>"
+Contact:	"Sinan Kaya <okaya@kernel.org>"
 Description:
 		Size of each read request. The value needs to be a power
 		of two and can be between 128 and 1024.
@@ -78,7 +78,7 @@ What:		/sys/devices/platform/hidma-mgmt*/max_wr_xactions
 		/sys/devices/platform/QCOM8060:*/max_wr_xactions
 Date:		Nov 2015
 KernelVersion:	4.4
-Contact:	"Sinan Kaya <okaya@codeaurora.org>"
+Contact:	"Sinan Kaya <okaya@kernel.org>"
 Description:
 		Contains a value between 0 and 31. Maximum number of
 		write transactions that can be issued back to back.
@@ -91,7 +91,7 @@ What:		/sys/devices/platform/hidma-mgmt*/max_write_request
 		/sys/devices/platform/QCOM8060:*/max_write_request
 Date:		Nov 2015
 KernelVersion:	4.4
-Contact:	"Sinan Kaya <okaya@codeaurora.org>"
+Contact:	"Sinan Kaya <okaya@kernel.org>"
 Description:
 		Size of each write request. The value needs to be a power
 		of two and can be between 128 and 1024.

Documentation/admin-guide/hw-vuln/gather_data_sampling.rst

@@ -0,0 +1,109 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+GDS - Gather Data Sampling
+==========================
+
+Gather Data Sampling is a hardware vulnerability which allows unprivileged
+speculative access to data which was previously stored in vector registers.
+
+Problem
+-------
+When a gather instruction performs loads from memory, different data elements
+are merged into the destination vector register. However, when a gather
+instruction that is transiently executed encounters a fault, stale data from
+architectural or internal vector registers may get transiently forwarded to the
+destination vector register instead. This will allow a malicious attacker to
+infer stale data using typical side channel techniques like cache timing
+attacks. GDS is a purely sampling-based attack.
+
+The attacker uses gather instructions to infer the stale vector register data.
+The victim does not need to do anything special other than use the vector
+registers. The victim does not need to use gather instructions to be
+vulnerable.
+
+Because the buffers are shared between Hyper-Threads cross Hyper-Thread attacks
+are possible.
+
+Attack scenarios
+----------------
+Without mitigation, GDS can infer stale data across virtually all
+permission boundaries:
+
+	Non-enclaves can infer SGX enclave data
+	Userspace can infer kernel data
+	Guests can infer data from hosts
+	Guest can infer guest from other guests
+	Users can infer data from other users
+
+Because of this, it is important to ensure that the mitigation stays enabled in
+lower-privilege contexts like guests and when running outside SGX enclaves.
+
+The hardware enforces the mitigation for SGX. Likewise, VMMs should  ensure
+that guests are not allowed to disable the GDS mitigation. If a host erred and
+allowed this, a guest could theoretically disable GDS mitigation, mount an
+attack, and re-enable it.
+
+Mitigation mechanism
+--------------------
+This issue is mitigated in microcode. The microcode defines the following new
+bits:
+
+ ================================   ===   ============================
+ IA32_ARCH_CAPABILITIES[GDS_CTRL]   R/O   Enumerates GDS vulnerability
+                                          and mitigation support.
+ IA32_ARCH_CAPABILITIES[GDS_NO]     R/O   Processor is not vulnerable.
+ IA32_MCU_OPT_CTRL[GDS_MITG_DIS]    R/W   Disables the mitigation
+                                          0 by default.
+ IA32_MCU_OPT_CTRL[GDS_MITG_LOCK]   R/W   Locks GDS_MITG_DIS=0. Writes
+                                          to GDS_MITG_DIS are ignored
+                                          Can't be cleared once set.
+ ================================   ===   ============================
+
+GDS can also be mitigated on systems that don't have updated microcode by
+disabling AVX. This can be done by setting gather_data_sampling="force" or
+"clearcpuid=avx" on the kernel command-line.
+
+If used, these options will disable AVX use by turning off XSAVE YMM support.
+However, the processor will still enumerate AVX support.  Userspace that
+does not follow proper AVX enumeration to check both AVX *and* XSAVE YMM
+support will break.
+
+Mitigation control on the kernel command line
+---------------------------------------------
+The mitigation can be disabled by setting "gather_data_sampling=off" or
+"mitigations=off" on the kernel command line. Not specifying either will default
+to the mitigation being enabled. Specifying "gather_data_sampling=force" will
+use the microcode mitigation when available or disable AVX on affected systems
+where the microcode hasn't been updated to include the mitigation.
+
+GDS System Information
+------------------------
+The kernel provides vulnerability status information through sysfs. For
+GDS this can be accessed by the following sysfs file:
+
+/sys/devices/system/cpu/vulnerabilities/gather_data_sampling
+
+The possible values contained in this file are:
+
+ ============================== =============================================
+ Not affected                   Processor not vulnerable.
+ Vulnerable                     Processor vulnerable and mitigation disabled.
+ Vulnerable: No microcode       Processor vulnerable and microcode is missing
+                                mitigation.
+ Mitigation: AVX disabled,
+ no microcode                   Processor is vulnerable and microcode is missing
+                                mitigation. AVX disabled as mitigation.
+ Mitigation: Microcode          Processor is vulnerable and mitigation is in
+                                effect.
+ Mitigation: Microcode (locked) Processor is vulnerable and mitigation is in
+                                effect and cannot be disabled.
+ Unknown: Dependent on
+ hypervisor status              Running on a virtual guest processor that is
+                                affected but with no way to know if host
+                                processor is mitigated or vulnerable.
+ ============================== =============================================
+
+GDS Default mitigation
+----------------------
+The updated microcode will enable the mitigation by default. The kernel's
+default action is to leave the mitigation enabled.

Documentation/admin-guide/hw-vuln/index.rst

@@ -13,9 +13,11 @@ are configurable at compile, boot or run time.
    l1tf
    mds
    tsx_async_abort
-   multihit.rst
+   multihit
-   special-register-buffer-data-sampling.rst
+   special-register-buffer-data-sampling
-   core-scheduling.rst
+   core-scheduling
-   l1d_flush.rst
+   l1d_flush
-   processor_mmio_stale_data.rst
+   processor_mmio_stale_data
-   cross-thread-rsb.rst
+   cross-thread-rsb
+   srso
+   gather_data_sampling

Documentation/admin-guide/hw-vuln/srso.rst

@@ -0,0 +1,150 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+Speculative Return Stack Overflow (SRSO)
+========================================
+
+This is a mitigation for the speculative return stack overflow (SRSO)
+vulnerability found on AMD processors. The mechanism is by now the well
+known scenario of poisoning CPU functional units - the Branch Target
+Buffer (BTB) and Return Address Predictor (RAP) in this case - and then
+tricking the elevated privilege domain (the kernel) into leaking
+sensitive data.
+
+AMD CPUs predict RET instructions using a Return Address Predictor (aka
+Return Address Stack/Return Stack Buffer). In some cases, a non-architectural
+CALL instruction (i.e., an instruction predicted to be a CALL but is
+not actually a CALL) can create an entry in the RAP which may be used
+to predict the target of a subsequent RET instruction.
+
+The specific circumstances that lead to this varies by microarchitecture
+but the concern is that an attacker can mis-train the CPU BTB to predict
+non-architectural CALL instructions in kernel space and use this to
+control the speculative target of a subsequent kernel RET, potentially
+leading to information disclosure via a speculative side-channel.
+
+The issue is tracked under CVE-2023-20569.
+
+Affected processors
+-------------------
+
+AMD Zen, generations 1-4. That is, all families 0x17 and 0x19. Older
+processors have not been investigated.
+
+System information and options
+------------------------------
+
+First of all, it is required that the latest microcode be loaded for
+mitigations to be effective.
+
+The sysfs file showing SRSO mitigation status is:
+
+  /sys/devices/system/cpu/vulnerabilities/spec_rstack_overflow
+
+The possible values in this file are:
+
+ * 'Not affected':
+
+   The processor is not vulnerable
+
+ * 'Vulnerable: no microcode':
+
+   The processor is vulnerable, no microcode extending IBPB
+   functionality to address the vulnerability has been applied.
+
+ * 'Mitigation: microcode':
+
+   Extended IBPB functionality microcode patch has been applied. It does
+   not address User->Kernel and Guest->Host transitions protection but it
+   does address User->User and VM->VM attack vectors.
+
+   Note that User->User mitigation is controlled by how the IBPB aspect in
+   the Spectre v2 mitigation is selected:
+
+    * conditional IBPB:
+
+      where each process can select whether it needs an IBPB issued
+      around it PR_SPEC_DISABLE/_ENABLE etc, see :doc:`spectre`
+
+    * strict:
+
+      i.e., always on - by supplying spectre_v2_user=on on the kernel
+      command line
+
+   (spec_rstack_overflow=microcode)
+
+ * 'Mitigation: safe RET':
+
+   Software-only mitigation. It complements the extended IBPB microcode
+   patch functionality by addressing User->Kernel and Guest->Host
+   transitions protection.
+
+   Selected by default or by spec_rstack_overflow=safe-ret
+
+ * 'Mitigation: IBPB':
+
+   Similar protection as "safe RET" above but employs an IBPB barrier on
+   privilege domain crossings (User->Kernel, Guest->Host).
+
+  (spec_rstack_overflow=ibpb)
+
+ * 'Mitigation: IBPB on VMEXIT':
+
+   Mitigation addressing the cloud provider scenario - the Guest->Host
+   transitions only.
+
+   (spec_rstack_overflow=ibpb-vmexit)
+
+
+
+In order to exploit vulnerability, an attacker needs to:
+
+ - gain local access on the machine
+
+ - break kASLR
+
+ - find gadgets in the running kernel in order to use them in the exploit
+
+ - potentially create and pin an additional workload on the sibling
+   thread, depending on the microarchitecture (not necessary on fam 0x19)
+
+ - run the exploit
+
+Considering the performance implications of each mitigation type, the
+default one is 'Mitigation: safe RET' which should take care of most
+attack vectors, including the local User->Kernel one.
+
+As always, the user is advised to keep her/his system up-to-date by
+applying software updates regularly.
+
+The default setting will be reevaluated when needed and especially when
+new attack vectors appear.
+
+As one can surmise, 'Mitigation: safe RET' does come at the cost of some
+performance depending on the workload. If one trusts her/his userspace
+and does not want to suffer the performance impact, one can always
+disable the mitigation with spec_rstack_overflow=off.
+
+Similarly, 'Mitigation: IBPB' is another full mitigation type employing
+an indrect branch prediction barrier after having applied the required
+microcode patch for one's system. This mitigation comes also at
+a performance cost.
+
+Mitigation: safe RET
+--------------------
+
+The mitigation works by ensuring all RET instructions speculate to
+a controlled location, similar to how speculation is controlled in the
+retpoline sequence.  To accomplish this, the __x86_return_thunk forces
+the CPU to mispredict every function return using a 'safe return'
+sequence.
+
+To ensure the safety of this mitigation, the kernel must ensure that the
+safe return sequence is itself free from attacker interference.  In Zen3
+and Zen4, this is accomplished by creating a BTB alias between the
+untraining function srso_untrain_ret_alias() and the safe return
+function srso_safe_ret_alias() which results in evicting a potentially
+poisoned BTB entry and using that safe one for all function returns.
+
+In older Zen1 and Zen2, this is accomplished using a reinterpretation
+technique similar to Retbleed one: srso_untrain_ret() and
+srso_safe_ret().

Documentation/admin-guide/kdump/vmcoreinfo.rst

@@ -624,3 +624,9 @@ Used to get the correct ranges:
   * VMALLOC_START ~ VMALLOC_END : vmalloc() / ioremap() space.
   * VMEMMAP_START ~ VMEMMAP_END : vmemmap space, used for struct page array.
   * KERNEL_LINK_ADDR : start address of Kernel link and BPF
+
+va_kernel_pa_offset
+-------------------
+
+Indicates the offset between the kernel virtual and physical mappings.
+Used to translate virtual to physical addresses.

Documentation/admin-guide/kernel-parameters.txt

@@ -1623,6 +1623,26 @@
 			Format: off | on
 			default: on
 
+	gather_data_sampling=
+			[X86,INTEL] Control the Gather Data Sampling (GDS)
+			mitigation.
+
+			Gather Data Sampling is a hardware vulnerability which
+			allows unprivileged speculative access to data which was
+			previously stored in vector registers.
+
+			This issue is mitigated by default in updated microcode.
+			The mitigation may have a performance impact but can be
+			disabled. On systems without the microcode mitigation
+			disabling AVX serves as a mitigation.
+
+			force:	Disable AVX to mitigate systems without
+				microcode mitigation. No effect if the microcode
+				mitigation is present. Known to cause crashes in
+				userspace with buggy AVX enumeration.
+
+			off:	Disable GDS mitigation.
+
 	gcov_persist=	[GCOV] When non-zero (default), profiling data for
 			kernel modules is saved and remains accessible via
 			debugfs, even when the module is unloaded/reloaded.
@@ -3273,24 +3293,25 @@
 				Disable all optional CPU mitigations.  This
 				improves system performance, but it may also
 				expose users to several CPU vulnerabilities.
-				Equivalent to: nopti [X86,PPC]
+				Equivalent to: if nokaslr then kpti=0 [ARM64]
-					       if nokaslr then kpti=0 [ARM64]
+					       gather_data_sampling=off [X86]
-					       nospectre_v1 [X86,PPC]
+					       kvm.nx_huge_pages=off [X86]
-					       nobp=0 [S390]
-					       nospectre_v2 [X86,PPC,S390,ARM64]
-					       spectre_v2_user=off [X86]
-					       spec_store_bypass_disable=off [X86,PPC]
-					       ssbd=force-off [ARM64]
-					       nospectre_bhb [ARM64]
 					       l1tf=off [X86]
 					       mds=off [X86]
-					       tsx_async_abort=off [X86]
+					       mmio_stale_data=off [X86]
-					       kvm.nx_huge_pages=off [X86]
-					       srbds=off [X86,INTEL]
 					       no_entry_flush [PPC]
 					       no_uaccess_flush [PPC]
-					       mmio_stale_data=off [X86]
+					       nobp=0 [S390]
+					       nopti [X86,PPC]
+					       nospectre_bhb [ARM64]
+					       nospectre_v1 [X86,PPC]
+					       nospectre_v2 [X86,PPC,S390,ARM64]
 					       retbleed=off [X86]
+					       spec_store_bypass_disable=off [X86,PPC]
+					       spectre_v2_user=off [X86]
+					       srbds=off [X86,INTEL]
+					       ssbd=force-off [ARM64]
+					       tsx_async_abort=off [X86]
 
 				Exceptions:
 					       This does not have any effect on
@@ -5875,6 +5896,17 @@
 			Not specifying this option is equivalent to
 			spectre_v2_user=auto.
 
