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Merge branch 'for-5.4/apple' into for-linus 

- stuck 'fn' key fix for hid-apple from Joao Moreno

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Jiri Kosina 2019-09-22 22:29:00 +02:00
parent e6d64ce06c aec256d0ec
commit 53c7164127
770 changed files with 7348 additions and 4275 deletions
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29
Documentation/admin-guide/sysctl/net.rst
View File

@ -39,7 +39,6 @@ Table : Subdirectories in /proc/sys/net
802 E802 protocol ax25 AX25
ethernet Ethernet protocol rose X.25 PLP layer
ipv4 IP version 4 x25 X.25 protocol
ipx IPX token-ring IBM token ring
bridge Bridging decnet DEC net
ipv6 IP version 6 tipc TIPC
========= =================== = ========== ==================
@ -401,33 +400,7 @@ interface.
(network) that the route leads to, the router (may be directly connected), the
route flags, and the device the route is using.
5. IPX
------
The IPX protocol has no tunable values in proc/sys/net.
The IPX protocol does, however, provide proc/net/ipx. This lists each IPX
socket giving the local and remote addresses in Novell format (that is
network:node:port). In accordance with the strange Novell tradition,
everything but the port is in hex. Not_Connected is displayed for sockets that
are not tied to a specific remote address. The Tx and Rx queue sizes indicate
the number of bytes pending for transmission and reception. The state
indicates the state the socket is in and the uid is the owning uid of the
socket.
The /proc/net/ipx_interface file lists all IPX interfaces. For each interface
it gives the network number, the node number, and indicates if the network is
the primary network. It also indicates which device it is bound to (or
Internal for internal networks) and the Frame Type if appropriate. Linux
supports 802.3, 802.2, 802.2 SNAP and DIX (Blue Book) ethernet framing for
IPX.
The /proc/net/ipx_route table holds a list of IPX routes. For each route it
gives the destination network, the router node (or Directly) and the network
address of the router (or Connected) for internal networks.
6. TIPC
5. TIPC
-------
tipc_rmem

4
Documentation/devicetree/bindings/Makefile
View File

@ -19,7 +19,9 @@ quiet_cmd_mk_schema = SCHEMA $@
DT_DOCS = $(shell \
cd $(srctree)/$(src) && \
find * \( -name '*.yaml' ! -name $(DT_TMP_SCHEMA) \) \
find * \( -name '*.yaml' ! \
-name $(DT_TMP_SCHEMA) ! \
-name '*.example.dt.yaml' \) \
)
DT_SCHEMA_FILES ?= $(addprefix $(src)/,$(DT_DOCS))

30
Documentation/devicetree/bindings/net/fsl-fec.txt
View File

@ -7,18 +7,6 @@ Required properties:
- phy-mode : See ethernet.txt file in the same directory
Optional properties:
- phy-reset-gpios : Should specify the gpio for phy reset
- phy-reset-duration : Reset duration in milliseconds. Should present
only if property "phy-reset-gpios" is available. Missing the property
will have the duration be 1 millisecond. Numbers greater than 1000 are
invalid and 1 millisecond will be used instead.
- phy-reset-active-high : If present then the reset sequence using the GPIO
specified in the "phy-reset-gpios" property is reversed (H=reset state,
L=operation state).
- phy-reset-post-delay : Post reset delay in milliseconds. If present then
a delay of phy-reset-post-delay milliseconds will be observed after the
phy-reset-gpios has been toggled. Can be omitted thus no delay is
observed. Delay is in range of 1ms to 1000ms. Other delays are invalid.
- phy-supply : regulator that powers the Ethernet PHY.
- phy-handle : phandle to the PHY device connected to this device.
- fixed-link : Assume a fixed link. See fixed-link.txt in the same directory.
@ -47,11 +35,27 @@ Optional properties:
For imx6sx, "int0" handles all 3 queues and ENET_MII. "pps" is for the pulse
per second interrupt associated with 1588 precision time protocol(PTP).
Optional subnodes:
- mdio : specifies the mdio bus in the FEC, used as a container for phy nodes
according to phy.txt in the same directory
Deprecated optional properties:
To avoid these, create a phy node according to phy.txt in the same
directory, and point the fec's "phy-handle" property to it. Then use
the phy's reset binding, again described by phy.txt.
- phy-reset-gpios : Should specify the gpio for phy reset
- phy-reset-duration : Reset duration in milliseconds. Should present
only if property "phy-reset-gpios" is available. Missing the property
will have the duration be 1 millisecond. Numbers greater than 1000 are
invalid and 1 millisecond will be used instead.
- phy-reset-active-high : If present then the reset sequence using the GPIO
specified in the "phy-reset-gpios" property is reversed (H=reset state,
L=operation state).
- phy-reset-post-delay : Post reset delay in milliseconds. If present then
a delay of phy-reset-post-delay milliseconds will be observed after the
phy-reset-gpios has been toggled. Can be omitted thus no delay is
observed. Delay is in range of 1ms to 1000ms. Other delays are invalid.
Example:
ethernet@83fec000 {

3
Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.yaml
View File

@ -37,7 +37,8 @@ properties:
hwlocks: true
st,syscfg:
$ref: "/schemas/types.yaml#/definitions/phandle-array"
allOf:
- $ref: "/schemas/types.yaml#/definitions/phandle-array"
description: Should be phandle/offset/mask
items:
- description: Phandle to the syscon node which includes IRQ mux selection.

162
Documentation/devicetree/bindings/riscv/cpus.txt
View File

@ -1,162 +0,0 @@
===================
RISC-V CPU Bindings
===================
The device tree allows to describe the layout of CPUs in a system through
the "cpus" node, which in turn contains a number of subnodes (ie "cpu")
defining properties for every cpu.
Bindings for CPU nodes follow the Devicetree Specification, available from:
https://www.devicetree.org/specifications/
with updates for 32-bit and 64-bit RISC-V systems provided in this document.
===========
Terminology
===========
This document uses some terminology common to the RISC-V community that is not
widely used, the definitions of which are listed here:
* hart: A hardware execution context, which contains all the state mandated by
the RISC-V ISA: a PC and some registers. This terminology is designed to
disambiguate software's view of execution contexts from any particular
microarchitectural implementation strategy. For example, my Intel laptop is
described as having one socket with two cores, each of which has two hyper
threads. Therefore this system has four harts.
=====================================
cpus and cpu node bindings definition
=====================================
The RISC-V architecture, in accordance with the Devicetree Specification,
requires the cpus and cpu nodes to be present and contain the properties
described below.
- cpus node
Description: Container of cpu nodes
The node name must be "cpus".
A cpus node must define the following properties:
- #address-cells
Usage: required
Value type: <u32>
Definition: must be set to 1
- #size-cells
Usage: required
Value type: <u32>
Definition: must be set to 0
- cpu node
Description: Describes a hart context
PROPERTIES
- device_type
Usage: required
Value type: <string>
Definition: must be "cpu"
- reg
Usage: required
Value type: <u32>
Definition: The hart ID of this CPU node
- compatible:
Usage: required
Value type: <stringlist>
Definition: must contain "riscv", may contain one of
"sifive,rocket0"
- mmu-type:
Usage: optional
Value type: <string>
Definition: Specifies the CPU's MMU type. Possible values are
"riscv,sv32"
"riscv,sv39"
"riscv,sv48"
- riscv,isa:
Usage: required
Value type: <string>
Definition: Contains the RISC-V ISA string of this hart. These
ISA strings are defined by the RISC-V ISA manual.
Example: SiFive Freedom U540G Development Kit
---------------------------------------------
This system contains two harts: a hart marked as disabled that's used for
low-level system tasks and should be ignored by Linux, and a second hart that
Linux is allowed to run on.
cpus {
#address-cells = <1>;
#size-cells = <0>;
timebase-frequency = <1000000>;
cpu@0 {
clock-frequency = <1600000000>;
compatible = "sifive,rocket0", "riscv";
device_type = "cpu";
i-cache-block-size = <64>;
i-cache-sets = <128>;
i-cache-size = <16384>;
next-level-cache = <&L15 &L0>;
reg = <0>;
riscv,isa = "rv64imac";
status = "disabled";
L10: interrupt-controller {
#interrupt-cells = <1>;
compatible = "riscv,cpu-intc";
interrupt-controller;
};
};
cpu@1 {
clock-frequency = <1600000000>;
compatible = "sifive,rocket0", "riscv";
d-cache-block-size = <64>;
d-cache-sets = <64>;
d-cache-size = <32768>;
d-tlb-sets = <1>;
d-tlb-size = <32>;
device_type = "cpu";
i-cache-block-size = <64>;
i-cache-sets = <64>;
i-cache-size = <32768>;
i-tlb-sets = <1>;
i-tlb-size = <32>;
mmu-type = "riscv,sv39";
next-level-cache = <&L15 &L0>;
reg = <1>;
riscv,isa = "rv64imafdc";
status = "okay";
tlb-split;
L13: interrupt-controller {
#interrupt-cells = <1>;
compatible = "riscv,cpu-intc";
interrupt-controller;
};
};
};
Example: Spike ISA Simulator with 1 Hart
----------------------------------------
This device tree matches the Spike ISA golden model as run with `spike -p1`.
cpus {
cpu@0 {
device_type = "cpu";
reg = <0x00000000>;
status = "okay";
compatible = "riscv";
riscv,isa = "rv64imafdc";
mmu-type = "riscv,sv48";
clock-frequency = <0x3b9aca00>;
interrupt-controller {
#interrupt-cells = <0x00000001>;
interrupt-controller;
compatible = "riscv,cpu-intc";
}
}
}

16
Documentation/devicetree/bindings/riscv/cpus.yaml
View File

@ -10,6 +10,18 @@ maintainers:
- Paul Walmsley <paul.walmsley@sifive.com>
- Palmer Dabbelt <palmer@sifive.com>
description: |
This document uses some terminology common to the RISC-V community
that is not widely used, the definitions of which are listed here:
hart: A hardware execution context, which contains all the state
mandated by the RISC-V ISA: a PC and some registers. This
terminology is designed to disambiguate software's view of execution
contexts from any particular microarchitectural implementation
strategy. For example, an Intel laptop containing one socket with
two cores, each of which has two hyperthreads, could be described as
having four harts.
properties:
compatible:
items:
@ -50,6 +62,10 @@ properties:
User-Level ISA document, available from
https://riscv.org/specifications/
While the isa strings in ISA specification are case
insensitive, letters in the riscv,isa string must be all
lowercase to simplify parsing.
timebase-frequency:
type: integer
minimum: 1

2
Documentation/devicetree/bindings/riscv/sifive.yaml
View File

@ -19,7 +19,7 @@ properties:
compatible:
items:
- enum:
- sifive,freedom-unleashed-a00
- sifive,hifive-unleashed-a00
- const: sifive,fu540-c000
- const: sifive,fu540
...

26
Documentation/filesystems/cifs/TODO
View File

@ -13,7 +13,8 @@ a) SMB3 (and SMB3.1.1) missing optional features:
- T10 copy offload ie "ODX" (copy chunk, and "Duplicate Extents" ioctl
currently the only two server side copy mechanisms supported)
b) improved sparse file support
b) improved sparse file support (fiemap and SEEK_HOLE are implemented
but additional features would be supportable by the protocol).
c) Directory entry caching relies on a 1 second timer, rather than
using Directory Leases, currently only the root file handle is cached longer
@ -21,9 +22,13 @@ using Directory Leases, currently only the root file handle is cached longer
d) quota support (needs minor kernel change since quota calls
to make it to network filesystems or deviceless filesystems)
e) Additional use cases where we use "compoounding" (e.g. open/query/close
and open/setinfo/close) to reduce the number of roundtrips, and also
open to reduce redundant opens (using deferred close and reference counts more).
e) Additional use cases can be optimized to use "compounding"
(e.g. open/query/close and open/setinfo/close) to reduce the number
of roundtrips to the server and improve performance. Various cases
(stat, statfs, create, unlink, mkdir) already have been improved by
using compounding but more can be done. In addition we could significantly
reduce redundant opens by using deferred close (with handle caching leases)
and better using reference counters on file handles.
f) Finish inotify support so kde and gnome file list windows
will autorefresh (partially complete by Asser). Needs minor kernel
@ -43,18 +48,17 @@ mount or a per server basis to client UIDs or nobody if no mapping
exists. Also better integration with winbind for resolving SID owners
k) Add tools to take advantage of more smb3 specific ioctls and features
(passthrough ioctl/fsctl for sending various SMB3 fsctls to the server
is in progress, and a passthrough query_info call is already implemented
in cifs.ko to allow smb3 info levels queries to be sent from userspace)
(passthrough ioctl/fsctl is now implemented in cifs.ko to allow sending
various SMB3 fsctls and query info and set info calls directly from user space)
Add tools to make setting various non-POSIX metadata attributes easier
from tools (e.g. extending what was done in smb-info tool).
l) encrypted file support
m) improved stats gathering tools (perhaps integration with nfsometer?)
to extend and make easier to use what is currently in /proc/fs/cifs/Stats
n) allow setting more NTFS/SMB3 file attributes remotely (currently limited to compressed
file attribute via chflags) and improve user space tools for managing and
viewing them.
n) Add support for claims based ACLs ("DAC")
o) mount helper GUI (to simplify the various configuration options on mount)
@ -82,6 +86,8 @@ so far).
w) Add support for additional strong encryption types, and additional spnego
authentication mechanisms (see MS-SMB2)
x) Finish support for SMB3.1.1 compression
KNOWN BUGS
====================================
See http://bugzilla.samba.org - search on product "CifsVFS" for

41
Documentation/networking/tls-offload.rst
View File

@ -424,13 +424,24 @@ Statistics
Following minimum set of TLS-related statistics should be reported
by the driver:
* ``rx_tls_decrypted`` - number of successfully decrypted TLS segments
* ``tx_tls_encrypted`` - number of in-order TLS segments passed to device
for encryption
* ``rx_tls_decrypted_packets`` - number of successfully decrypted RX packets
which were part of a TLS stream.
* ``rx_tls_decrypted_bytes`` - number of TLS payload bytes in RX packets
which were successfully decrypted.
* ``tx_tls_encrypted_packets`` - number of TX packets passed to the device
for encryption of their TLS payload.
* ``tx_tls_encrypted_bytes`` - number of TLS payload bytes in TX packets
passed to the device for encryption.
* ``tx_tls_ctx`` - number of TLS TX HW offload contexts added to device for
encryption.
* ``tx_tls_ooo`` - number of TX packets which were part of a TLS stream
but did not arrive in the expected order
* ``tx_tls_drop_no_sync_data`` - number of TX packets dropped because
they arrived out of order and associated record could not be found
but did not arrive in the expected order.
* ``tx_tls_drop_no_sync_data`` - number of TX packets which were part of
a TLS stream dropped, because they arrived out of order and associated
record could not be found.
* ``tx_tls_drop_bypass_req`` - number of TX packets which were part of a TLS
stream dropped, because they contain both data that has been encrypted by
software and data that expects hardware crypto offload.
Notable corner cases, exceptions and additional requirements
============================================================
@ -495,21 +506,3 @@ Drivers should ignore the changes to TLS the device feature flags.
These flags will be acted upon accordingly by the core ``ktls`` code.
TLS device feature flags only control adding of new TLS connection
offloads, old connections will remain active after flags are cleared.
Known bugs
==========
skb_orphan() leaks clear text
-----------------------------
Currently drivers depend on the :c:member:`sk` member of
:c:type:`struct sk_buff <sk_buff>` to identify segments requiring
encryption. Any operation which removes or does not preserve the socket
association such as :c:func:`skb_orphan` or :c:func:`skb_clone`
will cause the driver to miss the packets and lead to clear text leaks.
Redirects leak clear text
-------------------------
In the RX direction, if segment has already been decrypted by the device
and it gets redirected or mirrored - clear text will be transmitted out.

4
Documentation/networking/tuntap.txt
View File

@ -204,8 +204,8 @@ Ethernet device, which instead of receiving packets from a physical
media, receives them from user space program and instead of sending
packets via physical media sends them to the user space program.
Let's say that you configured IPX on the tap0, then whenever
the kernel sends an IPX packet to tap0, it is passed to the application
Let's say that you configured IPv6 on the tap0, then whenever
the kernel sends an IPv6 packet to tap0, it is passed to the application
(VTun for example). The application encrypts, compresses and sends it to
the other side over TCP or UDP. The application on the other side decompresses
and decrypts the data received and writes the packet to the TAP device,