+	spec_rstack_overflow=
+			[X86] Control RAS overflow mitigation on AMD Zen CPUs
+
+			off		- Disable mitigation
+			microcode	- Enable microcode mitigation only
+			safe-ret	- Enable sw-only safe RET mitigation (default)
+			ibpb		- Enable mitigation by issuing IBPB on
+					  kernel entry
+			ibpb-vmexit	- Issue IBPB only on VMEXIT
+					  (cloud-specific mitigation)
+
 	spec_store_bypass_disable=
 			[HW] Control Speculative Store Bypass (SSB) Disable mitigation
 			(Speculative Store Bypass vulnerability)

Documentation/devicetree/bindings/iio/addac/adi,ad74115.yaml

@@ -216,7 +216,6 @@ properties:
     description: Whether to enable burnout current for EXT1.
 
   adi,ext1-burnout-current-nanoamp:
-    $ref: /schemas/types.yaml#/definitions/uint32
     description:
       Burnout current in nanoamps to be applied to EXT1.
     enum: [0, 50, 500, 1000, 10000]
@@ -233,7 +232,6 @@ properties:
     description: Whether to enable burnout current for EXT2.
 
   adi,ext2-burnout-current-nanoamp:
-    $ref: /schemas/types.yaml#/definitions/uint32
     description: Burnout current in nanoamps to be applied to EXT2.
     enum: [0, 50, 500, 1000, 10000]
     default: 0
@@ -249,7 +247,6 @@ properties:
     description: Whether to enable burnout current for VIOUT.
 
   adi,viout-burnout-current-nanoamp:
-    $ref: /schemas/types.yaml#/definitions/uint32
     description: Burnout current in nanoamps to be applied to VIOUT.
     enum: [0, 1000, 10000]
     default: 0

Documentation/devicetree/bindings/net/mediatek,net.yaml

@@ -293,7 +293,7 @@ allOf:
 patternProperties:
   "^mac@[0-1]$":
     type: object
-    additionalProperties: false
+    unevaluatedProperties: false
     allOf:
       - $ref: ethernet-controller.yaml#
     description:
@@ -305,14 +305,9 @@ patternProperties:
       reg:
         maxItems: 1
 
-      phy-handle: true
-
-      phy-mode: true
-
     required:
       - reg
       - compatible
-      - phy-handle
 
 required:
   - compatible

Documentation/devicetree/bindings/net/rockchip-dwmac.yaml

@@ -91,12 +91,18 @@ properties:
     $ref: /schemas/types.yaml#/definitions/phandle
 
   tx_delay:
-    description: Delay value for TXD timing. Range value is 0~0x7F, 0x30 as default.
+    description: Delay value for TXD timing.
     $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 0x7F
+    default: 0x30
 
   rx_delay:
-    description: Delay value for RXD timing. Range value is 0~0x7F, 0x10 as default.
+    description: Delay value for RXD timing.
     $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 0x7F
+    default: 0x10
 
   phy-supply:
     description: PHY regulator

Documentation/devicetree/bindings/serial/atmel,at91-usart.yaml

@@ -16,13 +16,15 @@ properties:
       - enum:
           - atmel,at91rm9200-usart
           - atmel,at91sam9260-usart
-          - microchip,sam9x60-usart
       - items:
           - const: atmel,at91rm9200-dbgu
           - const: atmel,at91rm9200-usart
       - items:
           - const: atmel,at91sam9260-dbgu
           - const: atmel,at91sam9260-usart
+      - items:
+          - const: microchip,sam9x60-usart
+          - const: atmel,at91sam9260-usart
       - items:
           - const: microchip,sam9x60-dbgu
           - const: microchip,sam9x60-usart

Documentation/devicetree/bindings/sound/cirrus,cs42l43.yaml

@@ -0,0 +1,313 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/cirrus,cs42l43.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cirrus Logic CS42L43 Audio CODEC
+
+maintainers:
+  - patches@opensource.cirrus.com
+
+description: |
+  The CS42L43 is an audio CODEC with integrated MIPI SoundWire interface
+  (Version 1.2.1 compliant), I2C, SPI, and I2S/TDM interfaces designed
+  for portable applications. It provides a high dynamic range, stereo
+  DAC for headphone output, two integrated Class D amplifiers for
+  loudspeakers, and two ADCs for wired headset microphone input or
+  stereo line input. PDM inputs are provided for digital microphones.
+
+allOf:
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    enum:
+      - cirrus,cs42l43
+
+  reg:
+    maxItems: 1
+
+  vdd-p-supply:
+    description:
+      Power supply for the high voltage interface.
+
+  vdd-a-supply:
+    description:
+      Power supply for internal analog circuits.
+
+  vdd-d-supply:
+    description:
+      Power supply for internal digital circuits. Can be internally supplied.
+
+  vdd-io-supply:
+    description:
+      Power supply for external interface and internal digital logic.
+
+  vdd-cp-supply:
+    description:
+      Power supply for the amplifier 3 and 4 charge pump.
+
+  vdd-amp-supply:
+    description:
+      Power supply for amplifier 1 and 2.
+
+  reset-gpios:
+    maxItems: 1
+
+  interrupt-controller: true
+
+  "#interrupt-cells":
+    const: 2
+
+  interrupts:
+    maxItems: 1
+
+  "#sound-dai-cells":
+    const: 1
+
+  clocks:
+    items:
+      - description: Synchronous audio clock provided on mclk_in.
+
+  clock-names:
+    const: mclk
+
+  cirrus,bias-low:
+    type: boolean
+    description:
+      Select a 1.8V headset micbias rather than 2.8V.
+
+  cirrus,bias-sense-microamp:
+    description:
+      Current at which the headset micbias sense clamp will engage, 0 to
+      disable.
+    enum: [ 0, 14, 23, 41, 50, 60, 68, 86, 95 ]
+    default: 0
+
+  cirrus,bias-ramp-ms:
+    description:
+      Time in milliseconds the hardware allows for the headset micbias to
+      ramp up.
+    enum: [ 10, 40, 90, 170 ]
+    default: 170
+
+  cirrus,detect-us:
+    description:
+      Time in microseconds the type detection will run for. Long values will
+      cause more audible effects, but give more accurate detection.
+    enum: [ 20, 100, 1000, 10000, 50000, 75000, 100000, 200000 ]
+    default: 10000
+
+  cirrus,button-automute:
+    type: boolean
+    description:
+      Enable the hardware automuting of decimator 1 when a headset button is
+      pressed.
+
+  cirrus,buttons-ohms:
+    description:
+      Impedance in Ohms for each headset button, these should be listed in
+      ascending order.
+    minItems: 1
+    maxItems: 6
+
+  cirrus,tip-debounce-ms:
+    description:
+      Software debounce on tip sense triggering in milliseconds.
+    default: 0
+
+  cirrus,tip-invert:
+    type: boolean
+    description:
+      Indicates tip detect polarity, inverted implies open-circuit whilst the
+      jack is inserted.
+
+  cirrus,tip-disable-pullup:
+    type: boolean
+    description:
+      Indicates if the internal pullup on the tip detect should be disabled.
+
+  cirrus,tip-fall-db-ms:
+    description:
+      Time in milliseconds a falling edge on the tip detect should be hardware
+      debounced for. Note the falling edge is considered after the invert.
+    enum: [ 0, 125, 250, 500, 750, 1000, 1250, 1500 ]
+    default: 500
+
+  cirrus,tip-rise-db-ms:
+    description:
+      Time in milliseconds a rising edge on the tip detect should be hardware
+      debounced for. Note the rising edge is considered after the invert.
+    enum: [ 0, 125, 250, 500, 750, 1000, 1250, 1500 ]
+    default: 500
+
+  cirrus,use-ring-sense:
+    type: boolean
+    description:
+      Indicates if the ring sense should be used.
+
+  cirrus,ring-invert:
+    type: boolean
+    description:
+      Indicates ring detect polarity, inverted implies open-circuit whilst the
+      jack is inserted.
+
+  cirrus,ring-disable-pullup:
+    type: boolean
+    description:
+      Indicates if the internal pullup on the ring detect should be disabled.
+
+  cirrus,ring-fall-db-ms:
+    description:
+      Time in milliseconds a falling edge on the ring detect should be hardware
+      debounced for. Note the falling edge is considered after the invert.
+    enum: [ 0, 125, 250, 500, 750, 1000, 1250, 1500 ]
+    default: 500
+
+  cirrus,ring-rise-db-ms:
+    description:
+      Time in milliseconds a rising edge on the ring detect should be hardware
+      debounced for. Note the rising edge is considered after the invert.
+    enum: [ 0, 125, 250, 500, 750, 1000, 1250, 1500 ]
+    default: 500
+
+  pinctrl:
+    type: object
+    $ref: /schemas/pinctrl/pinctrl.yaml#
+    additionalProperties: false
+
+    properties:
+      gpio-controller: true
+
+      "#gpio-cells":
+        const: 2
+
+      gpio-ranges:
+        items:
+          - description: A phandle to the CODEC pinctrl node
+            minimum: 0
+          - const: 0
+          - const: 0
+          - const: 3
+
+    patternProperties:
+      "-state$":
+        oneOf:
+          - $ref: "#/$defs/cirrus-cs42l43-state"
+          - patternProperties:
+              "-pins$":
+                $ref: "#/$defs/cirrus-cs42l43-state"
+            additionalProperties: false
+
+  spi:
+    type: object
+    $ref: /schemas/spi/spi-controller.yaml#
+    unevaluatedProperties: false
+
+$defs:
+  cirrus-cs42l43-state:
+    type: object
+
+    allOf:
+      - $ref: /schemas/pinctrl/pincfg-node.yaml#
+      - $ref: /schemas/pinctrl/pinmux-node.yaml#
+
+    oneOf:
+      - required: [ groups ]
+      - required: [ pins ]
+
+    additionalProperties: false
+
+    properties:
+      groups:
+        enum: [ gpio1, gpio2, gpio3, asp, pdmout2, pdmout1, i2c, spi ]
+
+      pins:
+        enum: [ gpio1, gpio2, gpio3,
+                asp_dout, asp_fsync, asp_bclk,
+                pdmout2_clk, pdmout2_data, pdmout1_clk, pdmout1_data,
+                i2c_sda, i2c_scl,
+                spi_miso, spi_sck, spi_ssb ]
+
+      function:
+        enum: [ gpio, spdif, irq, mic-shutter, spk-shutter ]
+
+      drive-strength:
+        description: Set drive strength in mA
+        enum: [ 1, 2, 4, 8, 9, 10, 12, 16 ]
+
+      input-debounce:
+        description: Set input debounce in uS
+        enum: [ 0, 85 ]
+
+required:
+  - compatible
+  - reg
+  - vdd-p-supply
+  - vdd-a-supply
+  - vdd-io-supply
+  - vdd-cp-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        cs42l43: codec@1a {
+            compatible = "cirrus,cs42l43";
+            reg = <0x1a>;
+
+            vdd-p-supply = <&vdd5v0>;
+            vdd-a-supply = <&vdd1v8>;
+            vdd-io-supply = <&vdd1v8>;
+            vdd-cp-supply = <&vdd1v8>;
+            vdd-amp-supply = <&vdd5v0>;
+
+            reset-gpios = <&gpio 0>;
+
+            interrupt-controller;
+            #interrupt-cells = <2>;
+            interrupt-parent = <&gpio>;
+            interrupts = <56 IRQ_TYPE_LEVEL_LOW>;
+
+            #sound-dai-cells = <1>;
+
+            clocks = <&clks 0>;
+            clock-names = "mclk";
+
+            cs42l43_pins: pinctrl {
+                gpio-controller;
+                #gpio-cells = <2>;
+                gpio-ranges = <&cs42l43_pins 0 0 3>;
+
+                pinctrl-names = "default";
+                pinctrl-0 = <&pinsettings>;
+
+                pinsettings: default-state {
+                    shutter-pins {
+                        groups = "gpio3";
+                        function = "mic-shutter";
+                    };
+                };
+            };
+
+            spi {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                cs-gpios = <&cs42l43_pins 1 0>;
+
+                sensor@0 {
+                    compatible = "bosch,bme680";
+                    reg = <0>;
+                    spi-max-frequency = <1400000>;
+                };
+            };
+        };
+    };

Documentation/filesystems/locking.rst

@@ -551,9 +551,8 @@ mutex or just to use i_size_read() instead.
 Note: this does not protect the file->f_pos against concurrent modifications
 since this is something the userspace has to take care about.
 
-->iterate() is called with i_rwsem exclusive.
+->iterate_shared() is called with i_rwsem held for reading, and with the
-
+file f_pos_lock held exclusively
-->iterate_shared() is called with i_rwsem at least shared.
 
 ->fasync() is responsible for maintaining the FASYNC bit in filp->f_flags.
 Most instances call fasync_helper(), which does that maintenance, so it's

Documentation/filesystems/porting.rst

@@ -537,7 +537,7 @@ vfs_readdir() is gone; switch to iterate_dir() instead
 
 **mandatory**
 
-->readdir() is gone now; switch to ->iterate()
+->readdir() is gone now; switch to ->iterate_shared()
 
 **mandatory**
 
@@ -693,24 +693,19 @@ parallel now.
 
 ---
 
-**recommended**
+**mandatory**
 
-->iterate_shared() is added; it's a parallel variant of ->iterate().
+->iterate_shared() is added.
 Exclusion on struct file level is still provided (as well as that
 between it and lseek on the same struct file), but if your directory
 has been opened several times, you can get these called in parallel.
 Exclusion between that method and all directory-modifying ones is
 still provided, of course.
 
-Often enough ->iterate() can serve as ->iterate_shared() without any
+If you have any per-inode or per-dentry in-core data structures modified
-changes - it is a read-only operation, after all.  If you have any
+by ->iterate_shared(), you might need something to serialize the access
-per-inode or per-dentry in-core data structures modified by ->iterate(),
+to them.  If you do dcache pre-seeding, you'll need to switch to
-you might need something to serialize the access to them.  If you
+d_alloc_parallel() for that; look for in-tree examples.
-do dcache pre-seeding, you'll need to switch to d_alloc_parallel() for
-that; look for in-tree examples.
-
-Old method is only used if the new one is absent; eventually it will
-be removed.  Switch while you still can; the old one won't stay.
 
 ---
 
@@ -930,9 +925,9 @@ should be done by looking at FMODE_LSEEK in file->f_mode.
 filldir_t (readdir callbacks) calling conventions have changed.  Instead of
 returning 0 or -E... it returns bool now.  false means "no more" (as -E... used
 to) and true - "keep going" (as 0 in old calling conventions).  Rationale:
-callers never looked at specific -E... values anyway.  ->iterate() and
+callers never looked at specific -E... values anyway. -> iterate_shared()
-->iterate_shared() instance require no changes at all, all filldir_t ones in
+instances require no changes at all, all filldir_t ones in the tree
-the tree converted.
+converted.
 
 ---
 

MAINTAINERS

@@ -2339,7 +2339,7 @@ F:	drivers/phy/mediatek/
 ARM/MICROCHIP (ARM64) SoC support
 M:	Conor Dooley <conor@kernel.org>
 M:	Nicolas Ferre <nicolas.ferre@microchip.com>
-M:	Claudiu Beznea <claudiu.beznea@microchip.com>
+M:	Claudiu Beznea <claudiu.beznea@tuxon.dev>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Supported
 T:	git https://git.kernel.org/pub/scm/linux/kernel/git/at91/linux.git
@@ -2348,7 +2348,7 @@ F:	arch/arm64/boot/dts/microchip/
 ARM/Microchip (AT91) SoC support
 M:	Nicolas Ferre <nicolas.ferre@microchip.com>
 M:	Alexandre Belloni <alexandre.belloni@bootlin.com>
-M:	Claudiu Beznea <claudiu.beznea@microchip.com>
+M:	Claudiu Beznea <claudiu.beznea@tuxon.dev>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Supported
 W:	http://www.linux4sam.org
@@ -3250,7 +3250,7 @@ F:	include/uapi/linux/atm*
 
 ATMEL MACB ETHERNET DRIVER
 M:	Nicolas Ferre <nicolas.ferre@microchip.com>
-M:	Claudiu Beznea <claudiu.beznea@microchip.com>
+M:	Claudiu Beznea <claudiu.beznea@tuxon.dev>
 S:	Supported
 F:	drivers/net/ethernet/cadence/
 
@@ -3262,9 +3262,8 @@ F:	Documentation/devicetree/bindings/input/atmel,maxtouch.yaml
 F:	drivers/input/touchscreen/atmel_mxt_ts.c
 
 ATMEL WIRELESS DRIVER
-M:	Simon Kelley <simon@thekelleys.org.uk>
 L:	linux-wireless@vger.kernel.org
-S:	Maintained
+S:	Orphan
 W:	http://www.thekelleys.org.uk/atmel
 W:	http://atmelwlandriver.sourceforge.net/
 F:	drivers/net/wireless/atmel/atmel*
@@ -3394,7 +3393,7 @@ F:	drivers/media/radio/radio-aztech*
 B43 WIRELESS DRIVER
 L:	linux-wireless@vger.kernel.org
 L:	b43-dev@lists.infradead.org
-S:	Odd Fixes
+S:	Orphan
 W:	https://wireless.wiki.kernel.org/en/users/Drivers/b43
 F:	drivers/net/wireless/broadcom/b43/
 
@@ -4887,7 +4886,11 @@ L:	alsa-devel@alsa-project.org (moderated for non-subscribers)
 L:	patches@opensource.cirrus.com
 S:	Maintained
 F:	Documentation/devicetree/bindings/sound/cirrus,cs*
+F:	drivers/mfd/cs42l43*
+F:	drivers/pinctrl/cirrus/pinctrl-cs42l43*
+F:	drivers/spi/spi-cs42l43*
 F:	include/dt-bindings/sound/cs*
+F:	include/linux/mfd/cs42l43*
 F:	include/sound/cs*
 F:	sound/pci/hda/cs*
 F:	sound/pci/hda/hda_cs_dsp_ctl.*
@@ -5462,8 +5465,7 @@ F:	Documentation/devicetree/bindings/net/can/ctu,ctucanfd.yaml
 F:	drivers/net/can/ctucanfd/
 
 CW1200 WLAN driver
-M:	Solomon Peachy <pizza@shaftnet.org>
+S:	Orphan
-S:	Maintained
 F:	drivers/net/wireless/st/cw1200/
 
 CX18 VIDEO4LINUX DRIVER
@@ -9377,7 +9379,6 @@ F:	drivers/crypto/hisilicon/sgl.c
 F:	include/linux/hisi_acc_qm.h
 
 HISILICON ROCE DRIVER
-M:	Haoyue Xu <xuhaoyue1@hisilicon.com>
 M:	Junxian Huang <huangjunxian6@hisilicon.com>
 L:	linux-rdma@vger.kernel.org
 S:	Maintained
@@ -9662,6 +9663,7 @@ F:	tools/hv/
 
 HYPERBUS SUPPORT
 M:	Vignesh Raghavendra <vigneshr@ti.com>
+R:	Tudor Ambarus <tudor.ambarus@linaro.org>
 L:	linux-mtd@lists.infradead.org
 S:	Supported
 Q:	http://patchwork.ozlabs.org/project/linux-mtd/list/
@@ -12491,6 +12493,7 @@ F:	net/mctp/
 
 MAPLE TREE
 M:	Liam R. Howlett <Liam.Howlett@oracle.com>
+L:	maple-tree@lists.infradead.org
 L:	linux-mm@kvack.org
 S:	Supported
 F:	Documentation/core-api/maple_tree.rst
@@ -12602,18 +12605,14 @@ F:	Documentation/devicetree/bindings/net/marvell,pp2.yaml
 F:	drivers/net/ethernet/marvell/mvpp2/
 
 MARVELL MWIFIEX WIRELESS DRIVER
-M:	Amitkumar Karwar <amitkarwar@gmail.com>
+M:	Brian Norris <briannorris@chromium.org>
-M:	Ganapathi Bhat <ganapathi017@gmail.com>
-M:	Sharvari Harisangam <sharvari.harisangam@nxp.com>
-M:	Xinming Hu <huxinming820@gmail.com>
 L:	linux-wireless@vger.kernel.org
-S:	Maintained
+S:	Odd Fixes
 F:	drivers/net/wireless/marvell/mwifiex/
 
 MARVELL MWL8K WIRELESS DRIVER
-M:	Lennert Buytenhek <buytenh@wantstofly.org>
 L:	linux-wireless@vger.kernel.org
-S:	Odd Fixes
+S:	Orphan
 F:	drivers/net/wireless/marvell/mwl8k.c
 
 MARVELL NAND CONTROLLER DRIVER
@@ -13801,7 +13800,7 @@ F:	Documentation/devicetree/bindings/serial/atmel,at91-usart.yaml
 F:	drivers/spi/spi-at91-usart.c
 
 MICROCHIP AUDIO ASOC DRIVERS
-M:	Claudiu Beznea <claudiu.beznea@microchip.com>
+M:	Claudiu Beznea <claudiu.beznea@tuxon.dev>
 L:	alsa-devel@alsa-project.org (moderated for non-subscribers)
 S:	Supported
 F:	Documentation/devicetree/bindings/sound/atmel*
@@ -13824,7 +13823,7 @@ S:	Maintained
 F:	drivers/crypto/atmel-ecc.*
 
 MICROCHIP EIC DRIVER
-M:	Claudiu Beznea <claudiu.beznea@microchip.com>
+M:	Claudiu Beznea <claudiu.beznea@tuxon.dev>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Supported
 F:	Documentation/devicetree/bindings/interrupt-controller/microchip,sama7g5-eic.yaml
@@ -13897,7 +13896,7 @@ F:	drivers/video/fbdev/atmel_lcdfb.c
 F:	include/video/atmel_lcdc.h
 
 MICROCHIP MCP16502 PMIC DRIVER
-M:	Claudiu Beznea <claudiu.beznea@microchip.com>
+M:	Claudiu Beznea <claudiu.beznea@tuxon.dev>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Supported
 F:	Documentation/devicetree/bindings/regulator/mcp16502-regulator.txt
@@ -13924,7 +13923,7 @@ F:	Documentation/devicetree/bindings/mtd/atmel-nand.txt
 F:	drivers/mtd/nand/raw/atmel/*
 
 MICROCHIP OTPC DRIVER
-M:	Claudiu Beznea <claudiu.beznea@microchip.com>
+M:	Claudiu Beznea <claudiu.beznea@tuxon.dev>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Supported
 F:	Documentation/devicetree/bindings/nvmem/microchip,sama7g5-otpc.yaml
@@ -13963,7 +13962,7 @@ F:	Documentation/devicetree/bindings/fpga/microchip,mpf-spi-fpga-mgr.yaml
 F:	drivers/fpga/microchip-spi.c
 
 MICROCHIP PWM DRIVER
-M:	Claudiu Beznea <claudiu.beznea@microchip.com>
+M:	Claudiu Beznea <claudiu.beznea@tuxon.dev>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 L:	linux-pwm@vger.kernel.org
 S:	Supported
@@ -13979,7 +13978,7 @@ F:	drivers/iio/adc/at91-sama5d2_adc.c
 F:	include/dt-bindings/iio/adc/at91-sama5d2_adc.h
 
 MICROCHIP SAMA5D2-COMPATIBLE SHUTDOWN CONTROLLER
-M:	Claudiu Beznea <claudiu.beznea@microchip.com>
+M:	Claudiu Beznea <claudiu.beznea@tuxon.dev>
 S:	Supported
 F:	Documentation/devicetree/bindings/power/reset/atmel,sama5d2-shdwc.yaml
 F:	drivers/power/reset/at91-sama5d2_shdwc.c
@@ -13996,7 +13995,7 @@ S:	Supported
 F:	drivers/spi/spi-atmel.*
 
 MICROCHIP SSC DRIVER
-M:	Claudiu Beznea <claudiu.beznea@microchip.com>
+M:	Claudiu Beznea <claudiu.beznea@tuxon.dev>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Supported
 F:	Documentation/devicetree/bindings/misc/atmel-ssc.txt
@@ -14025,7 +14024,7 @@ F:	drivers/usb/gadget/udc/atmel_usba_udc.*
 
 MICROCHIP WILC1000 WIFI DRIVER
 M:	Ajay Singh <ajay.kathat@microchip.com>
-M:	Claudiu Beznea <claudiu.beznea@microchip.com>
+M:	Claudiu Beznea <claudiu.beznea@tuxon.dev>
 L:	linux-wireless@vger.kernel.org
 S:	Supported
 F:	drivers/net/wireless/microchip/wilc1000/
@@ -16308,6 +16307,7 @@ F:	drivers/pci/controller/dwc/pci-exynos.c
 PCI DRIVER FOR SYNOPSYS DESIGNWARE
 M:	Jingoo Han <jingoohan1@gmail.com>
 M:	Gustavo Pimentel <gustavo.pimentel@synopsys.com>
+M:	Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
 L:	linux-pci@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml
@@ -17459,6 +17459,7 @@ F:	drivers/media/tuners/qt1010*
 
 QUALCOMM ATH12K WIRELESS DRIVER
 M:	Kalle Valo <kvalo@kernel.org>
+M:	Jeff Johnson <quic_jjohnson@quicinc.com>
 L:	ath12k@lists.infradead.org
 S:	Supported
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git
@@ -17466,6 +17467,7 @@ F:	drivers/net/wireless/ath/ath12k/
 
 QUALCOMM ATHEROS ATH10K WIRELESS DRIVER
 M:	Kalle Valo <kvalo@kernel.org>
+M:	Jeff Johnson <quic_jjohnson@quicinc.com>
 L:	ath10k@lists.infradead.org
 S:	Supported
 W:	https://wireless.wiki.kernel.org/en/users/Drivers/ath10k
@@ -17475,6 +17477,7 @@ F:	drivers/net/wireless/ath/ath10k/
 
 QUALCOMM ATHEROS ATH11K WIRELESS DRIVER
 M:	Kalle Valo <kvalo@kernel.org>
+M:	Jeff Johnson <quic_jjohnson@quicinc.com>
 L:	ath11k@lists.infradead.org
 S:	Supported
 W:	https://wireless.wiki.kernel.org/en/users/Drivers/ath11k
@@ -17995,7 +17998,7 @@ T:	git git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-testing.g
 F:	drivers/net/wireless/realtek/rtlwifi/
 
 REALTEK WIRELESS DRIVER (rtw88)
-M:	Yan-Hsuan Chuang <tony0620emma@gmail.com>
+M:	Ping-Ke Shih <pkshih@realtek.com>
 L:	linux-wireless@vger.kernel.org
 S:	Maintained
 F:	drivers/net/wireless/realtek/rtw88/
@@ -18520,17 +18523,14 @@ RTL8180 WIRELESS DRIVER
 L:	linux-wireless@vger.kernel.org
 S:	Orphan
 W:	https://wireless.wiki.kernel.org/
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-testing.git
 F:	drivers/net/wireless/realtek/rtl818x/rtl8180/
 
 RTL8187 WIRELESS DRIVER
-M:	Herton Ronaldo Krzesinski <herton@canonical.com>
+M:	Hin-Tak Leung <hintak.leung@gmail.com>
-M:	Hin-Tak Leung <htl10@users.sourceforge.net>
 M:	Larry Finger <Larry.Finger@lwfinger.net>
 L:	linux-wireless@vger.kernel.org
 S:	Maintained
 W:	https://wireless.wiki.kernel.org/
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-testing.git
 F:	drivers/net/wireless/realtek/rtl818x/rtl8187/
 
 RTL8XXXU WIRELESS DRIVER (rtl8xxxu)
@@ -20414,7 +20414,6 @@ F:	drivers/pwm/pwm-stm32*
 F:	include/linux/*/stm32-*tim*
 
 STMMAC ETHERNET DRIVER
-M:	Giuseppe Cavallaro <peppe.cavallaro@st.com>
 M:	Alexandre Torgue <alexandre.torgue@foss.st.com>
 M:	Jose Abreu <joabreu@synopsys.com>
 L:	netdev@vger.kernel.org
@@ -21691,11 +21690,14 @@ S:	Orphan
 F:	drivers/net/ethernet/dec/tulip/
 
 TUN/TAP driver
-M:	Maxim Krasnyansky <maxk@qti.qualcomm.com>
+M:	Willem de Bruijn <willemdebruijn.kernel@gmail.com>
+M:	Jason Wang <jasowang@redhat.com>
 S:	Maintained
 W:	http://vtun.sourceforge.net/tun
 F:	Documentation/networking/tuntap.rst
 F:	arch/um/os-Linux/drivers/
+F:	drivers/net/tap.c
+F:	drivers/net/tun.c
 
 TURBOCHANNEL SUBSYSTEM
 M:	"Maciej W. Rozycki" <macro@orcam.me.uk>
@@ -21918,9 +21920,8 @@ S:	Maintained
 F:	drivers/usb/misc/apple-mfi-fastcharge.c
 
 USB AR5523 WIRELESS DRIVER
-M:	Pontus Fuchs <pontus.fuchs@gmail.com>
 L:	linux-wireless@vger.kernel.org
-S:	Maintained
+S:	Orphan
 F:	drivers/net/wireless/ath/ar5523/
 
 USB ATTACHED SCSI
@@ -22197,9 +22198,8 @@ F:	drivers/usb/gadget/legacy/webcam.c
 F:	include/uapi/linux/usb/g_uvc.h
 
 USB WIRELESS RNDIS DRIVER (rndis_wlan)
-M:	Jussi Kivilinna <jussi.kivilinna@iki.fi>
 L:	linux-wireless@vger.kernel.org
-S:	Maintained
+S:	Orphan
 F:	drivers/net/wireless/legacy/rndis_wlan.c
 
 USB XHCI DRIVER
@@ -22974,7 +22974,7 @@ F:	drivers/input/misc/wistron_btns.c
 
 WL3501 WIRELESS PCMCIA CARD DRIVER
 L:	linux-wireless@vger.kernel.org
-S:	Odd fixes
+S:	Orphan
 F:	drivers/net/wireless/legacy/wl3501*
 
 WMI BINARY MOF DRIVER
@@ -23545,11 +23545,8 @@ S:	Maintained
 F:	mm/zbud.c
 
 ZD1211RW WIRELESS DRIVER
-M:	Ulrich Kunitz <kune@deine-taler.de>
 L:	linux-wireless@vger.kernel.org
-L:	zd1211-devs@lists.sourceforge.net (subscribers-only)
+S:	Orphan
-S:	Maintained
-W:	http://zd1211.ath.cx/wiki/DriverRewrite
 F:	drivers/net/wireless/zydas/zd1211rw/
 
 ZD1301 MEDIA DRIVER

Makefile

@@ -2,7 +2,7 @@
 VERSION = 6
 PATCHLEVEL = 5
 SUBLEVEL = 0
-EXTRAVERSION = -rc4
+EXTRAVERSION = -rc6
 NAME = Hurr durr I'ma ninja sloth
 
 # *DOCUMENTATION*

arch/alpha/include/asm/processor.h

@@ -47,12 +47,6 @@ unsigned long __get_wchan(struct task_struct *p);
 
 #define ARCH_HAS_PREFETCH
 #define ARCH_HAS_PREFETCHW
-#define ARCH_HAS_SPINLOCK_PREFETCH
-
-#ifndef CONFIG_SMP
-/* Nothing to prefetch. */
-#define spin_lock_prefetch(lock)  	do { } while (0)
-#endif
 
 extern inline void prefetch(const void *ptr)  
 { 
@@ -64,11 +58,4 @@ extern inline void prefetchw(const void *ptr)
 	__builtin_prefetch(ptr, 1, 3);
 }
 
-#ifdef CONFIG_SMP
-extern inline void spin_lock_prefetch(const void *ptr)  
-{
-	__builtin_prefetch(ptr, 1, 3);
-}
-#endif
-
 #endif /* __ASM_ALPHA_PROCESSOR_H */

arch/alpha/kernel/setup.c

@@ -385,8 +385,7 @@ setup_memory(void *kernel_end)
 #endif /* CONFIG_BLK_DEV_INITRD */
 }
 
-int __init
+int page_is_ram(unsigned long pfn)
-page_is_ram(unsigned long pfn)
 {
 	struct memclust_struct * cluster;
 	struct memdesc_struct * memdesc;

arch/arm/boot/dts/microchip/sam9x60.dtsi

@@ -172,7 +172,7 @@
 				status = "disabled";
 
 				uart4: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <13 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -240,7 +240,7 @@
 				status = "disabled";
 
 				uart5: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					atmel,usart-mode = <AT91_USART_MODE_SERIAL>;
 					interrupts = <14 IRQ_TYPE_LEVEL_HIGH 7>;
@@ -370,7 +370,7 @@
 				status = "disabled";
 
 				uart11: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <32 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -419,7 +419,7 @@
 				status = "disabled";
 
 				uart12: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <33 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -576,7 +576,7 @@
 				status = "disabled";
 
 				uart6: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <9 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -625,7 +625,7 @@
 				status = "disabled";
 
 				uart7: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <10 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -674,7 +674,7 @@
 				status = "disabled";
 
 				uart8: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <11 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -723,7 +723,7 @@
 				status = "disabled";
 
 				uart0: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <5 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -791,7 +791,7 @@
 				status = "disabled";
 
 				uart1: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <6 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -859,7 +859,7 @@
 				status = "disabled";
 
 				uart2: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <7 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -927,7 +927,7 @@
 				status = "disabled";
 
 				uart3: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <8 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -1050,7 +1050,7 @@
 				status = "disabled";
 
 				uart9: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <15 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0
@@ -1099,7 +1099,7 @@
 				status = "disabled";
 
 				uart10: serial@200 {
-					compatible = "microchip,sam9x60-dbgu", "microchip,sam9x60-usart", "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
+					compatible = "microchip,sam9x60-usart", "atmel,at91sam9260-usart";
 					reg = <0x200 0x200>;
 					interrupts = <16 IRQ_TYPE_LEVEL_HIGH 7>;
 					dmas = <&dma0

arch/arm/boot/dts/nspire/nspire.dtsi

@@ -161,7 +161,7 @@
 			};
 
 			watchdog: watchdog@90060000 {
-				compatible = "arm,amba-primecell";
+				compatible = "arm,primecell";
 				reg = <0x90060000 0x1000>;
 				interrupts = <3>;
 			};

arch/arm/boot/dts/nxp/imx/imx53-sk-imx53.dts

@@ -60,6 +60,16 @@
 	status = "okay";
 };
 
+&cpu0 {
+	/* CPU rated to 800 MHz, not the default 1.2GHz. */
+	operating-points = <
+		/* kHz   uV */
+		166666  850000
+		400000  900000
+		800000  1050000
+	>;
+};
+
 &ecspi1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_ecspi1>;

arch/arm/boot/dts/nxp/imx/imx6sll.dtsi

@@ -552,7 +552,7 @@
 				reg = <0x020ca000 0x1000>;
 				interrupts = <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&clks IMX6SLL_CLK_USBPHY2>;
-				phy-reg_3p0-supply = <&reg_3p0>;
+				phy-3p0-supply = <&reg_3p0>;
 				fsl,anatop = <&anatop>;
 			};
 

arch/arm/mach-pxa/sharpsl_pm.h

@@ -105,5 +105,4 @@ void sharpsl_pm_led(int val);
 #define MAX1111_ACIN_VOLT   6u
 int sharpsl_pm_pxa_read_max1111(int channel);
 