39
MAINTAINERS
View File

@ -183,7 +183,7 @@ M: Realtek linux nic maintainers <nic_swsd@realtek.com>
M: Heiner Kallweit <hkallweit1@gmail.com>
L: netdev@vger.kernel.org
S: Maintained
F: drivers/net/ethernet/realtek/r8169.c
F: drivers/net/ethernet/realtek/r8169*
8250/16?50 (AND CLONE UARTS) SERIAL DRIVER
M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
@ -6065,7 +6065,7 @@ M: Florian Fainelli <f.fainelli@gmail.com>
M: Heiner Kallweit <hkallweit1@gmail.com>
L: netdev@vger.kernel.org
S: Maintained
F: Documentation/ABI/testing/sysfs-bus-mdio
F: Documentation/ABI/testing/sysfs-class-net-phydev
F: Documentation/devicetree/bindings/net/ethernet-phy.yaml
F: Documentation/devicetree/bindings/net/mdio*
F: Documentation/networking/phy.rst
@ -6344,7 +6344,7 @@ FPGA MANAGER FRAMEWORK
M: Moritz Fischer <mdf@kernel.org>
L: linux-fpga@vger.kernel.org
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/atull/linux-fpga.git
T: git git://git.kernel.org/pub/scm/linux/kernel/git/mdf/linux-fpga.git
Q: http://patchwork.kernel.org/project/linux-fpga/list/
F: Documentation/fpga/
F: Documentation/driver-api/fpga/
@ -6377,7 +6377,7 @@ FRAMEBUFFER LAYER
M: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
L: dri-devel@lists.freedesktop.org
L: linux-fbdev@vger.kernel.org
T: git git://github.com/bzolnier/linux.git
T: git git://anongit.freedesktop.org/drm/drm-misc
Q: http://patchwork.kernel.org/project/linux-fbdev/list/
S: Maintained
F: Documentation/fb/
@ -6441,6 +6441,14 @@ S: Maintained
F: drivers/perf/fsl_imx8_ddr_perf.c
F: Documentation/devicetree/bindings/perf/fsl-imx-ddr.txt
FREESCALE IMX I2C DRIVER
M: Oleksij Rempel <o.rempel@pengutronix.de>
R: Pengutronix Kernel Team <kernel@pengutronix.de>
L: linux-i2c@vger.kernel.org
S: Maintained
F: drivers/i2c/busses/i2c-imx.c
F: Documentation/devicetree/bindings/i2c/i2c-imx.txt
FREESCALE IMX LPI2C DRIVER
M: Dong Aisheng <aisheng.dong@nxp.com>
L: linux-i2c@vger.kernel.org
@ -6827,13 +6835,6 @@ F: Documentation/filesystems/gfs2*.txt
F: fs/gfs2/
F: include/uapi/linux/gfs2_ondisk.h
GIGASET ISDN DRIVERS
M: Paul Bolle <pebolle@tiscali.nl>
L: gigaset307x-common@lists.sourceforge.net
W: http://gigaset307x.sourceforge.net/
S: Odd Fixes
F: drivers/staging/isdn/gigaset/
GNSS SUBSYSTEM
M: Johan Hovold <johan@kernel.org>
T: git git://git.kernel.org/pub/scm/linux/kernel/git/johan/gnss.git
@ -7459,7 +7460,7 @@ F: drivers/net/hyperv/
F: drivers/scsi/storvsc_drv.c
F: drivers/uio/uio_hv_generic.c
F: drivers/video/fbdev/hyperv_fb.c
F: drivers/iommu/hyperv_iommu.c
F: drivers/iommu/hyperv-iommu.c
F: net/vmw_vsock/hyperv_transport.c
F: include/clocksource/hyperv_timer.h
F: include/linux/hyperv.h
@ -8049,6 +8050,7 @@ S: Maintained
F: drivers/video/fbdev/i810/
INTEL ASoC DRIVERS
M: Cezary Rojewski <cezary.rojewski@intel.com>
M: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
M: Liam Girdwood <liam.r.girdwood@linux.intel.com>
M: Jie Yang <yang.jie@linux.intel.com>
@ -8070,6 +8072,13 @@ T: git git://git.code.sf.net/p/intel-sas/isci
S: Supported
F: drivers/scsi/isci/
INTEL CPU family model numbers
M: Tony Luck <tony.luck@intel.com>
M: x86@kernel.org
L: linux-kernel@vger.kernel.org
S: Supported
F: arch/x86/include/asm/intel-family.h
INTEL DRM DRIVERS (excluding Poulsbo, Moorestown and derivative chipsets)
M: Jani Nikula <jani.nikula@linux.intel.com>
M: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
@ -8421,7 +8430,6 @@ L: linux-xfs@vger.kernel.org
L: linux-fsdevel@vger.kernel.org
T: git git://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git
S: Supported
F: fs/iomap.c
F: fs/iomap/
F: include/linux/iomap.h
@ -11149,6 +11157,7 @@ L: netdev@vger.kernel.org
S: Maintained
W: https://fedorahosted.org/dropwatch/
F: net/core/drop_monitor.c
F: include/uapi/linux/net_dropmon.h
NETWORKING DRIVERS
M: "David S. Miller" <davem@davemloft.net>
@ -11287,6 +11296,7 @@ M: Aviad Yehezkel <aviadye@mellanox.com>
M: Dave Watson <davejwatson@fb.com>
M: John Fastabend <john.fastabend@gmail.com>
M: Daniel Borkmann <daniel@iogearbox.net>
M: Jakub Kicinski <jakub.kicinski@netronome.com>
L: netdev@vger.kernel.org
S: Maintained
F: net/tls/*
@ -16089,7 +16099,7 @@ S: Maintained
F: drivers/net/ethernet/ti/netcp*
TI PCM3060 ASoC CODEC DRIVER
M: Kirill Marinushkin <kmarinushkin@birdec.tech>
M: Kirill Marinushkin <kmarinushkin@birdec.com>
L: alsa-devel@alsa-project.org (moderated for non-subscribers)
S: Maintained
F: Documentation/devicetree/bindings/sound/pcm3060.txt
@ -17565,7 +17575,6 @@ M: Jakub Kicinski <jakub.kicinski@netronome.com>
M: Jesper Dangaard Brouer <hawk@kernel.org>
M: John Fastabend <john.fastabend@gmail.com>
L: netdev@vger.kernel.org
L: xdp-newbies@vger.kernel.org
L: bpf@vger.kernel.org
S: Supported
F: net/core/xdp.c

24
Makefile
View File

@ -2,7 +2,7 @@
VERSION = 5
PATCHLEVEL = 3
SUBLEVEL = 0
EXTRAVERSION = -rc3
EXTRAVERSION = -rc5
NAME = Bobtail Squid
# *DOCUMENTATION*
@ -419,6 +419,7 @@ NM = $(CROSS_COMPILE)nm
STRIP = $(CROSS_COMPILE)strip
OBJCOPY = $(CROSS_COMPILE)objcopy
OBJDUMP = $(CROSS_COMPILE)objdump
OBJSIZE = $(CROSS_COMPILE)size
PAHOLE = pahole
LEX = flex
YACC = bison
@ -475,9 +476,9 @@ GCC_PLUGINS_CFLAGS :=
CLANG_FLAGS :=
export ARCH SRCARCH CONFIG_SHELL HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC
export CPP AR NM STRIP OBJCOPY OBJDUMP PAHOLE KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS
export MAKE LEX YACC AWK INSTALLKERNEL PERL PYTHON PYTHON2 PYTHON3 UTS_MACHINE
export HOSTCXX KBUILD_HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE PAHOLE LEX YACC AWK INSTALLKERNEL
export PERL PYTHON PYTHON2 PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX
export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE
export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS
export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
@ -845,7 +846,7 @@ NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
KBUILD_CFLAGS += -Wdeclaration-after-statement
# Warn about unmarked fall-throughs in switch statement.
KBUILD_CFLAGS += $(call cc-option,-Wimplicit-fallthrough=3,)
KBUILD_CFLAGS += $(call cc-option,-Wimplicit-fallthrough,)
# Variable Length Arrays (VLAs) should not be used anywhere in the kernel
KBUILD_CFLAGS += -Wvla
@ -1002,6 +1003,8 @@ endif
PHONY += prepare0
export MODORDER := $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/)modules.order
ifeq ($(KBUILD_EXTMOD),)
core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/
@ -1771,13 +1774,22 @@ build-dir = $(patsubst %/,%,$(dir $(build-target)))
$(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
%.symtypes: prepare FORCE
$(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
ifeq ($(KBUILD_EXTMOD),)
# For the single build of an in-tree module, use a temporary file to avoid
# the situation of modules_install installing an invalid modules.order.
%.ko: MODORDER := .modules.tmp
endif
%.ko: prepare FORCE
$(Q)$(MAKE) $(build)=$(build-dir) $(build-target:.ko=.mod)
$(Q)echo $(build-target) > $(MODORDER)
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
# Modules
PHONY += /
/: ./
%/: prepare FORCE
$(Q)$(MAKE) KBUILD_MODULES=1 $(build)=$(build-dir)
$(Q)$(MAKE) KBUILD_MODULES=1 $(build)=$(build-dir) need-modorder=1
# FIXME Should go into a make.lib or something
# ===========================================================================

5
arch/arm/kernel/hw_breakpoint.c
View File

@ -544,6 +544,7 @@ static int arch_build_bp_info(struct perf_event *bp,
if ((hw->ctrl.type != ARM_BREAKPOINT_EXECUTE)
&& max_watchpoint_len >= 8)
break;
/* Else, fall through */
default:
return -EINVAL;
}
@ -608,10 +609,12 @@ int hw_breakpoint_arch_parse(struct perf_event *bp,
/* Allow halfword watchpoints and breakpoints. */
if (hw->ctrl.len == ARM_BREAKPOINT_LEN_2)
break;
/* Else, fall through */
case 3:
/* Allow single byte watchpoint. */
if (hw->ctrl.len == ARM_BREAKPOINT_LEN_1)
break;
/* Else, fall through */
default:
ret = -EINVAL;
goto out;
@ -861,6 +864,7 @@ static int hw_breakpoint_pending(unsigned long addr, unsigned int fsr,
break;
case ARM_ENTRY_ASYNC_WATCHPOINT:
WARN(1, "Asynchronous watchpoint exception taken. Debugging results may be unreliable\n");
/* Fall through */
case ARM_ENTRY_SYNC_WATCHPOINT:
watchpoint_handler(addr, fsr, regs);
break;
@ -909,6 +913,7 @@ static bool core_has_os_save_restore(void)
ARM_DBG_READ(c1, c1, 4, oslsr);
if (oslsr & ARM_OSLSR_OSLM0)
return true;
/* Else, fall through */
default:
return false;
}

1
arch/arm/kernel/signal.c
View File

@ -596,6 +596,7 @@ static int do_signal(struct pt_regs *regs, int syscall)
switch (retval) {
case -ERESTART_RESTARTBLOCK:
restart -= 2;
/* Fall through */
case -ERESTARTNOHAND:
case -ERESTARTSYS:
case -ERESTARTNOINTR:

23
arch/arm/kvm/coproc.c
View File

@ -651,13 +651,22 @@ int kvm_handle_cp14_64(struct kvm_vcpu *vcpu, struct kvm_run *run)
}
static void reset_coproc_regs(struct kvm_vcpu *vcpu,
const struct coproc_reg *table, size_t num)
const struct coproc_reg *table, size_t num,
unsigned long *bmap)
{
unsigned long i;
for (i = 0; i < num; i++)
if (table[i].reset)
if (table[i].reset) {
int reg = table[i].reg;
table[i].reset(vcpu, &table[i]);
if (reg > 0 && reg < NR_CP15_REGS) {
set_bit(reg, bmap);
if (table[i].is_64bit)
set_bit(reg + 1, bmap);
}
}
}
static struct coproc_params decode_32bit_hsr(struct kvm_vcpu *vcpu)
@ -1432,17 +1441,15 @@ void kvm_reset_coprocs(struct kvm_vcpu *vcpu)
{
size_t num;
const struct coproc_reg *table;
/* Catch someone adding a register without putting in reset entry. */
memset(vcpu->arch.ctxt.cp15, 0x42, sizeof(vcpu->arch.ctxt.cp15));
DECLARE_BITMAP(bmap, NR_CP15_REGS) = { 0, };
/* Generic chip reset first (so target could override). */
reset_coproc_regs(vcpu, cp15_regs, ARRAY_SIZE(cp15_regs));
reset_coproc_regs(vcpu, cp15_regs, ARRAY_SIZE(cp15_regs), bmap);
table = get_target_table(vcpu->arch.target, &num);
reset_coproc_regs(vcpu, table, num);
reset_coproc_regs(vcpu, table, num, bmap);
for (num = 1; num < NR_CP15_REGS; num++)
WARN(vcpu_cp15(vcpu, num) == 0x42424242,
WARN(!test_bit(num, bmap),
"Didn't reset vcpu_cp15(vcpu, %zi)", num);
}

1
arch/arm/mach-ep93xx/crunch.c
View File

@ -49,6 +49,7 @@ static int crunch_do(struct notifier_block *self, unsigned long cmd, void *t)
* FALLTHROUGH: Ensure we don't try to overwrite our newly
* initialised state information on the first fault.
*/
/* Fall through */
case THREAD_NOTIFY_EXIT:
crunch_task_release(thread);

2
arch/arm/mach-tegra/reset.c
View File

@ -70,7 +70,7 @@ static void __init tegra_cpu_reset_handler_enable(void)
switch (err) {
case -ENOSYS:
tegra_cpu_reset_handler_set(reset_address);
/* pass-through */
/* fall through */
case 0:
is_enabled = true;
break;

4
arch/arm/mm/alignment.c
View File

@ -695,7 +695,7 @@ thumb2arm(u16 tinstr)
return subset[(L<<1) | ((tinstr & (1<<8)) >> 8)] |
(tinstr & 255); /* register_list */
}
/* Else fall through for illegal instruction case */
/* Else, fall through - for illegal instruction case */
default:
return BAD_INSTR;
@ -751,6 +751,8 @@ do_alignment_t32_to_handler(unsigned long *pinstr, struct pt_regs *regs,
case 0xe8e0:
case 0xe9e0:
poffset->un = (tinst2 & 0xff) << 2;
/* Fall through */
case 0xe940:
case 0xe9c0:
return do_alignment_ldrdstrd;

4
arch/arm/mm/dma-mapping.c
View File

@ -2405,9 +2405,7 @@ long arch_dma_coherent_to_pfn(struct device *dev, void *cpu_addr,
pgprot_t arch_dma_mmap_pgprot(struct device *dev, pgprot_t prot,
unsigned long attrs)
{
if (!dev_is_dma_coherent(dev))
return __get_dma_pgprot(attrs, prot);
return prot;
return __get_dma_pgprot(attrs, prot);
}
void *arch_dma_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle,

14
arch/arm/plat-omap/dma.c
View File

@ -388,17 +388,15 @@ void omap_set_dma_src_burst_mode(int lch, enum omap_dma_burst_mode burst_mode)
/*
* not supported by current hardware on OMAP1
* w |= (0x03 << 7);
* fall through
*/
/* fall through */
case OMAP_DMA_DATA_BURST_16:
if (dma_omap2plus()) {
burst = 0x3;
break;
}
/*
* OMAP1 don't support burst 16
* fall through
*/
/* OMAP1 don't support burst 16 */
/* fall through */
default:
BUG();
}
@ -474,10 +472,8 @@ void omap_set_dma_dest_burst_mode(int lch, enum omap_dma_burst_mode burst_mode)
burst = 0x3;
break;
}
/*
* OMAP1 don't support burst 16
* fall through
*/
/* OMAP1 don't support burst 16 */
/* fall through */
default:
printk(KERN_ERR "Invalid DMA burst mode\n");
BUG();

7
arch/arm64/include/asm/kvm_arm.h
View File

@ -316,9 +316,10 @@
#define kvm_arm_exception_class \
ECN(UNKNOWN), ECN(WFx), ECN(CP15_32), ECN(CP15_64), ECN(CP14_MR), \
ECN(CP14_LS), ECN(FP_ASIMD), ECN(CP10_ID), ECN(CP14_64), ECN(SVC64), \
ECN(HVC64), ECN(SMC64), ECN(SYS64), ECN(IMP_DEF), ECN(IABT_LOW), \
ECN(IABT_CUR), ECN(PC_ALIGN), ECN(DABT_LOW), ECN(DABT_CUR), \
ECN(CP14_LS), ECN(FP_ASIMD), ECN(CP10_ID), ECN(PAC), ECN(CP14_64), \
ECN(SVC64), ECN(HVC64), ECN(SMC64), ECN(SYS64), ECN(SVE), \
ECN(IMP_DEF), ECN(IABT_LOW), ECN(IABT_CUR), \
ECN(PC_ALIGN), ECN(DABT_LOW), ECN(DABT_CUR), \
ECN(SP_ALIGN), ECN(FP_EXC32), ECN(FP_EXC64), ECN(SERROR), \
ECN(BREAKPT_LOW), ECN(BREAKPT_CUR), ECN(SOFTSTP_LOW), \
ECN(SOFTSTP_CUR), ECN(WATCHPT_LOW), ECN(WATCHPT_CUR), \

7
arch/arm64/include/asm/pgtable.h
View File

@ -209,7 +209,7 @@ static inline pmd_t pmd_mkcont(pmd_t pmd)
static inline pte_t pte_mkdevmap(pte_t pte)
{
return set_pte_bit(pte, __pgprot(PTE_DEVMAP));
return set_pte_bit(pte, __pgprot(PTE_DEVMAP | PTE_SPECIAL));
}
static inline void set_pte(pte_t *ptep, pte_t pte)
@ -396,7 +396,10 @@ static inline int pmd_protnone(pmd_t pmd)
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
#define pmd_devmap(pmd) pte_devmap(pmd_pte(pmd))
#endif
#define pmd_mkdevmap(pmd) pte_pmd(pte_mkdevmap(pmd_pte(pmd)))
static inline pmd_t pmd_mkdevmap(pmd_t pmd)
{
return pte_pmd(set_pte_bit(pmd_pte(pmd), __pgprot(PTE_DEVMAP)));
}
#define __pmd_to_phys(pmd) __pte_to_phys(pmd_pte(pmd))
#define __phys_to_pmd_val(phys) __phys_to_pte_val(phys)

14
arch/arm64/kernel/cpufeature.c
View File

@ -184,9 +184,17 @@ static const struct arm64_ftr_bits ftr_id_aa64zfr0[] = {
};
static const struct arm64_ftr_bits ftr_id_aa64mmfr0[] = {
S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_TGRAN4_SHIFT, 4, ID_AA64MMFR0_TGRAN4_NI),
S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_TGRAN64_SHIFT, 4, ID_AA64MMFR0_TGRAN64_NI),
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_TGRAN16_SHIFT, 4, ID_AA64MMFR0_TGRAN16_NI),
/*
* We already refuse to boot CPUs that don't support our configured
* page size, so we can only detect mismatches for a page size other
* than the one we're currently using. Unfortunately, SoCs like this
* exist in the wild so, even though we don't like it, we'll have to go
* along with it and treat them as non-strict.
*/
S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_TGRAN4_SHIFT, 4, ID_AA64MMFR0_TGRAN4_NI),
S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_TGRAN64_SHIFT, 4, ID_AA64MMFR0_TGRAN64_NI),
ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_TGRAN16_SHIFT, 4, ID_AA64MMFR0_TGRAN16_NI),
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_BIGENDEL0_SHIFT, 4, 0),
/* Linux shouldn't care about secure memory */
ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR0_SNSMEM_SHIFT, 4, 0),

22
arch/arm64/kernel/ftrace.c
View File

@ -73,7 +73,7 @@ int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
if (offset < -SZ_128M || offset >= SZ_128M) {
#ifdef CONFIG_ARM64_MODULE_PLTS
struct plt_entry trampoline;
struct plt_entry trampoline, *dst;
struct module *mod;
/*
@ -106,23 +106,27 @@ int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
* to check if the actual opcodes are in fact identical,
* regardless of the offset in memory so use memcmp() instead.
*/
trampoline = get_plt_entry(addr, mod->arch.ftrace_trampoline);
if (memcmp(mod->arch.ftrace_trampoline, &trampoline,
sizeof(trampoline))) {
if (plt_entry_is_initialized(mod->arch.ftrace_trampoline)) {
dst = mod->arch.ftrace_trampoline;
trampoline = get_plt_entry(addr, dst);
if (memcmp(dst, &trampoline, sizeof(trampoline))) {
if (plt_entry_is_initialized(dst)) {
pr_err("ftrace: far branches to multiple entry points unsupported inside a single module\n");
return -EINVAL;
}
/* point the trampoline to our ftrace entry point */
module_disable_ro(mod);
*mod->arch.ftrace_trampoline = trampoline;
*dst = trampoline;
module_enable_ro(mod, true);
/* update trampoline before patching in the branch */
smp_wmb();
/*
* Ensure updated trampoline is visible to instruction
* fetch before we patch in the branch.
*/
__flush_icache_range((unsigned long)&dst[0],
(unsigned long)&dst[1]);
}
addr = (unsigned long)(void *)mod->arch.ftrace_trampoline;
addr = (unsigned long)dst;
#else /* CONFIG_ARM64_MODULE_PLTS */
return -EINVAL;
#endif /* CONFIG_ARM64_MODULE_PLTS */