-void corgi_lcd_limit_intensity(int limit);
 #endif

arch/arm/mach-pxa/spitz_pm.c

@@ -15,6 +15,7 @@
 #include <linux/interrupt.h>
 #include <linux/platform_device.h>
 #include <linux/apm-emulation.h>
+#include <linux/spi/corgi_lcd.h>
 
 #include <asm/irq.h>
 #include <asm/mach-types.h>

arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts

@@ -145,7 +145,7 @@
 	status = "okay";
 	clock-frequency = <100000>;
 	i2c-sda-falling-time-ns = <890>;  /* hcnt */
-	i2c-sdl-falling-time-ns = <890>;  /* lcnt */
+	i2c-scl-falling-time-ns = <890>;  /* lcnt */
 
 	pinctrl-names = "default", "gpio";
 	pinctrl-0 = <&i2c1_pmx_func>;

arch/arm64/boot/dts/altera/socfpga_stratix10_socdk_nand.dts

@@ -141,7 +141,7 @@
 	status = "okay";
 	clock-frequency = <100000>;
 	i2c-sda-falling-time-ns = <890>;  /* hcnt */
-	i2c-sdl-falling-time-ns = <890>;  /* lcnt */
+	i2c-scl-falling-time-ns = <890>;  /* lcnt */
 
 	adc@14 {
 		compatible = "lltc,ltc2497";

arch/arm64/boot/dts/arm/vexpress-v2m-rs1.dtsi

@@ -1 +0,0 @@
-../../../../arm/boot/dts/vexpress-v2m-rs1.dtsi

arch/arm64/boot/dts/freescale/imx8mm-phyboard-polis-rdk.dts

@@ -141,7 +141,7 @@
 };
 
 &gpio1 {
-	gpio-line-names = "nINT_ETHPHY", "LED_RED", "WDOG_INT", "X_RTC_INT",
+	gpio-line-names = "", "LED_RED", "WDOG_INT", "X_RTC_INT",
 		"", "", "", "RESET_ETHPHY",
 		"CAN_nINT", "CAN_EN", "nENABLE_FLATLINK", "",
 		"USB_OTG_VBUS_EN", "", "LED_GREEN", "LED_BLUE";

arch/arm64/boot/dts/freescale/imx8mm-phycore-som.dtsi

@@ -111,7 +111,7 @@
 };
 
 &gpio1 {
-	gpio-line-names = "nINT_ETHPHY", "", "WDOG_INT", "X_RTC_INT",
+	gpio-line-names = "", "", "WDOG_INT", "X_RTC_INT",
 		"", "", "", "RESET_ETHPHY",
 		"", "", "nENABLE_FLATLINK";
 };
@@ -210,7 +210,7 @@
 				};
 			};
 
-			reg_vdd_gpu: buck3 {
+			reg_vdd_vpu: buck3 {
 				regulator-always-on;
 				regulator-boot-on;
 				regulator-max-microvolt = <1000000>;

arch/arm64/boot/dts/freescale/imx8mm-venice-gw7903.dts

@@ -567,6 +567,10 @@
 	status = "okay";
 };
 
+&disp_blk_ctrl {
+	status = "disabled";
+};
+
 &pgc_mipi {
 	status = "disabled";
 };

arch/arm64/boot/dts/freescale/imx8mm-venice-gw7904.dts

@@ -628,6 +628,10 @@
 	status = "okay";
 };
 
+&disp_blk_ctrl {
+	status = "disabled";
+};
+
 &pgc_mipi {
 	status = "disabled";
 };

arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi

@@ -358,7 +358,7 @@
 			MX8MN_IOMUXC_ENET_RXC_ENET1_RGMII_RXC		0x91
 			MX8MN_IOMUXC_ENET_RX_CTL_ENET1_RGMII_RX_CTL	0x91
 			MX8MN_IOMUXC_ENET_TX_CTL_ENET1_RGMII_TX_CTL	0x1f
-			MX8MN_IOMUXC_GPIO1_IO09_GPIO1_IO9		0x19
+			MX8MN_IOMUXC_GPIO1_IO09_GPIO1_IO9		0x159
 		>;
 	};
 

arch/arm64/boot/dts/freescale/imx8mq.dtsi

@@ -772,7 +772,7 @@
 									 <&clk IMX8MQ_SYS1_PLL_800M>,
 									 <&clk IMX8MQ_VPU_PLL>;
 						assigned-clock-rates = <600000000>,
-								       <600000000>,
+								       <300000000>,
 								       <800000000>,
 								       <0>;
 					};

arch/arm64/boot/dts/renesas/r9a07g044.dtsi

@@ -223,20 +223,20 @@
 				     <GIC_SPI 212 IRQ_TYPE_EDGE_RISING>,
 				     <GIC_SPI 213 IRQ_TYPE_EDGE_RISING>;
 			interrupt-names = "tgia0", "tgib0", "tgic0", "tgid0",
-					  "tgiv0", "tgie0", "tgif0",
+					  "tciv0", "tgie0", "tgif0",
-					  "tgia1", "tgib1", "tgiv1", "tgiu1",
+					  "tgia1", "tgib1", "tciv1", "tciu1",
-					  "tgia2", "tgib2", "tgiv2", "tgiu2",
+					  "tgia2", "tgib2", "tciv2", "tciu2",
 					  "tgia3", "tgib3", "tgic3", "tgid3",
-					  "tgiv3",
+					  "tciv3",
 					  "tgia4", "tgib4", "tgic4", "tgid4",
-					  "tgiv4",
+					  "tciv4",
 					  "tgiu5", "tgiv5", "tgiw5",
 					  "tgia6", "tgib6", "tgic6", "tgid6",
-					  "tgiv6",
+					  "tciv6",
 					  "tgia7", "tgib7", "tgic7", "tgid7",
-					  "tgiv7",
+					  "tciv7",
 					  "tgia8", "tgib8", "tgic8", "tgid8",
-					  "tgiv8", "tgiu8";
+					  "tciv8", "tciu8";
 			clocks = <&cpg CPG_MOD R9A07G044_MTU_X_MCK_MTU3>;
 			power-domains = <&cpg>;
 			resets = <&cpg R9A07G044_MTU_X_PRESET_MTU3>;

arch/arm64/boot/dts/renesas/r9a07g054.dtsi

@@ -223,20 +223,20 @@
 				     <GIC_SPI 212 IRQ_TYPE_EDGE_RISING>,
 				     <GIC_SPI 213 IRQ_TYPE_EDGE_RISING>;
 			interrupt-names = "tgia0", "tgib0", "tgic0", "tgid0",
-					  "tgiv0", "tgie0", "tgif0",
+					  "tciv0", "tgie0", "tgif0",
-					  "tgia1", "tgib1", "tgiv1", "tgiu1",
+					  "tgia1", "tgib1", "tciv1", "tciu1",
-					  "tgia2", "tgib2", "tgiv2", "tgiu2",
+					  "tgia2", "tgib2", "tciv2", "tciu2",
 					  "tgia3", "tgib3", "tgic3", "tgid3",
-					  "tgiv3",
+					  "tciv3",
 					  "tgia4", "tgib4", "tgic4", "tgid4",
-					  "tgiv4",
+					  "tciv4",
 					  "tgiu5", "tgiv5", "tgiw5",
 					  "tgia6", "tgib6", "tgic6", "tgid6",
-					  "tgiv6",
+					  "tciv6",
 					  "tgia7", "tgib7", "tgic7", "tgid7",
-					  "tgiv7",
+					  "tciv7",
 					  "tgia8", "tgib8", "tgic8", "tgid8",
-					  "tgiv8", "tgiu8";
+					  "tciv8", "tciu8";
 			clocks = <&cpg CPG_MOD R9A07G054_MTU_X_MCK_MTU3>;
 			power-domains = <&cpg>;
 			resets = <&cpg R9A07G054_MTU_X_PRESET_MTU3>;

arch/arm64/include/asm/el2_setup.h

@@ -31,6 +31,13 @@
 .Lskip_hcrx_\@:
 .endm
 
+/* Check if running in host at EL2 mode, i.e., (h)VHE. Jump to fail if not. */
+.macro __check_hvhe fail, tmp
+	mrs	\tmp, hcr_el2
+	and	\tmp, \tmp, #HCR_E2H
+	cbz	\tmp, \fail
+.endm
+
 /*
  * Allow Non-secure EL1 and EL0 to access physical timer and counter.
  * This is not necessary for VHE, since the host kernel runs in EL2,
@@ -43,9 +50,7 @@
  */
 .macro __init_el2_timers
 	mov	x0, #3				// Enable EL1 physical timers
-	mrs	x1, hcr_el2
+	__check_hvhe .LnVHE_\@, x1
-	and	x1, x1, #HCR_E2H
-	cbz	x1, .LnVHE_\@
 	lsl	x0, x0, #10
 .LnVHE_\@:
 	msr	cnthctl_el2, x0
@@ -139,15 +144,14 @@
 
 /* Coprocessor traps */
 .macro __init_el2_cptr
-	mrs	x1, hcr_el2
+	__check_hvhe .LnVHE_\@, x1
-	and	x1, x1, #HCR_E2H
-	cbz	x1, .LnVHE_\@
 	mov	x0, #(CPACR_EL1_FPEN_EL1EN | CPACR_EL1_FPEN_EL0EN)
-	b	.Lset_cptr_\@
+	msr	cpacr_el1, x0
+	b	.Lskip_set_cptr_\@
 .LnVHE_\@:
 	mov	x0, #0x33ff
-.Lset_cptr_\@:
 	msr	cptr_el2, x0			// Disable copro. traps to EL2
+.Lskip_set_cptr_\@:
 .endm
 
 /* Disable any fine grained traps */
@@ -268,19 +272,19 @@
 	check_override id_aa64pfr0, ID_AA64PFR0_EL1_SVE_SHIFT, .Linit_sve_\@, .Lskip_sve_\@, x1, x2
 
 .Linit_sve_\@:	/* SVE register access */
-	mrs	x0, cptr_el2			// Disable SVE traps
+	__check_hvhe .Lcptr_nvhe_\@, x1
-	mrs	x1, hcr_el2
-	and	x1, x1, #HCR_E2H
-	cbz	x1, .Lcptr_nvhe_\@
 
-	// VHE case
+	// (h)VHE case
+	mrs	x0, cpacr_el1			// Disable SVE traps
 	orr	x0, x0, #(CPACR_EL1_ZEN_EL1EN | CPACR_EL1_ZEN_EL0EN)
-	b	.Lset_cptr_\@
+	msr	cpacr_el1, x0
+	b	.Lskip_set_cptr_\@
 
 .Lcptr_nvhe_\@: // nVHE case
+	mrs	x0, cptr_el2			// Disable SVE traps
 	bic	x0, x0, #CPTR_EL2_TZ
-.Lset_cptr_\@:
 	msr	cptr_el2, x0
+.Lskip_set_cptr_\@:
 	isb
 	mov	x1, #ZCR_ELx_LEN_MASK		// SVE: Enable full vector
 	msr_s	SYS_ZCR_EL2, x1			// length for EL1.
@@ -289,9 +293,19 @@
 	check_override id_aa64pfr1, ID_AA64PFR1_EL1_SME_SHIFT, .Linit_sme_\@, .Lskip_sme_\@, x1, x2
 
 .Linit_sme_\@:	/* SME register access and priority mapping */
+	__check_hvhe .Lcptr_nvhe_sme_\@, x1
+
+	// (h)VHE case
+	mrs	x0, cpacr_el1			// Disable SME traps
+	orr	x0, x0, #(CPACR_EL1_SMEN_EL0EN | CPACR_EL1_SMEN_EL1EN)
+	msr	cpacr_el1, x0
+	b	.Lskip_set_cptr_sme_\@
+
+.Lcptr_nvhe_sme_\@: // nVHE case
 	mrs	x0, cptr_el2			// Disable SME traps
 	bic	x0, x0, #CPTR_EL2_TSM
 	msr	cptr_el2, x0
+.Lskip_set_cptr_sme_\@:
 	isb
 
 	mrs	x1, sctlr_el2

arch/arm64/include/asm/kvm_asm.h

@@ -278,7 +278,7 @@ asmlinkage void __noreturn hyp_panic_bad_stack(void);
 asmlinkage void kvm_unexpected_el2_exception(void);
 struct kvm_cpu_context;
 void handle_trap(struct kvm_cpu_context *host_ctxt);
-asmlinkage void __noreturn kvm_host_psci_cpu_entry(bool is_cpu_on);
+asmlinkage void __noreturn __kvm_host_psci_cpu_entry(bool is_cpu_on);
 void __noreturn __pkvm_init_finalise(void);
 void kvm_nvhe_prepare_backtrace(unsigned long fp, unsigned long pc);
 void kvm_patch_vector_branch(struct alt_instr *alt,

arch/arm64/include/asm/kvm_emulate.h

@@ -571,6 +571,14 @@ static inline bool vcpu_has_feature(struct kvm_vcpu *vcpu, int feature)
 	return test_bit(feature, vcpu->arch.features);
 }
 
+static __always_inline void kvm_write_cptr_el2(u64 val)
+{
+	if (has_vhe() || has_hvhe())
+		write_sysreg(val, cpacr_el1);
+	else
+		write_sysreg(val, cptr_el2);
+}
+
 static __always_inline u64 kvm_get_reset_cptr_el2(struct kvm_vcpu *vcpu)
 {
 	u64 val;
@@ -578,8 +586,16 @@ static __always_inline u64 kvm_get_reset_cptr_el2(struct kvm_vcpu *vcpu)
 	if (has_vhe()) {
 		val = (CPACR_EL1_FPEN_EL0EN | CPACR_EL1_FPEN_EL1EN |
 		       CPACR_EL1_ZEN_EL1EN);
+		if (cpus_have_final_cap(ARM64_SME))
+			val |= CPACR_EL1_SMEN_EL1EN;
 	} else if (has_hvhe()) {
 		val = (CPACR_EL1_FPEN_EL0EN | CPACR_EL1_FPEN_EL1EN);
+
+		if (!vcpu_has_sve(vcpu) ||
+		    (vcpu->arch.fp_state != FP_STATE_GUEST_OWNED))
+			val |= CPACR_EL1_ZEN_EL1EN | CPACR_EL1_ZEN_EL0EN;
+		if (cpus_have_final_cap(ARM64_SME))
+			val |= CPACR_EL1_SMEN_EL1EN | CPACR_EL1_SMEN_EL0EN;
 	} else {
 		val = CPTR_NVHE_EL2_RES1;
 
@@ -597,9 +613,6 @@ static __always_inline void kvm_reset_cptr_el2(struct kvm_vcpu *vcpu)
 {
 	u64 val = kvm_get_reset_cptr_el2(vcpu);
 
-	if (has_vhe() || has_hvhe())
+	kvm_write_cptr_el2(val);
-		write_sysreg(val, cpacr_el1);
-	else
-		write_sysreg(val, cptr_el2);
 }
 #endif /* __ARM64_KVM_EMULATE_H__ */

arch/arm64/include/asm/processor.h

@@ -359,14 +359,6 @@ static inline void prefetchw(const void *ptr)
 	asm volatile("prfm pstl1keep, %a0\n" : : "p" (ptr));
 }
 
-#define ARCH_HAS_SPINLOCK_PREFETCH
-static inline void spin_lock_prefetch(const void *ptr)
-{
-	asm volatile(ARM64_LSE_ATOMIC_INSN(
-		     "prfm pstl1strm, %a0",
-		     "nop") : : "p" (ptr));
-}
-
 extern unsigned long __ro_after_init signal_minsigstksz; /* sigframe size */
 extern void __init minsigstksz_setup(void);
 

arch/arm64/kernel/fpsimd.c

@@ -679,7 +679,7 @@ static void fpsimd_to_sve(struct task_struct *task)
 	void *sst = task->thread.sve_state;
 	struct user_fpsimd_state const *fst = &task->thread.uw.fpsimd_state;
 
-	if (!system_supports_sve())
+	if (!system_supports_sve() && !system_supports_sme())
 		return;
 
 	vq = sve_vq_from_vl(thread_get_cur_vl(&task->thread));
@@ -705,7 +705,7 @@ static void sve_to_fpsimd(struct task_struct *task)
 	unsigned int i;
 	__uint128_t const *p;
 
-	if (!system_supports_sve())
+	if (!system_supports_sve() && !system_supports_sme())
 		return;
 
 	vl = thread_get_cur_vl(&task->thread);
@@ -835,7 +835,8 @@ void sve_sync_from_fpsimd_zeropad(struct task_struct *task)
 	void *sst = task->thread.sve_state;
 	struct user_fpsimd_state const *fst = &task->thread.uw.fpsimd_state;
 