1
arch/arm64/kernel/traps.c
View File

@ -733,6 +733,7 @@ static const char *esr_class_str[] = {
[ESR_ELx_EC_CP14_LS] = "CP14 LDC/STC",
[ESR_ELx_EC_FP_ASIMD] = "ASIMD",
[ESR_ELx_EC_CP10_ID] = "CP10 MRC/VMRS",
[ESR_ELx_EC_PAC] = "PAC",
[ESR_ELx_EC_CP14_64] = "CP14 MCRR/MRRC",
[ESR_ELx_EC_ILL] = "PSTATE.IL",
[ESR_ELx_EC_SVC32] = "SVC (AArch32)",

30
arch/arm64/kvm/hyp/debug-sr.c
View File

@ -18,40 +18,70 @@
#define save_debug(ptr,reg,nr) \
switch (nr) { \
case 15: ptr[15] = read_debug(reg, 15); \
/* Fall through */ \
case 14: ptr[14] = read_debug(reg, 14); \
/* Fall through */ \
case 13: ptr[13] = read_debug(reg, 13); \
/* Fall through */ \
case 12: ptr[12] = read_debug(reg, 12); \
/* Fall through */ \
case 11: ptr[11] = read_debug(reg, 11); \
/* Fall through */ \
case 10: ptr[10] = read_debug(reg, 10); \
/* Fall through */ \
case 9: ptr[9] = read_debug(reg, 9); \
/* Fall through */ \
case 8: ptr[8] = read_debug(reg, 8); \
/* Fall through */ \
case 7: ptr[7] = read_debug(reg, 7); \
/* Fall through */ \
case 6: ptr[6] = read_debug(reg, 6); \
/* Fall through */ \
case 5: ptr[5] = read_debug(reg, 5); \
/* Fall through */ \
case 4: ptr[4] = read_debug(reg, 4); \
/* Fall through */ \
case 3: ptr[3] = read_debug(reg, 3); \
/* Fall through */ \
case 2: ptr[2] = read_debug(reg, 2); \
/* Fall through */ \
case 1: ptr[1] = read_debug(reg, 1); \
/* Fall through */ \
default: ptr[0] = read_debug(reg, 0); \
}
#define restore_debug(ptr,reg,nr) \
switch (nr) { \
case 15: write_debug(ptr[15], reg, 15); \
/* Fall through */ \
case 14: write_debug(ptr[14], reg, 14); \
/* Fall through */ \
case 13: write_debug(ptr[13], reg, 13); \
/* Fall through */ \
case 12: write_debug(ptr[12], reg, 12); \
/* Fall through */ \
case 11: write_debug(ptr[11], reg, 11); \
/* Fall through */ \
case 10: write_debug(ptr[10], reg, 10); \
/* Fall through */ \
case 9: write_debug(ptr[9], reg, 9); \
/* Fall through */ \
case 8: write_debug(ptr[8], reg, 8); \
/* Fall through */ \
case 7: write_debug(ptr[7], reg, 7); \
/* Fall through */ \
case 6: write_debug(ptr[6], reg, 6); \
/* Fall through */ \
case 5: write_debug(ptr[5], reg, 5); \
/* Fall through */ \
case 4: write_debug(ptr[4], reg, 4); \
/* Fall through */ \
case 3: write_debug(ptr[3], reg, 3); \
/* Fall through */ \
case 2: write_debug(ptr[2], reg, 2); \
/* Fall through */ \
case 1: write_debug(ptr[1], reg, 1); \
/* Fall through */ \
default: write_debug(ptr[0], reg, 0); \
}

5
arch/arm64/kvm/regmap.c
View File

@ -178,13 +178,18 @@ void vcpu_write_spsr32(struct kvm_vcpu *vcpu, unsigned long v)
switch (spsr_idx) {
case KVM_SPSR_SVC:
write_sysreg_el1(v, SYS_SPSR);
break;
case KVM_SPSR_ABT:
write_sysreg(v, spsr_abt);
break;
case KVM_SPSR_UND:
write_sysreg(v, spsr_und);
break;
case KVM_SPSR_IRQ:
write_sysreg(v, spsr_irq);
break;
case KVM_SPSR_FIQ:
write_sysreg(v, spsr_fiq);
break;
}
}

32
arch/arm64/kvm/sys_regs.c
View File

@ -632,7 +632,7 @@ static void reset_pmcr(struct kvm_vcpu *vcpu, const struct sys_reg_desc *r)
*/
val = ((pmcr & ~ARMV8_PMU_PMCR_MASK)
| (ARMV8_PMU_PMCR_MASK & 0xdecafbad)) & (~ARMV8_PMU_PMCR_E);
__vcpu_sys_reg(vcpu, PMCR_EL0) = val;
__vcpu_sys_reg(vcpu, r->reg) = val;
}
static bool check_pmu_access_disabled(struct kvm_vcpu *vcpu, u64 flags)
@ -981,13 +981,13 @@ static bool access_pmuserenr(struct kvm_vcpu *vcpu, struct sys_reg_params *p,
/* Silly macro to expand the DBG{BCR,BVR,WVR,WCR}n_EL1 registers in one go */
#define DBG_BCR_BVR_WCR_WVR_EL1(n) \
{ SYS_DESC(SYS_DBGBVRn_EL1(n)), \
trap_bvr, reset_bvr, n, 0, get_bvr, set_bvr }, \
trap_bvr, reset_bvr, 0, 0, get_bvr, set_bvr }, \
{ SYS_DESC(SYS_DBGBCRn_EL1(n)), \
trap_bcr, reset_bcr, n, 0, get_bcr, set_bcr }, \
trap_bcr, reset_bcr, 0, 0, get_bcr, set_bcr }, \
{ SYS_DESC(SYS_DBGWVRn_EL1(n)), \
trap_wvr, reset_wvr, n, 0, get_wvr, set_wvr }, \
trap_wvr, reset_wvr, 0, 0, get_wvr, set_wvr }, \
{ SYS_DESC(SYS_DBGWCRn_EL1(n)), \
trap_wcr, reset_wcr, n, 0, get_wcr, set_wcr }
trap_wcr, reset_wcr, 0, 0, get_wcr, set_wcr }
/* Macro to expand the PMEVCNTRn_EL0 register */
#define PMU_PMEVCNTR_EL0(n) \
@ -1540,7 +1540,7 @@ static const struct sys_reg_desc sys_reg_descs[] = {
{ SYS_DESC(SYS_CSSELR_EL1), access_csselr, reset_unknown, CSSELR_EL1 },
{ SYS_DESC(SYS_CTR_EL0), access_ctr },
{ SYS_DESC(SYS_PMCR_EL0), access_pmcr, reset_pmcr, },
{ SYS_DESC(SYS_PMCR_EL0), access_pmcr, reset_pmcr, PMCR_EL0 },
{ SYS_DESC(SYS_PMCNTENSET_EL0), access_pmcnten, reset_unknown, PMCNTENSET_EL0 },
{ SYS_DESC(SYS_PMCNTENCLR_EL0), access_pmcnten, NULL, PMCNTENSET_EL0 },
{ SYS_DESC(SYS_PMOVSCLR_EL0), access_pmovs, NULL, PMOVSSET_EL0 },
@ -2254,13 +2254,19 @@ static int emulate_sys_reg(struct kvm_vcpu *vcpu,
}
static void reset_sys_reg_descs(struct kvm_vcpu *vcpu,
const struct sys_reg_desc *table, size_t num)
const struct sys_reg_desc *table, size_t num,
unsigned long *bmap)
{
unsigned long i;
for (i = 0; i < num; i++)
if (table[i].reset)
if (table[i].reset) {
int reg = table[i].reg;
table[i].reset(vcpu, &table[i]);
if (reg > 0 && reg < NR_SYS_REGS)
set_bit(reg, bmap);
}
}
/**
@ -2774,18 +2780,16 @@ void kvm_reset_sys_regs(struct kvm_vcpu *vcpu)
{
size_t num;
const struct sys_reg_desc *table;
/* Catch someone adding a register without putting in reset entry. */
memset(&vcpu->arch.ctxt.sys_regs, 0x42, sizeof(vcpu->arch.ctxt.sys_regs));
DECLARE_BITMAP(bmap, NR_SYS_REGS) = { 0, };
/* Generic chip reset first (so target could override). */
reset_sys_reg_descs(vcpu, sys_reg_descs, ARRAY_SIZE(sys_reg_descs));
reset_sys_reg_descs(vcpu, sys_reg_descs, ARRAY_SIZE(sys_reg_descs), bmap);
table = get_target_table(vcpu->arch.target, true, &num);
reset_sys_reg_descs(vcpu, table, num);
reset_sys_reg_descs(vcpu, table, num, bmap);
for (num = 1; num < NR_SYS_REGS; num++) {
if (WARN(__vcpu_sys_reg(vcpu, num) == 0x4242424242424242,
if (WARN(!test_bit(num, bmap),
"Didn't reset __vcpu_sys_reg(%zi)\n", num))
break;
}

4
arch/arm64/mm/dma-mapping.c
View File

@ -14,9 +14,7 @@
pgprot_t arch_dma_mmap_pgprot(struct device *dev, pgprot_t prot,
unsigned long attrs)
{
if (!dev_is_dma_coherent(dev) || (attrs & DMA_ATTR_WRITE_COMBINE))
return pgprot_writecombine(prot);
return prot;
return pgprot_writecombine(prot);
}
void arch_sync_dma_for_device(struct device *dev, phys_addr_t paddr,