-	if (!test_tsk_thread_flag(task, TIF_SVE))
+	if (!test_tsk_thread_flag(task, TIF_SVE) &&
+	    !thread_sm_enabled(&task->thread))
 		return;
 
 	vq = sve_vq_from_vl(thread_get_cur_vl(&task->thread));
@@ -909,7 +910,7 @@ int vec_set_vector_length(struct task_struct *task, enum vec_type type,
 			 */
 			task->thread.svcr &= ~(SVCR_SM_MASK |
 					       SVCR_ZA_MASK);
-			clear_thread_flag(TIF_SME);
+			clear_tsk_thread_flag(task, TIF_SME);
 			free_sme = true;
 		}
 	}

arch/arm64/kernel/ptrace.c

@@ -932,11 +932,13 @@ static int sve_set_common(struct task_struct *target,
 	/*
 	 * Ensure target->thread.sve_state is up to date with target's
 	 * FPSIMD regs, so that a short copyin leaves trailing
-	 * registers unmodified.  Always enable SVE even if going into
+	 * registers unmodified.  Only enable SVE if we are
-	 * streaming mode.
+	 * configuring normal SVE, a system with streaming SVE may not
+	 * have normal SVE.
 	 */
 	fpsimd_sync_to_sve(target);
-	set_tsk_thread_flag(target, TIF_SVE);
+	if (type == ARM64_VEC_SVE)
+		set_tsk_thread_flag(target, TIF_SVE);
 	target->thread.fp_type = FP_STATE_SVE;
 
 	BUILD_BUG_ON(SVE_PT_SVE_OFFSET != sizeof(header));
@@ -1180,6 +1182,8 @@ static int zt_set(struct task_struct *target,
 	if (ret == 0)
 		target->thread.svcr |= SVCR_ZA_MASK;
 
+	fpsimd_flush_task_state(target);
+
 	return ret;
 }
 

arch/arm64/kvm/arm.c

@@ -55,7 +55,7 @@ DECLARE_KVM_NVHE_PER_CPU(struct kvm_cpu_context, kvm_hyp_ctxt);
 
 static bool vgic_present, kvm_arm_initialised;
 
-static DEFINE_PER_CPU(unsigned char, kvm_arm_hardware_enabled);
+static DEFINE_PER_CPU(unsigned char, kvm_hyp_initialized);
 DEFINE_STATIC_KEY_FALSE(userspace_irqchip_in_use);
 
 bool is_kvm_arm_initialised(void)
@@ -1864,18 +1864,24 @@ static void cpu_hyp_reinit(void)
 	cpu_hyp_init_features();
 }
 
-static void _kvm_arch_hardware_enable(void *discard)
+static void cpu_hyp_init(void *discard)
 {
-	if (!__this_cpu_read(kvm_arm_hardware_enabled)) {
+	if (!__this_cpu_read(kvm_hyp_initialized)) {
 		cpu_hyp_reinit();
-		__this_cpu_write(kvm_arm_hardware_enabled, 1);
+		__this_cpu_write(kvm_hyp_initialized, 1);
+	}
+}
+
+static void cpu_hyp_uninit(void *discard)
+{
+	if (__this_cpu_read(kvm_hyp_initialized)) {
+		cpu_hyp_reset();
+		__this_cpu_write(kvm_hyp_initialized, 0);
 	}
 }
 
 int kvm_arch_hardware_enable(void)
 {
-	int was_enabled;
-
 	/*
 	 * Most calls to this function are made with migration
 	 * disabled, but not with preemption disabled. The former is
@@ -1884,36 +1890,23 @@ int kvm_arch_hardware_enable(void)
 	 */
 	preempt_disable();
 
-	was_enabled = __this_cpu_read(kvm_arm_hardware_enabled);
+	cpu_hyp_init(NULL);
-	_kvm_arch_hardware_enable(NULL);
 
-	if (!was_enabled) {
+	kvm_vgic_cpu_up();
-		kvm_vgic_cpu_up();
+	kvm_timer_cpu_up();
-		kvm_timer_cpu_up();
-	}
 
 	preempt_enable();
 
 	return 0;
 }
 
-static void _kvm_arch_hardware_disable(void *discard)
-{
-	if (__this_cpu_read(kvm_arm_hardware_enabled)) {
-		cpu_hyp_reset();
-		__this_cpu_write(kvm_arm_hardware_enabled, 0);
-	}
-}
-
 void kvm_arch_hardware_disable(void)
 {
-	if (__this_cpu_read(kvm_arm_hardware_enabled)) {
+	kvm_timer_cpu_down();
-		kvm_timer_cpu_down();
+	kvm_vgic_cpu_down();
-		kvm_vgic_cpu_down();
-	}
 
 	if (!is_protected_kvm_enabled())
-		_kvm_arch_hardware_disable(NULL);
+		cpu_hyp_uninit(NULL);
 }
 
 #ifdef CONFIG_CPU_PM
@@ -1922,16 +1915,16 @@ static int hyp_init_cpu_pm_notifier(struct notifier_block *self,
 				    void *v)
 {
 	/*
-	 * kvm_arm_hardware_enabled is left with its old value over
+	 * kvm_hyp_initialized is left with its old value over
 	 * PM_ENTER->PM_EXIT. It is used to indicate PM_EXIT should
 	 * re-enable hyp.
 	 */
 	switch (cmd) {
 	case CPU_PM_ENTER:
-		if (__this_cpu_read(kvm_arm_hardware_enabled))
+		if (__this_cpu_read(kvm_hyp_initialized))
 			/*
-			 * don't update kvm_arm_hardware_enabled here
+			 * don't update kvm_hyp_initialized here
-			 * so that the hardware will be re-enabled
+			 * so that the hyp will be re-enabled
 			 * when we resume. See below.
 			 */
 			cpu_hyp_reset();
@@ -1939,8 +1932,8 @@ static int hyp_init_cpu_pm_notifier(struct notifier_block *self,
 		return NOTIFY_OK;
 	case CPU_PM_ENTER_FAILED:
 	case CPU_PM_EXIT:
-		if (__this_cpu_read(kvm_arm_hardware_enabled))
+		if (__this_cpu_read(kvm_hyp_initialized))
-			/* The hardware was enabled before suspend. */
+			/* The hyp was enabled before suspend. */
 			cpu_hyp_reinit();
 
 		return NOTIFY_OK;
@@ -2021,7 +2014,7 @@ static int __init init_subsystems(void)
 	/*
 	 * Enable hardware so that subsystem initialisation can access EL2.
 	 */
-	on_each_cpu(_kvm_arch_hardware_enable, NULL, 1);
+	on_each_cpu(cpu_hyp_init, NULL, 1);
 
 	/*
 	 * Register CPU lower-power notifier
@@ -2059,7 +2052,7 @@ out:
 		hyp_cpu_pm_exit();
 
 	if (err || !is_protected_kvm_enabled())
-		on_each_cpu(_kvm_arch_hardware_disable, NULL, 1);
+		on_each_cpu(cpu_hyp_uninit, NULL, 1);
 
 	return err;
 }
@@ -2097,7 +2090,7 @@ static int __init do_pkvm_init(u32 hyp_va_bits)
 	 * The stub hypercalls are now disabled, so set our local flag to
 	 * prevent a later re-init attempt in kvm_arch_hardware_enable().
 	 */
-	__this_cpu_write(kvm_arm_hardware_enabled, 1);
+	__this_cpu_write(kvm_hyp_initialized, 1);
 	preempt_enable();
 
 	return ret;

arch/arm64/kvm/hyp/include/hyp/switch.h

@@ -457,6 +457,7 @@ static bool handle_ampere1_tcr(struct kvm_vcpu *vcpu)
 	 */
 	val &= ~(TCR_HD | TCR_HA);
 	write_sysreg_el1(val, SYS_TCR);
+	__kvm_skip_instr(vcpu);
 	return true;
 }
 

arch/arm64/kvm/hyp/nvhe/ffa.c

@@ -705,7 +705,20 @@ int hyp_ffa_init(void *pages)
 	if (res.a0 == FFA_RET_NOT_SUPPORTED)
 		return 0;
 
-	if (res.a0 != FFA_VERSION_1_0)
+	/*
+	 * Firmware returns the maximum supported version of the FF-A
+	 * implementation. Check that the returned version is
+	 * backwards-compatible with the hyp according to the rules in DEN0077A
+	 * v1.1 REL0 13.2.1.
+	 *
+	 * Of course, things are never simple when dealing with firmware. v1.1
+	 * broke ABI with v1.0 on several structures, which is itself
+	 * incompatible with the aforementioned versioning scheme. The
+	 * expectation is that v1.x implementations that do not support the v1.0
+	 * ABI return NOT_SUPPORTED rather than a version number, according to
+	 * DEN0077A v1.1 REL0 18.6.4.
+	 */
+	if (FFA_MAJOR_VERSION(res.a0) != 1)
 		return -EOPNOTSUPP;
 
 	arm_smccc_1_1_smc(FFA_ID_GET, 0, 0, 0, 0, 0, 0, 0, &res);

arch/arm64/kvm/hyp/nvhe/switch.c

@@ -63,7 +63,7 @@ static void __activate_traps(struct kvm_vcpu *vcpu)
 		__activate_traps_fpsimd32(vcpu);
 	}
 
-	write_sysreg(val, cptr_el2);
+	kvm_write_cptr_el2(val);
 	write_sysreg(__this_cpu_read(kvm_hyp_vector), vbar_el2);
 
 	if (cpus_have_final_cap(ARM64_WORKAROUND_SPECULATIVE_AT)) {

arch/ia64/include/asm/processor.h

@@ -634,7 +634,6 @@ ia64_imva (void *addr)
 
 #define ARCH_HAS_PREFETCH
 #define ARCH_HAS_PREFETCHW
-#define ARCH_HAS_SPINLOCK_PREFETCH
 #define PREFETCH_STRIDE			L1_CACHE_BYTES
 
 static inline void
@@ -649,8 +648,6 @@ prefetchw (const void *x)
 	ia64_lfetch_excl(ia64_lfhint_none, x);
 }
 
-#define spin_lock_prefetch(x)	prefetchw(x)
-
 extern unsigned long boot_option_idle_override;
 
 enum idle_boot_override {IDLE_NO_OVERRIDE=0, IDLE_HALT, IDLE_FORCE_MWAIT,

arch/mips/include/asm/mach-cavium-octeon/cpu-feature-overrides.h

@@ -58,8 +58,6 @@
 
 #define cpu_has_rixi		(cpu_data[0].cputype != CPU_CAVIUM_OCTEON)
 
-#define ARCH_HAS_SPINLOCK_PREFETCH 1
-#define spin_lock_prefetch(x) prefetch(x)
 #define PREFETCH_STRIDE 128
 
 #ifdef __OCTEON__

arch/parisc/Kconfig.debug

@@ -2,7 +2,7 @@
 #
 config LIGHTWEIGHT_SPINLOCK_CHECK
 	bool "Enable lightweight spinlock checks"
-	depends on SMP && !DEBUG_SPINLOCK
+	depends on DEBUG_KERNEL && SMP && !DEBUG_SPINLOCK
 	default y
 	help
 	  Add checks with low performance impact to the spinlock functions

arch/parisc/boot/compressed/misc.c

@@ -117,7 +117,7 @@ char *strchr(const char *s, int c)
 	return NULL;
 }
 
-int puts(const char *s)
+static int puts(const char *s)
 {
 	const char *nuline = s;
 
@@ -172,7 +172,7 @@ static int print_num(unsigned long num, int base)
 	return 0;
 }
 
-int printf(const char *fmt, ...)
+static int printf(const char *fmt, ...)
 {
 	va_list args;
 	int i = 0;
@@ -204,13 +204,13 @@ void abort(void)
 }
 
 #undef malloc
-void *malloc(size_t size)
+static void *malloc(size_t size)
 {
 	return malloc_gzip(size);
 }
 
 #undef free
-void free(void *ptr)
+static void free(void *ptr)
 {
 	return free_gzip(ptr);
 }
@@ -278,7 +278,7 @@ static void parse_elf(void *output)
 	free(phdrs);
 }
 
-unsigned long decompress_kernel(unsigned int started_wide,
+asmlinkage unsigned long __visible decompress_kernel(unsigned int started_wide,
 		unsigned int command_line,
 		const unsigned int rd_start,
 		const unsigned int rd_end)

arch/parisc/include/asm/dma.h

@@ -14,6 +14,8 @@
 #define dma_outb	outb
 #define dma_inb		inb
 
+extern unsigned long pcxl_dma_start;
+
 /*
 ** DMA_CHUNK_SIZE is used by the SCSI mid-layer to break up
 ** (or rather not merge) DMAs into manageable chunks.

arch/parisc/include/asm/ftrace.h

@@ -12,6 +12,10 @@ extern void mcount(void);
 extern unsigned long sys_call_table[];
 
 extern unsigned long return_address(unsigned int);
+struct ftrace_regs;
+extern void ftrace_function_trampoline(unsigned long parent,
+		unsigned long self_addr, unsigned long org_sp_gr3,
+		struct ftrace_regs *fregs);
 
 #ifdef CONFIG_DYNAMIC_FTRACE
 extern void ftrace_caller(void);

arch/parisc/include/asm/spinlock.h

@@ -7,8 +7,6 @@
 #include <asm/processor.h>
 #include <asm/spinlock_types.h>
 
-#define SPINLOCK_BREAK_INSN	0x0000c006	/* break 6,6 */
-
 static inline void arch_spin_val_check(int lock_val)
 {
 	if (IS_ENABLED(CONFIG_LIGHTWEIGHT_SPINLOCK_CHECK))

arch/parisc/include/asm/spinlock_types.h

@@ -4,6 +4,10 @@
 
 #define __ARCH_SPIN_LOCK_UNLOCKED_VAL	0x1a46
 
+#define SPINLOCK_BREAK_INSN	0x0000c006	/* break 6,6 */
+
+#ifndef __ASSEMBLY__
+
 typedef struct {
 #ifdef CONFIG_PA20
 	volatile unsigned int slock;
@@ -27,6 +31,8 @@ typedef struct {
 	volatile unsigned int	counter;
 } arch_rwlock_t;
 
+#endif /* __ASSEMBLY__ */
+
 #define __ARCH_RW_LOCK_UNLOCKED__       0x01000000
 #define __ARCH_RW_LOCK_UNLOCKED         { .lock_mutex = __ARCH_SPIN_LOCK_UNLOCKED, \
 					.counter = __ARCH_RW_LOCK_UNLOCKED__ }

arch/parisc/kernel/firmware.c

@@ -74,8 +74,8 @@
 static DEFINE_SPINLOCK(pdc_lock);
 #endif
 
-unsigned long pdc_result[NUM_PDC_RESULT]  __aligned(8);
+static unsigned long pdc_result[NUM_PDC_RESULT]  __aligned(8);
-unsigned long pdc_result2[NUM_PDC_RESULT] __aligned(8);
+static unsigned long pdc_result2[NUM_PDC_RESULT] __aligned(8);
 
 #ifdef CONFIG_64BIT
 #define WIDE_FIRMWARE 0x1
@@ -334,7 +334,7 @@ int __pdc_cpu_rendezvous(void)
 /**
  * pdc_cpu_rendezvous_lock - Lock PDC while transitioning to rendezvous state
  */
-void pdc_cpu_rendezvous_lock(void)
+void pdc_cpu_rendezvous_lock(void) __acquires(&pdc_lock)
 {
 	spin_lock(&pdc_lock);
 }
@@ -342,7 +342,7 @@ void pdc_cpu_rendezvous_lock(void)
 /**
  * pdc_cpu_rendezvous_unlock - Unlock PDC after reaching rendezvous state
  */
-void pdc_cpu_rendezvous_unlock(void)
+void pdc_cpu_rendezvous_unlock(void) __releases(&pdc_lock)
 {
 	spin_unlock(&pdc_lock);
 }

arch/parisc/kernel/ftrace.c

@@ -53,7 +53,7 @@ static void __hot prepare_ftrace_return(unsigned long *parent,
 
 static ftrace_func_t ftrace_func;
 
-void notrace __hot ftrace_function_trampoline(unsigned long parent,
+asmlinkage void notrace __hot ftrace_function_trampoline(unsigned long parent,
 				unsigned long self_addr,
 				unsigned long org_sp_gr3,
 				struct ftrace_regs *fregs)

arch/parisc/kernel/parisc_ksyms.c

@@ -14,6 +14,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/syscalls.h>
+#include <linux/libgcc.h>
 
 #include <linux/string.h>
 EXPORT_SYMBOL(memset);
@@ -92,12 +93,6 @@ EXPORT_SYMBOL($$divI_12);
 EXPORT_SYMBOL($$divI_14);
 EXPORT_SYMBOL($$divI_15);
 