1
arch/mips/cavium-octeon/octeon-usb.c
View File

@ -398,6 +398,7 @@ static int dwc3_octeon_clocks_start(struct device *dev, u64 base)
default:
dev_err(dev, "Invalid ref_clk %u, using 100000000 instead\n",
clock_rate);
/* fall through */
case 100000000:
mpll_mul = 0x19;
if (ref_clk_sel < 2)

2
arch/mips/kernel/cacheinfo.c
View File

@ -69,6 +69,8 @@ static int __populate_cache_leaves(unsigned int cpu)
if (c->tcache.waysize)
populate_cache(tcache, this_leaf, 3, CACHE_TYPE_UNIFIED);
this_cpu_ci->cpu_map_populated = true;
return 0;
}

3
arch/mips/kernel/i8253.c
View File

@ -32,7 +32,8 @@ void __init setup_pit_timer(void)
static int __init init_pit_clocksource(void)
{
if (num_possible_cpus() > 1) /* PIT does not scale! */
if (num_possible_cpus() > 1 || /* PIT does not scale! */
!clockevent_state_periodic(&i8253_clockevent))
return 0;
return clocksource_i8253_init();

1
arch/mips/kvm/emulate.c
View File

@ -140,6 +140,7 @@ static int kvm_compute_return_epc(struct kvm_vcpu *vcpu, unsigned long instpc,
/* These are unconditional and in j_format. */
case jal_op:
arch->gprs[31] = instpc + 8;
/* fall through */
case j_op:
epc += 4;
epc >>= 28;

10
arch/mips/kvm/mips.c
View File

@ -150,16 +150,6 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
return 0;
}
bool kvm_arch_has_vcpu_debugfs(void)
{
return false;
}
int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
{
return 0;
}
void kvm_mips_free_vcpus(struct kvm *kvm)
{
unsigned int i;

13
arch/mips/oprofile/op_model_mipsxx.c
View File

@ -172,12 +172,15 @@ static void mipsxx_cpu_setup(void *args)
case 4:
w_c0_perfctrl3(0);
w_c0_perfcntr3(reg.counter[3]);
/* fall through */
case 3:
w_c0_perfctrl2(0);
w_c0_perfcntr2(reg.counter[2]);
/* fall through */
case 2:
w_c0_perfctrl1(0);
w_c0_perfcntr1(reg.counter[1]);
/* fall through */
case 1:
w_c0_perfctrl0(0);
w_c0_perfcntr0(reg.counter[0]);
@ -195,10 +198,13 @@ static void mipsxx_cpu_start(void *args)
switch (counters) {
case 4:
w_c0_perfctrl3(WHAT | reg.control[3]);
/* fall through */
case 3:
w_c0_perfctrl2(WHAT | reg.control[2]);
/* fall through */
case 2:
w_c0_perfctrl1(WHAT | reg.control[1]);
/* fall through */
case 1:
w_c0_perfctrl0(WHAT | reg.control[0]);
}
@ -215,10 +221,13 @@ static void mipsxx_cpu_stop(void *args)
switch (counters) {
case 4:
w_c0_perfctrl3(0);
/* fall through */
case 3:
w_c0_perfctrl2(0);
/* fall through */
case 2:
w_c0_perfctrl1(0);
/* fall through */
case 1:
w_c0_perfctrl0(0);
}
@ -236,6 +245,7 @@ static int mipsxx_perfcount_handler(void)
switch (counters) {
#define HANDLE_COUNTER(n) \
/* fall through */ \
case n + 1: \
control = r_c0_perfctrl ## n(); \
counter = r_c0_perfcntr ## n(); \
@ -297,12 +307,15 @@ static void reset_counters(void *arg)
case 4:
w_c0_perfctrl3(0);
w_c0_perfcntr3(0);
/* fall through */
case 3:
w_c0_perfctrl2(0);
w_c0_perfcntr2(0);
/* fall through */
case 2:
w_c0_perfctrl1(0);
w_c0_perfcntr1(0);
/* fall through */
case 1:
w_c0_perfctrl0(0);
w_c0_perfcntr0(0);

1
arch/mips/pci/ops-bcm63xx.c
View File

@ -474,6 +474,7 @@ static int bcm63xx_pcie_can_access(struct pci_bus *bus, int devfn)
if (PCI_SLOT(devfn) == 0)
return bcm_pcie_readl(PCIE_DLSTATUS_REG)
& DLSTATUS_PHYLINKUP;
/* else, fall through */
default:
return false;
}

2
arch/parisc/math-emu/Makefile
View File

@ -18,4 +18,4 @@ obj-y := frnd.o driver.o decode_exc.o fpudispatch.o denormal.o \
# other very old or stripped-down PA-RISC CPUs -- not currently supported
obj-$(CONFIG_MATH_EMULATION) += unimplemented-math-emulation.o
CFLAGS_REMOVE_fpudispatch.o = -Wimplicit-fallthrough=3
CFLAGS_REMOVE_fpudispatch.o = -Wimplicit-fallthrough

1
arch/powerpc/Kconfig
View File

@ -121,7 +121,6 @@ config PPC
select ARCH_32BIT_OFF_T if PPC32
select ARCH_HAS_DEBUG_VIRTUAL
select ARCH_HAS_DEVMEM_IS_ALLOWED
select ARCH_HAS_DMA_MMAP_PGPROT
select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_FORTIFY_SOURCE
select ARCH_HAS_GCOV_PROFILE_ALL

8
arch/powerpc/include/asm/cache.h
View File

@ -107,22 +107,22 @@ extern void _set_L3CR(unsigned long);
static inline void dcbz(void *addr)
{
__asm__ __volatile__ ("dcbz %y0" : : "Z"(*(u8 *)addr) : "memory");
__asm__ __volatile__ ("dcbz 0, %0" : : "r"(addr) : "memory");
}
static inline void dcbi(void *addr)
{
__asm__ __volatile__ ("dcbi %y0" : : "Z"(*(u8 *)addr) : "memory");
__asm__ __volatile__ ("dcbi 0, %0" : : "r"(addr) : "memory");
}
static inline void dcbf(void *addr)
{
__asm__ __volatile__ ("dcbf %y0" : : "Z"(*(u8 *)addr) : "memory");
__asm__ __volatile__ ("dcbf 0, %0" : : "r"(addr) : "memory");
}
static inline void dcbst(void *addr)
{
__asm__ __volatile__ ("dcbst %y0" : : "Z"(*(u8 *)addr) : "memory");
__asm__ __volatile__ ("dcbst 0, %0" : : "r"(addr) : "memory");
}
#endif /* !__ASSEMBLY__ */
#endif /* __KERNEL__ */

3
arch/powerpc/kernel/Makefile
View File

@ -49,8 +49,7 @@ obj-y := cputable.o ptrace.o syscalls.o \
signal.o sysfs.o cacheinfo.o time.o \
prom.o traps.o setup-common.o \
udbg.o misc.o io.o misc_$(BITS).o \
of_platform.o prom_parse.o \
dma-common.o
of_platform.o prom_parse.o
obj-$(CONFIG_PPC64) += setup_64.o sys_ppc32.o \
signal_64.o ptrace32.o \
paca.o nvram_64.o firmware.o

17
arch/powerpc/kernel/dma-common.c
View File

@ -1,17 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Contains common dma routines for all powerpc platforms.
*
* Copyright (C) 2019 Shawn Anastasio.
*/
#include <linux/mm.h>
#include <linux/dma-noncoherent.h>
pgprot_t arch_dma_mmap_pgprot(struct device *dev, pgprot_t prot,
unsigned long attrs)
{
if (!dev_is_dma_coherent(dev))
return pgprot_noncached(prot);
return prot;
}

15
arch/powerpc/kvm/powerpc.c
View File

@ -50,6 +50,11 @@ int kvm_arch_vcpu_runnable(struct kvm_vcpu *v)
return !!(v->arch.pending_exceptions) || kvm_request_pending(v);
}
bool kvm_arch_dy_runnable(struct kvm_vcpu *vcpu)
{
return kvm_arch_vcpu_runnable(vcpu);
}
bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu)
{
return false;
@ -452,16 +457,6 @@ err_out:
return -EINVAL;
}
bool kvm_arch_has_vcpu_debugfs(void)
{
return false;
}
int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
{
return 0;
}
void kvm_arch_destroy_vm(struct kvm *kvm)
{
unsigned int i;

2
arch/riscv/configs/defconfig
View File

@ -54,6 +54,8 @@ CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_OF_PLATFORM=y
CONFIG_SERIAL_EARLYCON_RISCV_SBI=y
CONFIG_HVC_RISCV_SBI=y
CONFIG_HW_RANDOM=y
CONFIG_HW_RANDOM_VIRTIO=y
CONFIG_SPI=y
CONFIG_SPI_SIFIVE=y
# CONFIG_PTP_1588_CLOCK is not set

3
arch/riscv/configs/rv32_defconfig
View File

@ -34,6 +34,7 @@ CONFIG_PCIEPORTBUS=y
CONFIG_PCI_HOST_GENERIC=y
CONFIG_PCIE_XILINX=y
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_VIRTIO_BLK=y
CONFIG_BLK_DEV_SD=y
@ -53,6 +54,8 @@ CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_OF_PLATFORM=y
CONFIG_SERIAL_EARLYCON_RISCV_SBI=y
CONFIG_HVC_RISCV_SBI=y
CONFIG_HW_RANDOM=y
CONFIG_HW_RANDOM_VIRTIO=y
# CONFIG_PTP_1588_CLOCK is not set
CONFIG_DRM=y
CONFIG_DRM_RADEON=y

8
arch/riscv/include/asm/switch_to.h
View File

@ -16,7 +16,13 @@ extern void __fstate_restore(struct task_struct *restore_from);
static inline void __fstate_clean(struct pt_regs *regs)
{
regs->sstatus |= (regs->sstatus & ~(SR_FS)) | SR_FS_CLEAN;
regs->sstatus = (regs->sstatus & ~SR_FS) | SR_FS_CLEAN;
}
static inline void fstate_off(struct task_struct *task,
struct pt_regs *regs)
{
regs->sstatus = (regs->sstatus & ~SR_FS) | SR_FS_OFF;
}
static inline void fstate_save(struct task_struct *task,

11
arch/riscv/include/asm/tlbflush.h
View File

@ -53,10 +53,17 @@ static inline void remote_sfence_vma(struct cpumask *cmask, unsigned long start,
}
#define flush_tlb_all() sbi_remote_sfence_vma(NULL, 0, -1)
#define flush_tlb_page(vma, addr) flush_tlb_range(vma, addr, 0)
#define flush_tlb_range(vma, start, end) \
remote_sfence_vma(mm_cpumask((vma)->vm_mm), start, (end) - (start))
#define flush_tlb_mm(mm) \
static inline void flush_tlb_page(struct vm_area_struct *vma,
unsigned long addr)
{
flush_tlb_range(vma, addr, addr + PAGE_SIZE);
}
#define flush_tlb_mm(mm) \
remote_sfence_vma(mm_cpumask(mm), 0, -1)
#endif /* CONFIG_SMP */

11
arch/riscv/kernel/process.c
View File

@ -64,8 +64,14 @@ void start_thread(struct pt_regs *regs, unsigned long pc,
unsigned long sp)
{
regs->sstatus = SR_SPIE;
if (has_fpu)
if (has_fpu) {
regs->sstatus |= SR_FS_INITIAL;
/*
* Restore the initial value to the FP register
* before starting the user program.
*/
fstate_restore(current, regs);
}
regs->sepc = pc;
regs->sp = sp;
set_fs(USER_DS);
@ -75,10 +81,11 @@ void flush_thread(void)
{
#ifdef CONFIG_FPU
/*
* Reset FPU context
* Reset FPU state and context
* frm: round to nearest, ties to even (IEEE default)
* fflags: accrued exceptions cleared
*/
fstate_off(current, task_pt_regs(current));
memset(&current->thread.fstate, 0, sizeof(current->thread.fstate));
#endif
}

2
arch/riscv/lib/Makefile
View File

@ -5,5 +5,3 @@ lib-y += memset.o
lib-y += uaccess.o
lib-$(CONFIG_64BIT) += tishift.o
lib-$(CONFIG_32BIT) += udivdi3.o

6
arch/riscv/lib/delay.c
View File

@ -81,9 +81,13 @@ EXPORT_SYMBOL(__delay);
void udelay(unsigned long usecs)
{
u64 ucycles = (u64)usecs * lpj_fine * UDELAY_MULT;
u64 n;
if (unlikely(usecs > MAX_UDELAY_US)) {
__delay((u64)usecs * riscv_timebase / 1000000ULL);
n = (u64)usecs * riscv_timebase;
do_div(n, 1000000);
__delay(n);
return;
}

32
arch/riscv/lib/udivdi3.S
View File

@ -1,32 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2016-2017 Free Software Foundation, Inc.
*/
#include <linux/linkage.h>
ENTRY(__udivdi3)
mv a2, a1
mv a1, a0
li a0, -1
beqz a2, .L5
li a3, 1
bgeu a2, a1, .L2
.L1:
blez a2, .L2
slli a2, a2, 1
slli a3, a3, 1
bgtu a1, a2, .L1
.L2:
li a0, 0
.L3:
bltu a1, a2, .L4
sub a1, a1, a2
or a0, a0, a3
.L4:
srli a3, a3, 1
srli a2, a2, 1
bnez a3, .L3
.L5:
ret
ENDPROC(__udivdi3)

2
arch/s390/boot/ipl_parm.c
View File

@ -48,9 +48,7 @@ void store_ipl_parmblock(void)
{
int rc;
uv_set_shared(__pa(&ipl_block));
rc = __diag308(DIAG308_STORE, &ipl_block);
uv_remove_shared(__pa(&ipl_block));
if (rc == DIAG308_RC_OK &&
ipl_block.hdr.version <= IPL_MAX_SUPPORTED_VERSION)
ipl_block_valid = 1;

6
arch/s390/kernel/dumpstack.c
View File

@ -114,12 +114,8 @@ recursion_check:
* If it comes up a second time then there's something wrong going on:
* just break out and report an unknown stack type.
*/
if (*visit_mask & (1UL << info->type)) {
printk_deferred_once(KERN_WARNING
"WARNING: stack recursion on stack type %d\n",
info->type);
if (*visit_mask & (1UL << info->type))
goto unknown;
}
*visit_mask |= 1UL << info->type;
return 0;
unknown:

7
arch/s390/kernel/head64.S
View File

@ -60,12 +60,5 @@ ENTRY(startup_continue)
.align 16
.LPG1:
.Lpcmsk:.quad 0x0000000180000000
.L4malign:.quad 0xffffffffffc00000
.Lscan2g:.quad 0x80000000 + 0x20000 - 8 # 2GB + 128K - 8
.Lnop: .long 0x07000700
.Lparmaddr:
.quad PARMAREA
.align 64
.Ldw: .quad 0x0002000180000000,0x0000000000000000
.Laregs:.long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0

9
arch/s390/kernel/ipl.c
View File

@ -31,7 +31,6 @@
#include <asm/os_info.h>
#include <asm/sections.h>
#include <asm/boot_data.h>
#include <asm/uv.h>
#include "entry.h"
#define IPL_PARM_BLOCK_VERSION 0
@ -892,21 +891,15 @@ static void __reipl_run(void *unused)
{
switch (reipl_type) {
case IPL_TYPE_CCW:
uv_set_shared(__pa(reipl_block_ccw));
diag308(DIAG308_SET, reipl_block_ccw);
uv_remove_shared(__pa(reipl_block_ccw));
diag308(DIAG308_LOAD_CLEAR, NULL);
break;
case IPL_TYPE_FCP:
uv_set_shared(__pa(reipl_block_fcp));
diag308(DIAG308_SET, reipl_block_fcp);
uv_remove_shared(__pa(reipl_block_fcp));
diag308(DIAG308_LOAD_CLEAR, NULL);
break;
case IPL_TYPE_NSS:
uv_set_shared(__pa(reipl_block_nss));
diag308(DIAG308_SET, reipl_block_nss);
uv_remove_shared(__pa(reipl_block_nss));
diag308(DIAG308_LOAD_CLEAR, NULL);
break;
case IPL_TYPE_UNKNOWN:
@ -1176,9 +1169,7 @@ static struct kset *dump_kset;
static void diag308_dump(void *dump_block)
{
uv_set_shared(__pa(dump_block));
diag308(DIAG308_SET, dump_block);
uv_remove_shared(__pa(dump_block));
while (1) {
if (diag308(DIAG308_LOAD_NORMAL_DUMP, NULL) != 0x302)
break;

3
arch/s390/kernel/setup.c
View File

@ -1114,8 +1114,7 @@ void __init setup_arch(char **cmdline_p)
ROOT_DEV = Root_RAM0;
/* Is init_mm really needed? */
init_mm.start_code = PAGE_OFFSET;
init_mm.start_code = (unsigned long) _text;
init_mm.end_code = (unsigned long) _etext;
init_mm.end_data = (unsigned long) _edata;
init_mm.brk = (unsigned long) _end;

5
arch/s390/kernel/vdso.c
View File

@ -216,11 +216,6 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
if (!vdso_enabled)
return 0;
/*
* Only map the vdso for dynamically linked elf binaries.
*/
if (!uses_interp)
return 0;
vdso_pages = vdso64_pages;
#ifdef CONFIG_COMPAT_VDSO

10
arch/s390/kernel/vmlinux.lds.S
View File

@ -32,10 +32,9 @@ PHDRS {
SECTIONS
{
. = 0x100000;
_stext = .; /* Start of text section */
.text : {
/* Text and read-only data */
_text = .;
_stext = .; /* Start of text section */
_text = .; /* Text and read-only data */
HEAD_TEXT
TEXT_TEXT
SCHED_TEXT
@ -47,11 +46,10 @@ SECTIONS
*(.text.*_indirect_*)
*(.fixup)
*(.gnu.warning)
. = ALIGN(PAGE_SIZE);
_etext = .; /* End of text section */
} :text = 0x0700
. = ALIGN(PAGE_SIZE);
_etext = .; /* End of text section */
NOTES :text :note
.dummy : { *(.dummy) } :data

10
arch/s390/kvm/kvm-s390.c
View File

@ -2516,16 +2516,6 @@ out_err:
return rc;
}
bool kvm_arch_has_vcpu_debugfs(void)
{
return false;
}
int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
{
return 0;
}
void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
{
VCPU_EVENT(vcpu, 3, "%s", "free cpu");