-extern void __ashrdi3(void);
-extern void __ashldi3(void);
-extern void __lshrdi3(void);
-extern void __muldi3(void);
-extern void __ucmpdi2(void);
-
 EXPORT_SYMBOL(__ashrdi3);
 EXPORT_SYMBOL(__ashldi3);
 EXPORT_SYMBOL(__lshrdi3);

arch/parisc/kernel/pci-dma.c

@@ -39,7 +39,7 @@ static struct proc_dir_entry * proc_gsc_root __read_mostly = NULL;
 static unsigned long pcxl_used_bytes __read_mostly;
 static unsigned long pcxl_used_pages __read_mostly;
 
-extern unsigned long pcxl_dma_start; /* Start of pcxl dma mapping area */
+unsigned long pcxl_dma_start __ro_after_init; /* pcxl dma mapping area start */
 static DEFINE_SPINLOCK(pcxl_res_lock);
 static char    *pcxl_res_map;
 static int     pcxl_res_hint;
@@ -381,7 +381,7 @@ pcxl_dma_init(void)
 	pcxl_res_map = (char *)__get_free_pages(GFP_KERNEL,
 					    get_order(pcxl_res_size));
 	memset(pcxl_res_map, 0, pcxl_res_size);
-	proc_gsc_root = proc_mkdir("gsc", NULL);
+	proc_gsc_root = proc_mkdir("bus/gsc", NULL);
 	if (!proc_gsc_root)
     		printk(KERN_WARNING
 			"pcxl_dma_init: Unable to create gsc /proc dir entry\n");
@@ -417,14 +417,6 @@ void *arch_dma_alloc(struct device *dev, size_t size,
 	map_uncached_pages(vaddr, size, paddr);
 	*dma_handle = (dma_addr_t) paddr;
 
-#if 0
-/* This probably isn't needed to support EISA cards.
-** ISA cards will certainly only support 24-bit DMA addressing.
-** Not clear if we can, want, or need to support ISA.
-*/
-	if (!dev || *dev->coherent_dma_mask < 0xffffffff)
-		gfp |= GFP_DMA;
-#endif
 	return (void *)vaddr;
 }
 

arch/parisc/kernel/pdt.c

@@ -354,10 +354,8 @@ static int __init pdt_initcall(void)
 		return -ENODEV;
 
 	kpdtd_task = kthread_run(pdt_mainloop, NULL, "kpdtd");
-	if (IS_ERR(kpdtd_task))
-		return PTR_ERR(kpdtd_task);
 
-	return 0;
+	return PTR_ERR_OR_ZERO(kpdtd_task);
 }
 
 late_initcall(pdt_initcall);

arch/parisc/kernel/perf.c

@@ -57,7 +57,7 @@ struct rdr_tbl_ent {
 static int perf_processor_interface __read_mostly = UNKNOWN_INTF;
 static int perf_enabled __read_mostly;
 static DEFINE_SPINLOCK(perf_lock);
-struct parisc_device *cpu_device __read_mostly;
+static struct parisc_device *cpu_device __read_mostly;
 
 /* RDRs to write for PCX-W */
 static const int perf_rdrs_W[] =

arch/parisc/kernel/processor.c

@@ -26,6 +26,7 @@
 #include <asm/processor.h>
 #include <asm/page.h>
 #include <asm/pdc.h>
+#include <asm/smp.h>
 #include <asm/pdcpat.h>
 #include <asm/irq.h>		/* for struct irq_region */
 #include <asm/parisc-device.h>

arch/parisc/kernel/setup.c

@@ -40,11 +40,6 @@
 
 static char __initdata command_line[COMMAND_LINE_SIZE];
 
-/* Intended for ccio/sba/cpu statistics under /proc/bus/{runway|gsc} */
-struct proc_dir_entry * proc_runway_root __read_mostly = NULL;
-struct proc_dir_entry * proc_gsc_root __read_mostly = NULL;
-struct proc_dir_entry * proc_mckinley_root __read_mostly = NULL;
-
 static void __init setup_cmdline(char **cmdline_p)
 {
 	extern unsigned int boot_args[];
@@ -196,48 +191,6 @@ const struct seq_operations cpuinfo_op = {
 	.show	= show_cpuinfo
 };
 
-static void __init parisc_proc_mkdir(void)
-{
-	/*
-	** Can't call proc_mkdir() until after proc_root_init() has been
-	** called by start_kernel(). In other words, this code can't
-	** live in arch/.../setup.c because start_parisc() calls
-	** start_kernel().
-	*/
-	switch (boot_cpu_data.cpu_type) {
-	case pcxl:
-	case pcxl2:
-		if (NULL == proc_gsc_root)
-		{
-			proc_gsc_root = proc_mkdir("bus/gsc", NULL);
-		}
-		break;
-        case pcxt_:
-        case pcxu:
-        case pcxu_:
-        case pcxw:
-        case pcxw_:
-        case pcxw2:
-                if (NULL == proc_runway_root)
-                {
-                        proc_runway_root = proc_mkdir("bus/runway", NULL);
-                }
-                break;
-	case mako:
-	case mako2:
-                if (NULL == proc_mckinley_root)
-                {
-                        proc_mckinley_root = proc_mkdir("bus/mckinley", NULL);
-                }
-                break;
-	default:
-		/* FIXME: this was added to prevent the compiler 
-		 * complaining about missing pcx, pcxs and pcxt
-		 * I'm assuming they have neither gsc nor runway */
-		break;
-	}
-}
-
 static struct resource central_bus = {
 	.name	= "Central Bus",
 	.start	= F_EXTEND(0xfff80000),
@@ -294,7 +247,6 @@ static int __init parisc_init(void)
 {
 	u32 osid = (OS_ID_LINUX << 16);
 
-	parisc_proc_mkdir();
 	parisc_init_resources();
 	do_device_inventory();                  /* probe for hardware */
 

arch/parisc/kernel/signal.c

@@ -423,7 +423,7 @@ static void check_syscallno_in_delay_branch(struct pt_regs *regs)
 	regs->gr[31] -= 8; /* delayed branching */
 
 	/* Get assembler opcode of code in delay branch */
-	uaddr = (unsigned int *) ((regs->gr[31] & ~3) + 4);
+	uaddr = (u32 __user *) ((regs->gr[31] & ~3) + 4);
 	err = get_user(opcode, uaddr);
 	if (err)
 		return;

arch/parisc/kernel/sys_parisc.c

@@ -27,17 +27,12 @@
 #include <linux/elf-randomize.h>
 
 /*
- * Construct an artificial page offset for the mapping based on the virtual
+ * Construct an artificial page offset for the mapping based on the physical
  * address of the kernel file mapping variable.
- * If filp is zero the calculated pgoff value aliases the memory of the given
- * address. This is useful for io_uring where the mapping shall alias a kernel
- * address and a userspace adress where both the kernel and the userspace
- * access the same memory region.
  */
-#define GET_FILP_PGOFF(filp, addr)		\
+#define GET_FILP_PGOFF(filp)		\
-	((filp ? (((unsigned long) filp->f_mapping) >> 8)	\
+	(filp ? (((unsigned long) filp->f_mapping) >> 8)	\
-		 & ((SHM_COLOUR-1) >> PAGE_SHIFT) : 0UL)	\
+		 & ((SHM_COLOUR-1) >> PAGE_SHIFT) : 0UL)
-	  + (addr >> PAGE_SHIFT))
 
 static unsigned long shared_align_offset(unsigned long filp_pgoff,
 					 unsigned long pgoff)
@@ -117,7 +112,7 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp,
 	do_color_align = 0;
 	if (filp || (flags & MAP_SHARED))
 		do_color_align = 1;
-	filp_pgoff = GET_FILP_PGOFF(filp, addr);
+	filp_pgoff = GET_FILP_PGOFF(filp);
 
 	if (flags & MAP_FIXED) {
 		/* Even MAP_FIXED mappings must reside within TASK_SIZE */

arch/parisc/kernel/syscall.S

@@ -39,6 +39,7 @@ registers).
 #include <asm/assembly.h>
 #include <asm/processor.h>
 #include <asm/cache.h>
+#include <asm/spinlock_types.h>
 
 #include <linux/linkage.h>
 
@@ -66,6 +67,16 @@ registers).
 	stw	\reg1, 0(%sr2,\reg2)
 	.endm
 
+	/* raise exception if spinlock content is not zero or
+	 * __ARCH_SPIN_LOCK_UNLOCKED_VAL */
+	.macro	spinlock_check spin_val,tmpreg
+#ifdef CONFIG_LIGHTWEIGHT_SPINLOCK_CHECK
+	ldi	__ARCH_SPIN_LOCK_UNLOCKED_VAL, \tmpreg
+	andcm,=	\spin_val, \tmpreg, %r0
+	.word	SPINLOCK_BREAK_INSN
+#endif
+	.endm
+
 	.text
 
 	.import syscall_exit,code
@@ -508,7 +519,8 @@ lws_start:
 
 lws_exit_noerror:
 	lws_pagefault_enable	%r1,%r21
-	stw,ma	%r20, 0(%sr2,%r20)
+	ldi	__ARCH_SPIN_LOCK_UNLOCKED_VAL, %r21
+	stw,ma	%r21, 0(%sr2,%r20)
 	ssm	PSW_SM_I, %r0
 	b	lws_exit
 	copy	%r0, %r21
@@ -521,7 +533,8 @@ lws_wouldblock:
 
 lws_pagefault:
 	lws_pagefault_enable	%r1,%r21
-	stw,ma	%r20, 0(%sr2,%r20)
+	ldi	__ARCH_SPIN_LOCK_UNLOCKED_VAL, %r21
+	stw,ma	%r21, 0(%sr2,%r20)
 	ssm	PSW_SM_I, %r0
 	ldo	3(%r0),%r28
 	b	lws_exit
@@ -619,6 +632,7 @@ lws_compare_and_swap:
 
 	/* Try to acquire the lock */
 	LDCW	0(%sr2,%r20), %r28
+	spinlock_check	%r28, %r21
 	comclr,<>	%r0, %r28, %r0
 	b,n	lws_wouldblock
 
@@ -772,6 +786,7 @@ cas2_lock_start:
 
 	/* Try to acquire the lock */
 	LDCW	0(%sr2,%r20), %r28
+	spinlock_check	%r28, %r21
 	comclr,<>	%r0, %r28, %r0
 	b,n	lws_wouldblock
 
@@ -1001,6 +1016,7 @@ atomic_xchg_start:
 
 	/* Try to acquire the lock */
 	LDCW	0(%sr2,%r20), %r28
+	spinlock_check	%r28, %r21
 	comclr,<>	%r0, %r28, %r0
 	b,n	lws_wouldblock
 
@@ -1199,6 +1215,7 @@ atomic_store_start:
 
 	/* Try to acquire the lock */
 	LDCW	0(%sr2,%r20), %r28
+	spinlock_check	%r28, %r21
 	comclr,<>	%r0, %r28, %r0
 	b,n	lws_wouldblock
 
@@ -1330,7 +1347,7 @@ ENTRY(lws_lock_start)
 	/* lws locks */
 	.rept 256
 	/* Keep locks aligned at 16-bytes */
-	.word 1
+	.word __ARCH_SPIN_LOCK_UNLOCKED_VAL
 	.word 0 
 	.word 0
 	.word 0

arch/parisc/kernel/unaligned.c

@@ -11,6 +11,7 @@
 #include <linux/signal.h>
 #include <linux/ratelimit.h>
 #include <linux/uaccess.h>
+#include <linux/sysctl.h>
 #include <asm/unaligned.h>
 #include <asm/hardirq.h>
 #include <asm/traps.h>
@@ -337,7 +338,7 @@ static int emulate_std(struct pt_regs *regs, int frreg, int flop)
 	: "r19", "r20", "r21", "r22", "r1" );
 #else
     {
-	unsigned long valh=(val>>32),vall=(val&0xffffffffl);
+	unsigned long valh = (val >> 32), vall = (val & 0xffffffffl);
 	__asm__ __volatile__ (
 "	mtsp	%4, %%sr1\n"
 "	zdep	%2, 29, 2, %%r19\n"
@@ -473,7 +474,7 @@ void handle_unaligned(struct pt_regs *regs)
 	case OPCODE_LDWA_I:
 	case OPCODE_LDW_S:
 	case OPCODE_LDWA_S:
-		ret = emulate_ldw(regs, R3(regs->iir),0);
+		ret = emulate_ldw(regs, R3(regs->iir), 0);
 		break;
 
 	case OPCODE_STH:
@@ -482,7 +483,7 @@ void handle_unaligned(struct pt_regs *regs)
 
 	case OPCODE_STW:
 	case OPCODE_STWA:
-		ret = emulate_stw(regs, R2(regs->iir),0);
+		ret = emulate_stw(regs, R2(regs->iir), 0);
 		break;
 
 #ifdef CONFIG_64BIT
@@ -490,12 +491,12 @@ void handle_unaligned(struct pt_regs *regs)
 	case OPCODE_LDDA_I:
 	case OPCODE_LDD_S:
 	case OPCODE_LDDA_S:
-		ret = emulate_ldd(regs, R3(regs->iir),0);
+		ret = emulate_ldd(regs, R3(regs->iir), 0);
 		break;
 
 	case OPCODE_STD:
 	case OPCODE_STDA:
-		ret = emulate_std(regs, R2(regs->iir),0);
+		ret = emulate_std(regs, R2(regs->iir), 0);
 		break;
 #endif
 
@@ -503,24 +504,24 @@ void handle_unaligned(struct pt_regs *regs)
 	case OPCODE_FLDWS:
 	case OPCODE_FLDWXR:
 	case OPCODE_FLDWSR:
-		ret = emulate_ldw(regs,FR3(regs->iir),1);
+		ret = emulate_ldw(regs, FR3(regs->iir), 1);
 		break;
 
 	case OPCODE_FLDDX:
 	case OPCODE_FLDDS:
-		ret = emulate_ldd(regs,R3(regs->iir),1);
+		ret = emulate_ldd(regs, R3(regs->iir), 1);
 		break;
 
 	case OPCODE_FSTWX:
 	case OPCODE_FSTWS:
 	case OPCODE_FSTWXR:
 	case OPCODE_FSTWSR:
-		ret = emulate_stw(regs,FR3(regs->iir),1);
+		ret = emulate_stw(regs, FR3(regs->iir), 1);
 		break;
 
 	case OPCODE_FSTDX:
 	case OPCODE_FSTDS:
-		ret = emulate_std(regs,R3(regs->iir),1);
+		ret = emulate_std(regs, R3(regs->iir), 1);
 		break;
 
 	case OPCODE_LDCD_I:

arch/parisc/lib/ucmpdi2.c

@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <linux/module.h>
+#include <linux/libgcc.h>
 
 union ull_union {
 	unsigned long long ull;
@@ -9,7 +10,7 @@ union ull_union {
 	} ui;
 };
 
-int __ucmpdi2(unsigned long long a, unsigned long long b)
+word_type __ucmpdi2(unsigned long long a, unsigned long long b)
 {
 	union ull_union au = {.ull = a};
 	union ull_union bu = {.ull = b};

arch/parisc/mm/fault.c

@@ -192,31 +192,31 @@ int fixup_exception(struct pt_regs *regs)
  * For implementation see handle_interruption() in traps.c
  */
 static const char * const trap_description[] = {
-	[1] "High-priority machine check (HPMC)",
+	[1] =	"High-priority machine check (HPMC)",
-	[2] "Power failure interrupt",
+	[2] =	"Power failure interrupt",
-	[3] "Recovery counter trap",
+	[3] =	"Recovery counter trap",
-	[5] "Low-priority machine check",
+	[5] =	"Low-priority machine check",
-	[6] "Instruction TLB miss fault",
+	[6] =	"Instruction TLB miss fault",
-	[7] "Instruction access rights / protection trap",
+	[7] =	"Instruction access rights / protection trap",
-	[8] "Illegal instruction trap",
+	[8] =	"Illegal instruction trap",
-	[9] "Break instruction trap",
+	[9] =	"Break instruction trap",
-	[10] "Privileged operation trap",
+	[10] =	"Privileged operation trap",
-	[11] "Privileged register trap",
+	[11] =	"Privileged register trap",
-	[12] "Overflow trap",
+	[12] =	"Overflow trap",
-	[13] "Conditional trap",
+	[13] =	"Conditional trap",
-	[14] "FP Assist Exception trap",
+	[14] =	"FP Assist Exception trap",
-	[15] "Data TLB miss fault",
+	[15] =	"Data TLB miss fault",
-	[16] "Non-access ITLB miss fault",
+	[16] =	"Non-access ITLB miss fault",
-	[17] "Non-access DTLB miss fault",
+	[17] =	"Non-access DTLB miss fault",
-	[18] "Data memory protection/unaligned access trap",
+	[18] =	"Data memory protection/unaligned access trap",
-	[19] "Data memory break trap",
+	[19] =	"Data memory break trap",
-	[20] "TLB dirty bit trap",
+	[20] =	"TLB dirty bit trap",
-	[21] "Page reference trap",
+	[21] =	"Page reference trap",
-	[22] "Assist emulation trap",
+	[22] =	"Assist emulation trap",
-	[25] "Taken branch trap",
+	[25] =	"Taken branch trap",
-	[26] "Data memory access rights trap",
+	[26] =	"Data memory access rights trap",
-	[27] "Data memory protection ID trap",
+	[27] =	"Data memory protection ID trap",
-	[28] "Unaligned data reference trap",
+	[28] =	"Unaligned data reference trap",
 };
 
 const char *trap_name(unsigned long code)

arch/parisc/mm/fixmap.c

@@ -19,9 +19,6 @@ void notrace set_fixmap(enum fixed_addresses idx, phys_addr_t phys)
 	pmd_t *pmd = pmd_offset(pud, vaddr);
 	pte_t *pte;
 
-	if (pmd_none(*pmd))
-		pte = pte_alloc_kernel(pmd, vaddr);
-
 	pte = pte_offset_kernel(pmd, vaddr);
 	set_pte_at(&init_mm, vaddr, pte, __mk_pte(phys, PAGE_KERNEL_RWX));
 	flush_tlb_kernel_range(vaddr, vaddr + PAGE_SIZE);

arch/parisc/mm/init.c

@@ -523,10 +523,6 @@ void mark_rodata_ro(void)
 void *parisc_vmalloc_start __ro_after_init;
 EXPORT_SYMBOL(parisc_vmalloc_start);
 
-#ifdef CONFIG_PA11
-unsigned long pcxl_dma_start __ro_after_init;
-#endif
-
 void __init mem_init(void)
 {
 	/* Do sanity checks on IPC (compat) structures */
@@ -669,6 +665,39 @@ static void __init gateway_init(void)
 		  PAGE_SIZE, PAGE_GATEWAY, 1);
 }
 
+static void __init fixmap_init(void)
+{
+	unsigned long addr = FIXMAP_START;
+	unsigned long end = FIXMAP_START + FIXMAP_SIZE;
+	pgd_t *pgd = pgd_offset_k(addr);
+	p4d_t *p4d = p4d_offset(pgd, addr);
+	pud_t *pud = pud_offset(p4d, addr);
+	pmd_t *pmd;
+
+	BUILD_BUG_ON(FIXMAP_SIZE > PMD_SIZE);
+
+#if CONFIG_PGTABLE_LEVELS == 3
+	if (pud_none(*pud)) {
+		pmd = memblock_alloc(PAGE_SIZE << PMD_TABLE_ORDER,
+				     PAGE_SIZE << PMD_TABLE_ORDER);
+		if (!pmd)
+			panic("fixmap: pmd allocation failed.\n");
+		pud_populate(NULL, pud, pmd);
+	}
+#endif
+
+	pmd = pmd_offset(pud, addr);
+	do {
+		pte_t *pte = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
+		if (!pte)
+			panic("fixmap: pte allocation failed.\n");
+
+		pmd_populate_kernel(&init_mm, pmd, pte);
+
+		addr += PAGE_SIZE;
+	} while (addr < end);
+}
+
 static void __init parisc_bootmem_free(void)
 {
 	unsigned long max_zone_pfn[MAX_NR_ZONES] = { 0, };
@@ -683,6 +712,7 @@ void __init paging_init(void)
 	setup_bootmem();
 	pagetable_init();
 	gateway_init();
+	fixmap_init();
 	flush_cache_all_local(); /* start with known state */
 	flush_tlb_all_local(NULL);
 

arch/parisc/mm/ioremap.c

@@ -27,7 +27,7 @@
  */
 void __iomem *ioremap(unsigned long phys_addr, unsigned long size)
 {
-	void __iomem *addr;
+	uintptr_t addr;
 	struct vm_struct *area;
 	unsigned long offset, last_addr;
 	pgprot_t pgprot;
@@ -79,10 +79,9 @@ void __iomem *ioremap(unsigned long phys_addr, unsigned long size)
 	if (!area)
 		return NULL;
 
-	addr = (void __iomem *) area->addr;
+	addr = (uintptr_t) area->addr;
-	if (ioremap_page_range((unsigned long)addr, (unsigned long)addr + size,
+	if (ioremap_page_range(addr, addr + size, phys_addr, pgprot)) {
-			       phys_addr, pgprot)) {
+		vunmap(area->addr);
-		vunmap(addr);
 		return NULL;
 	}
 

arch/powerpc/include/asm/processor.h

@@ -393,7 +393,6 @@ int validate_sp_size(unsigned long sp, struct task_struct *p,
  */
 #define ARCH_HAS_PREFETCH
 #define ARCH_HAS_PREFETCHW
-#define ARCH_HAS_SPINLOCK_PREFETCH
 
 static inline void prefetch(const void *x)
 {
@@ -411,8 +410,6 @@ static inline void prefetchw(const void *x)
 	__asm__ __volatile__ ("dcbtst 0,%0" : : "r" (x));
 }
 
-#define spin_lock_prefetch(x)	prefetchw(x)
-
 /* asm stubs */
 extern unsigned long isa300_idle_stop_noloss(unsigned long psscr_val);
 extern unsigned long isa300_idle_stop_mayloss(unsigned long psscr_val);

arch/powerpc/include/asm/word-at-a-time.h

@@ -34,7 +34,7 @@ static inline long find_zero(unsigned long mask)
 	return leading_zero_bits >> 3;
 }
 
-static inline bool has_zero(unsigned long val, unsigned long *data, const struct word_at_a_time *c)
+static inline unsigned long has_zero(unsigned long val, unsigned long *data, const struct word_at_a_time *c)
 {
 	unsigned long rhs = val | c->low_bits;
 	*data = rhs;

arch/powerpc/kernel/head_64.S

@@ -375,8 +375,7 @@ _GLOBAL(generic_secondary_smp_init)
 	beq	20f
 
 	/* start the specified thread */
-	LOAD_REG_ADDR(r5, fsl_secondary_thread_init)
+	LOAD_REG_ADDR(r5, DOTSYM(fsl_secondary_thread_init))
-	ld	r4, 0(r5)
 	bl	book3e_start_thread
 
 	/* stop the current thread */

arch/powerpc/kernel/trace/ftrace_mprofile.S

@@ -33,6 +33,9 @@
  * and then arrange for the ftrace function to be called.
  */
 .macro	ftrace_regs_entry allregs
+	/* Create a minimal stack frame for representing B */
+	PPC_STLU	r1, -STACK_FRAME_MIN_SIZE(r1)
+
 	/* Create our stack frame + pt_regs */
 	PPC_STLU	r1,-SWITCH_FRAME_SIZE(r1)
 
@@ -42,7 +45,7 @@
 
 #ifdef CONFIG_PPC64
 	/* Save the original return address in A's stack frame */
-	std	r0, LRSAVE+SWITCH_FRAME_SIZE(r1)
+	std	r0, LRSAVE+SWITCH_FRAME_SIZE+STACK_FRAME_MIN_SIZE(r1)
 	/* Ok to continue? */
 	lbz	r3, PACA_FTRACE_ENABLED(r13)
 	cmpdi	r3, 0
@@ -77,6 +80,8 @@
 	mflr	r7
 	/* Save it as pt_regs->nip */
 	PPC_STL	r7, _NIP(r1)
+	/* Also save it in B's stackframe header for proper unwind */
+	PPC_STL	r7, LRSAVE+SWITCH_FRAME_SIZE(r1)
 	/* Save the read LR in pt_regs->link */
 	PPC_STL	r0, _LINK(r1)
 
@@ -142,7 +147,7 @@
 #endif
 
 	/* Pop our stack frame */
-	addi r1, r1, SWITCH_FRAME_SIZE
+	addi r1, r1, SWITCH_FRAME_SIZE+STACK_FRAME_MIN_SIZE
 
 #ifdef CONFIG_LIVEPATCH_64
         /* Based on the cmpd above, if the NIP was altered handle livepatch */

arch/powerpc/mm/init_64.c

@@ -314,8 +314,7 @@ void __ref vmemmap_free(unsigned long start, unsigned long end,
 	start = ALIGN_DOWN(start, page_size);
 	if (altmap) {
 		alt_start = altmap->base_pfn;
-		alt_end = altmap->base_pfn + altmap->reserve +
+		alt_end = altmap->base_pfn + altmap->reserve + altmap->free;
-			  altmap->free + altmap->alloc + altmap->align;
 	}
 
 	pr_debug("vmemmap_free %lx...%lx\n", start, end);

arch/powerpc/platforms/85xx/smp.c

@@ -180,7 +180,7 @@ static void wake_hw_thread(void *info)
 	unsigned long inia;
 	int cpu = *(const int *)info;
 
-	inia = *(unsigned long *)fsl_secondary_thread_init;
+	inia = ppc_function_entry(fsl_secondary_thread_init);
 	book3e_start_thread(cpu_thread_in_core(cpu), inia);
 }
 #endif

arch/powerpc/platforms/powermac/time.c

@@ -26,8 +26,8 @@
 #include <linux/rtc.h>
 #include <linux/of_address.h>
 
+#include <asm/early_ioremap.h>
 #include <asm/sections.h>
-#include <asm/io.h>
 #include <asm/machdep.h>
 #include <asm/time.h>
 #include <asm/nvram.h>
@@ -182,7 +182,7 @@ static int __init via_calibrate_decr(void)
 		return 0;
 	}
 	of_node_put(vias);
-	via = ioremap(rsrc.start, resource_size(&rsrc));
+	via = early_ioremap(rsrc.start, resource_size(&rsrc));
 	if (via == NULL) {
 		printk(KERN_ERR "Failed to map VIA for timer calibration !\n");
 		return 0;
@@ -207,7 +207,7 @@ static int __init via_calibrate_decr(void)
 
 	ppc_tb_freq = (dstart - dend) * 100 / 6;
 
-	iounmap(via);
+	early_iounmap((void *)via, resource_size(&rsrc));
 
 	return 1;
 }

arch/riscv/include/asm/acpi.h

@@ -19,7 +19,7 @@ typedef u64 phys_cpuid_t;
 #define PHYS_CPUID_INVALID INVALID_HARTID
 
 /* ACPI table mapping after acpi_permanent_mmap is set */
-void *acpi_os_ioremap(acpi_physical_address phys, acpi_size size);
+void __iomem *acpi_os_ioremap(acpi_physical_address phys, acpi_size size);
 #define acpi_os_ioremap acpi_os_ioremap
 
 #define acpi_strict 1	/* No out-of-spec workarounds on RISC-V */

arch/riscv/include/asm/cacheflush.h

@@ -37,6 +37,10 @@ static inline void flush_dcache_page(struct page *page)
 #define flush_icache_user_page(vma, pg, addr, len) \
 	flush_icache_mm(vma->vm_mm, 0)
 
+#ifdef CONFIG_64BIT
+#define flush_cache_vmap(start, end)	flush_tlb_kernel_range(start, end)
+#endif
+
 #ifndef CONFIG_SMP
 
 #define flush_icache_all() local_flush_icache_all()

arch/riscv/include/asm/mmio.h

@@ -101,9 +101,9 @@ static inline u64 __raw_readq(const volatile void __iomem *addr)
  * Relaxed I/O memory access primitives. These follow the Device memory
  * ordering rules but do not guarantee any ordering relative to Normal memory
  * accesses.  These are defined to order the indicated access (either a read or
- * write) with all other I/O memory accesses. Since the platform specification
+ * write) with all other I/O memory accesses to the same peripheral. Since the
- * defines that all I/O regions are strongly ordered on channel 2, no explicit
+ * platform specification defines that all I/O regions are strongly ordered on
- * fences are required to enforce this ordering.
+ * channel 0, no explicit fences are required to enforce this ordering.
  */
 /* FIXME: These are now the same as asm-generic */
 #define __io_rbr()		do {} while (0)
@@ -125,14 +125,14 @@ static inline u64 __raw_readq(const volatile void __iomem *addr)
 #endif
 
 /*
- * I/O memory access primitives. Reads are ordered relative to any
+ * I/O memory access primitives.  Reads are ordered relative to any following
- * following Normal memory access. Writes are ordered relative to any prior
+ * Normal memory read and delay() loop.  Writes are ordered relative to any
- * Normal memory access.  The memory barriers here are necessary as RISC-V
+ * prior Normal memory write.  The memory barriers here are necessary as RISC-V
  * doesn't define any ordering between the memory space and the I/O space.
  */
 #define __io_br()	do {} while (0)
-#define __io_ar(v)	__asm__ __volatile__ ("fence i,r" : : : "memory")
+#define __io_ar(v)	({ __asm__ __volatile__ ("fence i,ir" : : : "memory"); })
-#define __io_bw()	__asm__ __volatile__ ("fence w,o" : : : "memory")
+#define __io_bw()	({ __asm__ __volatile__ ("fence w,o" : : : "memory"); })
 #define __io_aw()	mmiowb_set_pending()
 
 #define readb(c)	({ u8  __v; __io_br(); __v = readb_cpu(c); __io_ar(__v); __v; })

arch/riscv/include/asm/pgtable.h

@@ -188,6 +188,8 @@ extern struct pt_alloc_ops pt_ops __initdata;
 #define PAGE_KERNEL_IO		__pgprot(_PAGE_IOREMAP)
 
 extern pgd_t swapper_pg_dir[];
+extern pgd_t trampoline_pg_dir[];
+extern pgd_t early_pg_dir[];
 
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
 static inline int pmd_present(pmd_t pmd)

arch/riscv/include/asm/vmalloc.h

@@ -3,12 +3,14 @@
 
 #ifdef CONFIG_HAVE_ARCH_HUGE_VMAP
 
+extern bool pgtable_l4_enabled, pgtable_l5_enabled;
+
 #define IOREMAP_MAX_ORDER (PUD_SHIFT)
 
 #define arch_vmap_pud_supported arch_vmap_pud_supported
 static inline bool arch_vmap_pud_supported(pgprot_t prot)
 {
-	return true;
+	return pgtable_l4_enabled || pgtable_l5_enabled;
 }
 
 #define arch_vmap_pmd_supported arch_vmap_pmd_supported

arch/riscv/kernel/acpi.c

@@ -215,9 +215,9 @@ void __init __acpi_unmap_table(void __iomem *map, unsigned long size)
 	early_iounmap(map, size);
 }
 
-void *acpi_os_ioremap(acpi_physical_address phys, acpi_size size)
+void __iomem *acpi_os_ioremap(acpi_physical_address phys, acpi_size size)
 {
-	return memremap(phys, size, MEMREMAP_WB);
+	return (void __iomem *)memremap(phys, size, MEMREMAP_WB);
 }
 
 #ifdef CONFIG_PCI

arch/riscv/kernel/cpu.c

@@ -17,6 +17,11 @@
 #include <asm/smp.h>
 #include <asm/pgtable.h>
 
+bool arch_match_cpu_phys_id(int cpu, u64 phys_id)
+{
+	return phys_id == cpuid_to_hartid_map(cpu);
+}
+
 /*
  * Returns the hart ID of the given device tree node, or -ENODEV if the node
  * isn't an enabled and valid RISC-V hart node.

arch/riscv/kernel/crash_core.c

@@ -18,4 +18,6 @@ void arch_crash_save_vmcoreinfo(void)
 	vmcoreinfo_append_str("NUMBER(MODULES_END)=0x%lx\n", MODULES_END);
 #endif
 	vmcoreinfo_append_str("NUMBER(KERNEL_LINK_ADDR)=0x%lx\n", KERNEL_LINK_ADDR);
+	vmcoreinfo_append_str("NUMBER(va_kernel_pa_offset)=0x%lx\n",
+						kernel_map.va_kernel_pa_offset);
 }

arch/riscv/kernel/elf_kexec.c

@@ -281,7 +281,7 @@ static void *elf_kexec_load(struct kimage *image, char *kernel_buf,
 		kbuf.buffer = initrd;
 		kbuf.bufsz = kbuf.memsz = initrd_len;
 		kbuf.buf_align = PAGE_SIZE;
-		kbuf.top_down = false;
+		kbuf.top_down = true;
 		kbuf.mem = KEXEC_BUF_MEM_UNKNOWN;
 		ret = kexec_add_buffer(&kbuf);
 		if (ret)
@@ -425,6 +425,7 @@ int arch_kexec_apply_relocations_add(struct purgatory_info *pi,
 		 * sym, instead of searching the whole relsec.
 		 */
 		case R_RISCV_PCREL_HI20:
+		case R_RISCV_CALL_PLT:
 		case R_RISCV_CALL:
 			*(u64 *)loc = CLEAN_IMM(UITYPE, *(u64 *)loc) |
 				 ENCODE_UJTYPE_IMM(val - addr);

arch/riscv/kernel/smp.c

@@ -61,11 +61,6 @@ int riscv_hartid_to_cpuid(unsigned long hartid)
 	return -ENOENT;
 }
 
-bool arch_match_cpu_phys_id(int cpu, u64 phys_id)
-{
-	return phys_id == cpuid_to_hartid_map(cpu);
-}
-
 static void ipi_stop(void)
 {
 	set_cpu_online(smp_processor_id(), false);

arch/riscv/mm/init.c

@@ -26,12 +26,13 @@
 #include <linux/kfence.h>
 
 #include <asm/fixmap.h>
-#include <asm/tlbflush.h>
+#include <asm/io.h>
+#include <asm/numa.h>
+#include <asm/pgtable.h>
+#include <asm/ptdump.h>
 #include <asm/sections.h>
 #include <asm/soc.h>
-#include <asm/io.h>
+#include <asm/tlbflush.h>
-#include <asm/ptdump.h>
-#include <asm/numa.h>
 
 #include "../kernel/head.h"
 
@@ -214,8 +215,13 @@ static void __init setup_bootmem(void)
 	memblock_reserve(vmlinux_start, vmlinux_end - vmlinux_start);
 
 	phys_ram_end = memblock_end_of_DRAM();
+
+	/*
+	 * Make sure we align the start of the memory on a PMD boundary so that
+	 * at worst, we map the linear mapping with PMD mappings.
+	 */
 	if (!IS_ENABLED(CONFIG_XIP_KERNEL))
-		phys_ram_base = memblock_start_of_DRAM();
+		phys_ram_base = memblock_start_of_DRAM() & PMD_MASK;
 
 	/*
 	 * In 64-bit, any use of __va/__pa before this point is wrong as we

arch/riscv/mm/kasan_init.c

@@ -22,7 +22,6 @@
  * region is not and then we have to go down to the PUD level.
  */
 
-extern pgd_t early_pg_dir[PTRS_PER_PGD];
 pgd_t tmp_pg_dir[PTRS_PER_PGD] __page_aligned_bss;
 p4d_t tmp_p4d[PTRS_PER_P4D] __page_aligned_bss;
 pud_t tmp_pud[PTRS_PER_PUD] __page_aligned_bss;

arch/s390/configs/debug_defconfig

@@ -116,7 +116,6 @@ CONFIG_UNIX=y
 CONFIG_UNIX_DIAG=m
 CONFIG_XFRM_USER=m
 CONFIG_NET_KEY=m
-CONFIG_NET_TC_SKB_EXT=y
 CONFIG_SMC=m
 CONFIG_SMC_DIAG=m
 CONFIG_INET=y
@@ -193,6 +192,7 @@ CONFIG_NFT_REJECT=m
 CONFIG_NFT_COMPAT=m
 CONFIG_NFT_HASH=m
 CONFIG_NFT_FIB_INET=m
+CONFIG_NETFILTER_XTABLES_COMPAT=y
 CONFIG_NETFILTER_XT_SET=m
 CONFIG_NETFILTER_XT_TARGET_AUDIT=m
 CONFIG_NETFILTER_XT_TARGET_CHECKSUM=m
@@ -379,6 +379,7 @@ CONFIG_NET_ACT_SIMP=m
 CONFIG_NET_ACT_SKBEDIT=m
 CONFIG_NET_ACT_CSUM=m
 CONFIG_NET_ACT_GATE=m
+CONFIG_NET_TC_SKB_EXT=y
 CONFIG_DNS_RESOLVER=y
 CONFIG_OPENVSWITCH=m
 CONFIG_VSOCKETS=m
@@ -395,6 +396,7 @@ CONFIG_HOTPLUG_PCI=y
 CONFIG_HOTPLUG_PCI_S390=y
 CONFIG_DEVTMPFS=y
 CONFIG_DEVTMPFS_SAFE=y
+# CONFIG_FW_LOADER is not set
 CONFIG_CONNECTOR=y
 CONFIG_ZRAM=y
 CONFIG_BLK_DEV_LOOP=m
@@ -502,7 +504,6 @@ CONFIG_NLMON=m
 # CONFIG_NET_VENDOR_GOOGLE is not set
 # CONFIG_NET_VENDOR_HUAWEI is not set
 # CONFIG_NET_VENDOR_INTEL is not set
-# CONFIG_NET_VENDOR_WANGXUN is not set
 # CONFIG_NET_VENDOR_LITEX is not set
 # CONFIG_NET_VENDOR_MARVELL is not set
 CONFIG_MLX4_EN=m
@@ -542,6 +543,7 @@ CONFIG_MLX5_CORE_EN=y
 # CONFIG_NET_VENDOR_TI is not set
 # CONFIG_NET_VENDOR_VERTEXCOM is not set
 # CONFIG_NET_VENDOR_VIA is not set
+# CONFIG_NET_VENDOR_WANGXUN is not set
 # CONFIG_NET_VENDOR_WIZNET is not set
 # CONFIG_NET_VENDOR_XILINX is not set
 CONFIG_PPP=m
@@ -646,7 +648,6 @@ CONFIG_TMPFS=y
 CONFIG_TMPFS_POSIX_ACL=y
 CONFIG_TMPFS_INODE64=y
 CONFIG_HUGETLBFS=y
-CONFIG_CONFIGFS_FS=m
 CONFIG_ECRYPT_FS=m
 CONFIG_CRAMFS=m
 CONFIG_SQUASHFS=m
@@ -690,7 +691,6 @@ CONFIG_HARDENED_USERCOPY=y
 CONFIG_FORTIFY_SOURCE=y
 CONFIG_SECURITY_SELINUX=y
 CONFIG_SECURITY_SELINUX_BOOTPARAM=y
-CONFIG_SECURITY_SELINUX_DISABLE=y
 CONFIG_SECURITY_LOCKDOWN_LSM=y
 CONFIG_SECURITY_LOCKDOWN_LSM_EARLY=y
 CONFIG_SECURITY_LANDLOCK=y
@@ -744,7 +744,6 @@ CONFIG_CRYPTO_MD4=m
 CONFIG_CRYPTO_MD5=y
 CONFIG_CRYPTO_MICHAEL_MIC=m
 CONFIG_CRYPTO_RMD160=m
-CONFIG_CRYPTO_SHA3=m
 CONFIG_CRYPTO_SM3_GENERIC=m
 CONFIG_CRYPTO_VMAC=m
 CONFIG_CRYPTO_WP512=m
@@ -844,6 +843,7 @@ CONFIG_PREEMPT_TRACER=y
 CONFIG_SCHED_TRACER=y
 CONFIG_FTRACE_SYSCALLS=y
 CONFIG_BLK_DEV_IO_TRACE=y
+CONFIG_USER_EVENTS=y
 CONFIG_HIST_TRIGGERS=y
 CONFIG_FTRACE_STARTUP_TEST=y
 # CONFIG_EVENT_TRACE_STARTUP_TEST is not set
@@ -866,6 +866,7 @@ CONFIG_FAIL_MAKE_REQUEST=y
 CONFIG_FAIL_IO_TIMEOUT=y
 CONFIG_FAIL_FUTEX=y
 CONFIG_FAULT_INJECTION_DEBUG_FS=y
+CONFIG_FAULT_INJECTION_CONFIGFS=y
 CONFIG_FAULT_INJECTION_STACKTRACE_FILTER=y
 CONFIG_LKDTM=m
 CONFIG_TEST_MIN_HEAP=y

arch/s390/configs/defconfig

@@ -107,7 +107,6 @@ CONFIG_UNIX=y
 CONFIG_UNIX_DIAG=m
 CONFIG_XFRM_USER=m
 CONFIG_NET_KEY=m
-CONFIG_NET_TC_SKB_EXT=y
 CONFIG_SMC=m
 CONFIG_SMC_DIAG=m
 CONFIG_INET=y
@@ -184,6 +183,7 @@ CONFIG_NFT_REJECT=m
 CONFIG_NFT_COMPAT=m
 CONFIG_NFT_HASH=m
 CONFIG_NFT_FIB_INET=m
+CONFIG_NETFILTER_XTABLES_COMPAT=y
 CONFIG_NETFILTER_XT_SET=m
 CONFIG_NETFILTER_XT_TARGET_AUDIT=m
 CONFIG_NETFILTER_XT_TARGET_CHECKSUM=m
@@ -369,6 +369,7 @@ CONFIG_NET_ACT_SIMP=m
 CONFIG_NET_ACT_SKBEDIT=m
 CONFIG_NET_ACT_CSUM=m
 CONFIG_NET_ACT_GATE=m
+CONFIG_NET_TC_SKB_EXT=y
 CONFIG_DNS_RESOLVER=y
 CONFIG_OPENVSWITCH=m
 CONFIG_VSOCKETS=m
@@ -385,6 +386,7 @@ CONFIG_HOTPLUG_PCI_S390=y
 CONFIG_UEVENT_HELPER=y
 CONFIG_DEVTMPFS=y
 CONFIG_DEVTMPFS_SAFE=y
+# CONFIG_FW_LOADER is not set
 CONFIG_CONNECTOR=y
 CONFIG_ZRAM=y
 CONFIG_BLK_DEV_LOOP=m
@@ -492,7 +494,6 @@ CONFIG_NLMON=m
 # CONFIG_NET_VENDOR_GOOGLE is not set
 # CONFIG_NET_VENDOR_HUAWEI is not set
 # CONFIG_NET_VENDOR_INTEL is not set
-# CONFIG_NET_VENDOR_WANGXUN is not set
 # CONFIG_NET_VENDOR_LITEX is not set
 # CONFIG_NET_VENDOR_MARVELL is not set
 CONFIG_MLX4_EN=m
@@ -532,6 +533,7 @@ CONFIG_MLX5_CORE_EN=y
 # CONFIG_NET_VENDOR_TI is not set
 # CONFIG_NET_VENDOR_VERTEXCOM is not set
 # CONFIG_NET_VENDOR_VIA is not set
+# CONFIG_NET_VENDOR_WANGXUN is not set
 # CONFIG_NET_VENDOR_WIZNET is not set
 # CONFIG_NET_VENDOR_XILINX is not set
 CONFIG_PPP=m
@@ -673,7 +675,6 @@ CONFIG_SECURITY=y
 CONFIG_SECURITY_NETWORK=y
 CONFIG_SECURITY_SELINUX=y
 CONFIG_SECURITY_SELINUX_BOOTPARAM=y
-CONFIG_SECURITY_SELINUX_DISABLE=y
 CONFIG_SECURITY_LOCKDOWN_LSM=y
 CONFIG_SECURITY_LOCKDOWN_LSM_EARLY=y
 CONFIG_SECURITY_LANDLOCK=y
@@ -729,7 +730,6 @@ CONFIG_CRYPTO_MD4=m
 CONFIG_CRYPTO_MD5=y
 CONFIG_CRYPTO_MICHAEL_MIC=m
 CONFIG_CRYPTO_RMD160=m
-CONFIG_CRYPTO_SHA3=m
 CONFIG_CRYPTO_SM3_GENERIC=m
 CONFIG_CRYPTO_VMAC=m
 CONFIG_CRYPTO_WP512=m
@@ -793,6 +793,7 @@ CONFIG_STACK_TRACER=y
 CONFIG_SCHED_TRACER=y
 CONFIG_FTRACE_SYSCALLS=y
 CONFIG_BLK_DEV_IO_TRACE=y
+CONFIG_USER_EVENTS=y
 CONFIG_HIST_TRIGGERS=y
 CONFIG_SAMPLES=y
 CONFIG_SAMPLE_TRACE_PRINTK=m

arch/s390/configs/zfcpdump_defconfig

@@ -53,7 +53,6 @@ CONFIG_ZFCP=y
 # CONFIG_HVC_IUCV is not set
 # CONFIG_HW_RANDOM_S390 is not set
 # CONFIG_HMC_DRV is not set
-# CONFIG_S390_UV_UAPI is not set
 # CONFIG_S390_TAPE is not set
 # CONFIG_VMCP is not set
 # CONFIG_MONWRITER is not set

arch/s390/include/uapi/asm/ptrace.h

@@ -8,6 +8,8 @@
 #ifndef _UAPI_S390_PTRACE_H
 #define _UAPI_S390_PTRACE_H
 
+#include <linux/const.h>
+
 /*
  * Offsets in the user_regs_struct. They are used for the ptrace
  * system call and in entry.S

arch/s390/kernel/sthyi.c

@@ -459,9 +459,9 @@ static int sthyi_update_cache(u64 *rc)
  *
  * Fills the destination with system information returned by the STHYI
  * instruction. The data is generated by emulation or execution of STHYI,
- * if available. The return value is the condition code that would be
+ * if available. The return value is either a negative error value or
- * returned, the rc parameter is the return code which is passed in
+ * the condition code that would be returned, the rc parameter is the
- * register R2 + 1.
+ * return code which is passed in register R2 + 1.
  */
 int sthyi_fill(void *dst, u64 *rc)
 {

arch/s390/kvm/intercept.c

@@ -389,8 +389,8 @@ static int handle_partial_execution(struct kvm_vcpu *vcpu)
  */
 int handle_sthyi(struct kvm_vcpu *vcpu)
 {
-	int reg1, reg2, r = 0;
+	int reg1, reg2, cc = 0, r = 0;
-	u64 code, addr, cc = 0, rc = 0;
+	u64 code, addr, rc = 0;
 	struct sthyi_sctns *sctns = NULL;
 
 	if (!test_kvm_facility(vcpu->kvm, 74))
@@ -421,7 +421,10 @@ int handle_sthyi(struct kvm_vcpu *vcpu)
 		return -ENOMEM;
 
 	cc = sthyi_fill(sctns, &rc);
-
+	if (cc < 0) {
+		free_page((unsigned long)sctns);
+		return cc;
+	}
 out:
 	if (!cc) {
 		if (kvm_s390_pv_cpu_is_protected(vcpu)) {

arch/s390/mm/vmem.c

@@ -763,6 +763,8 @@ void __init vmem_map_init(void)
 	if (static_key_enabled(&cpu_has_bear))
 		set_memory_nx(0, 1);
 	set_memory_nx(PAGE_SIZE, 1);
+	if (debug_pagealloc_enabled())
+		set_memory_4k(0, ident_map_size >> PAGE_SHIFT);
 
 	pr_info("Write protected kernel read-only data: %luk\n",
 		(unsigned long)(__end_rodata - _stext) >> 10);

arch/sparc/include/asm/processor_64.h

@@ -213,7 +213,6 @@ unsigned long __get_wchan(struct task_struct *task);
  */
 #define ARCH_HAS_PREFETCH
 #define ARCH_HAS_PREFETCHW
-#define ARCH_HAS_SPINLOCK_PREFETCH
 
 static inline void prefetch(const void *x)
 {
@@ -239,8 +238,6 @@ static inline void prefetchw(const void *x)
 			     : "r" (x));
 }
 
-#define spin_lock_prefetch(x)	prefetchw(x)
-
 #define HAVE_ARCH_PICK_MMAP_LAYOUT
 
 int do_mathemu(struct pt_regs *regs, struct fpustate *f, bool illegal_insn_trap);

arch/x86/Kconfig

@@ -2593,6 +2593,13 @@ config CPU_IBRS_ENTRY
 	  This mitigates both spectre_v2 and retbleed at great cost to
 	  performance.
 
+config CPU_SRSO
+	bool "Mitigate speculative RAS overflow on AMD"
+	depends on CPU_SUP_AMD && X86_64 && RETHUNK
+	default y
+	help
+	  Enable the SRSO mitigation needed on AMD Zen1-4 machines.
+
 config SLS
 	bool "Mitigate Straight-Line-Speculation"
 	depends on CC_HAS_SLS && X86_64
@@ -2603,6 +2610,25 @@ config SLS
 	  against straight line speculation. The kernel image might be slightly
 	  larger.
 
+config GDS_FORCE_MITIGATION
+	bool "Force GDS Mitigation"
+	depends on CPU_SUP_INTEL
+	default n
+	help
+	  Gather Data Sampling (GDS) is a hardware vulnerability which allows
+	  unprivileged speculative access to data which was previously stored in
+	  vector registers.
+
+	  This option is equivalent to setting gather_data_sampling=force on the
+	  command line. The microcode mitigation is used if present, otherwise
+	  AVX is disabled as a mitigation. On affected systems that are missing
+	  the microcode any userspace code that unconditionally uses AVX will
+	  break with this option set.
+
+	  Setting this option on systems not vulnerable to GDS has no effect.
+
+	  If in doubt, say N.
+
 endif
 
 config ARCH_HAS_ADD_PAGES