12
arch/s390/mm/dump_pagetables.c
View File

@ -161,9 +161,9 @@ static void walk_pmd_level(struct seq_file *m, struct pg_state *st,
}
#endif
for (i = 0; i < PTRS_PER_PMD && addr < max_addr; i++) {
pmd = pmd_offset(pud, addr);
for (i = 0; i < PTRS_PER_PMD && addr < max_addr; i++, pmd++) {
st->current_address = addr;
pmd = pmd_offset(pud, addr);
if (!pmd_none(*pmd)) {
if (pmd_large(*pmd)) {
prot = pmd_val(*pmd) &
@ -192,9 +192,9 @@ static void walk_pud_level(struct seq_file *m, struct pg_state *st,
}
#endif
for (i = 0; i < PTRS_PER_PUD && addr < max_addr; i++) {
pud = pud_offset(p4d, addr);
for (i = 0; i < PTRS_PER_PUD && addr < max_addr; i++, pud++) {
st->current_address = addr;
pud = pud_offset(p4d, addr);
if (!pud_none(*pud))
if (pud_large(*pud)) {
prot = pud_val(*pud) &
@ -222,9 +222,9 @@ static void walk_p4d_level(struct seq_file *m, struct pg_state *st,
}
#endif
for (i = 0; i < PTRS_PER_P4D && addr < max_addr; i++) {
p4d = p4d_offset(pgd, addr);
for (i = 0; i < PTRS_PER_P4D && addr < max_addr; i++, p4d++) {
st->current_address = addr;
p4d = p4d_offset(pgd, addr);
if (!p4d_none(*p4d))
walk_pud_level(m, st, p4d, addr);
else

3
arch/s390/scripts/Makefile.chkbss
View File

@ -11,8 +11,7 @@ chkbss: $(addprefix $(obj)/, $(chkbss-files))
quiet_cmd_chkbss = CHKBSS $<
cmd_chkbss = \
if $(OBJDUMP) -h $< | grep -q "\.bss" && \
! $(OBJDUMP) -j .bss -w -h $< | awk 'END { if ($$3) exit 1 }'; then \
if ! $(OBJSIZE) --common $< | $(AWK) 'END { if ($$3) exit 1 }'; then \
echo "error: $< .bss section is not empty" >&2; exit 1; \
fi; \
touch $@;

5
arch/sh/kernel/disassemble.c
View File

@ -475,8 +475,6 @@ static void print_sh_insn(u32 memaddr, u16 insn)
printk("dbr");
break;
case FD_REG_N:
if (0)
goto d_reg_n;
case F_REG_N:
printk("fr%d", rn);
break;
@ -488,7 +486,7 @@ static void print_sh_insn(u32 memaddr, u16 insn)
printk("xd%d", rn & ~1);
break;
}
d_reg_n:
/* else, fall through */
case D_REG_N:
printk("dr%d", rn);
break;
@ -497,6 +495,7 @@ static void print_sh_insn(u32 memaddr, u16 insn)
printk("xd%d", rm & ~1);
break;
}
/* else, fall through */
case D_REG_M:
printk("dr%d", rm);
break;

1
arch/sh/kernel/hw_breakpoint.c
View File

@ -157,6 +157,7 @@ int arch_bp_generic_fields(int sh_len, int sh_type,
switch (sh_type) {
case SH_BREAKPOINT_READ:
*gen_type = HW_BREAKPOINT_R;
break;
case SH_BREAKPOINT_WRITE:
*gen_type = HW_BREAKPOINT_W;
break;

8
arch/x86/boot/string.c
View File

@ -37,6 +37,14 @@ int memcmp(const void *s1, const void *s2, size_t len)
return diff;
}
/*
* Clang may lower `memcmp == 0` to `bcmp == 0`.
*/
int bcmp(const void *s1, const void *s2, size_t len)
{
return memcmp(s1, s2, len);
}
int strcmp(const char *str1, const char *str2)
{
const unsigned char *s1 = (const unsigned char *)str1;

63
arch/x86/include/asm/bootparam_utils.h
View File

@ -18,6 +18,20 @@
* Note: efi_info is commonly left uninitialized, but that field has a
* private magic, so it is better to leave it unchanged.
*/
#define sizeof_mbr(type, member) ({ sizeof(((type *)0)->member); })
#define BOOT_PARAM_PRESERVE(struct_member) \
{ \
.start = offsetof(struct boot_params, struct_member), \
.len = sizeof_mbr(struct boot_params, struct_member), \
}
struct boot_params_to_save {
unsigned int start;
unsigned int len;
};
static void sanitize_boot_params(struct boot_params *boot_params)
{
/*
@ -35,21 +49,40 @@ static void sanitize_boot_params(struct boot_params *boot_params)
* problems again.
*/
if (boot_params->sentinel) {
/* fields in boot_params are left uninitialized, clear them */
boot_params->acpi_rsdp_addr = 0;
memset(&boot_params->ext_ramdisk_image, 0,
(char *)&boot_params->efi_info -
(char *)&boot_params->ext_ramdisk_image);
memset(&boot_params->kbd_status, 0,
(char *)&boot_params->hdr -
(char *)&boot_params->kbd_status);
memset(&boot_params->_pad7[0], 0,
(char *)&boot_params->edd_mbr_sig_buffer[0] -
(char *)&boot_params->_pad7[0]);
memset(&boot_params->_pad8[0], 0,
(char *)&boot_params->eddbuf[0] -
(char *)&boot_params->_pad8[0]);
memset(&boot_params->_pad9[0], 0, sizeof(boot_params->_pad9));
static struct boot_params scratch;
char *bp_base = (char *)boot_params;
char *save_base = (char *)&scratch;
int i;
const struct boot_params_to_save to_save[] = {
BOOT_PARAM_PRESERVE(screen_info),
BOOT_PARAM_PRESERVE(apm_bios_info),
BOOT_PARAM_PRESERVE(tboot_addr),
BOOT_PARAM_PRESERVE(ist_info),
BOOT_PARAM_PRESERVE(acpi_rsdp_addr),
BOOT_PARAM_PRESERVE(hd0_info),
BOOT_PARAM_PRESERVE(hd1_info),
BOOT_PARAM_PRESERVE(sys_desc_table),
BOOT_PARAM_PRESERVE(olpc_ofw_header),
BOOT_PARAM_PRESERVE(efi_info),
BOOT_PARAM_PRESERVE(alt_mem_k),
BOOT_PARAM_PRESERVE(scratch),
BOOT_PARAM_PRESERVE(e820_entries),
BOOT_PARAM_PRESERVE(eddbuf_entries),
BOOT_PARAM_PRESERVE(edd_mbr_sig_buf_entries),
BOOT_PARAM_PRESERVE(edd_mbr_sig_buffer),
BOOT_PARAM_PRESERVE(e820_table),
BOOT_PARAM_PRESERVE(eddbuf),
};
memset(&scratch, 0, sizeof(scratch));
for (i = 0; i < ARRAY_SIZE(to_save); i++) {
memcpy(save_base + to_save[i].start,
bp_base + to_save[i].start, to_save[i].len);
}
memcpy(boot_params, save_base, sizeof(*boot_params));
}
}

3
arch/x86/include/asm/kvm_host.h
View File

@ -35,6 +35,8 @@
#include <asm/kvm_vcpu_regs.h>
#include <asm/hyperv-tlfs.h>
#define __KVM_HAVE_ARCH_VCPU_DEBUGFS
#define KVM_MAX_VCPUS 288
#define KVM_SOFT_MAX_VCPUS 240
#define KVM_MAX_VCPU_ID 1023
@ -1175,6 +1177,7 @@ struct kvm_x86_ops {
int (*update_pi_irte)(struct kvm *kvm, unsigned int host_irq,
uint32_t guest_irq, bool set);
void (*apicv_post_state_restore)(struct kvm_vcpu *vcpu);
bool (*dy_apicv_has_pending_interrupt)(struct kvm_vcpu *vcpu);
int (*set_hv_timer)(struct kvm_vcpu *vcpu, u64 guest_deadline_tsc,
bool *expired);

3
arch/x86/kernel/apic/probe_32.c
View File

@ -184,7 +184,8 @@ void __init default_setup_apic_routing(void)
def_to_bigsmp = 0;
break;
}
/* If P4 and above fall through */
/* P4 and above */
/* fall through */
case X86_VENDOR_HYGON:
case X86_VENDOR_AMD:
def_to_bigsmp = 1;

1
arch/x86/kernel/cpu/mtrr/cyrix.c
View File

@ -98,6 +98,7 @@ cyrix_get_free_region(unsigned long base, unsigned long size, int replace_reg)
case 7:
if (size < 0x40)
break;
/* Else, fall through */
case 6:
case 5:
case 4:

39
arch/x86/kernel/cpu/umwait.c
View File

@ -17,6 +17,12 @@
*/
static u32 umwait_control_cached = UMWAIT_CTRL_VAL(100000, UMWAIT_C02_ENABLE);
/*
* Cache the original IA32_UMWAIT_CONTROL MSR value which is configured by
* hardware or BIOS before kernel boot.
*/
static u32 orig_umwait_control_cached __ro_after_init;
/*
* Serialize access to umwait_control_cached and IA32_UMWAIT_CONTROL MSR in
* the sysfs write functions.
@ -52,6 +58,23 @@ static int umwait_cpu_online(unsigned int cpu)
return 0;
}
/*
* The CPU hotplug callback sets the control MSR to the original control
* value.
*/
static int umwait_cpu_offline(unsigned int cpu)
{
/*
* This code is protected by the CPU hotplug already and
* orig_umwait_control_cached is never changed after it caches
* the original control MSR value in umwait_init(). So there
* is no race condition here.
*/
wrmsr(MSR_IA32_UMWAIT_CONTROL, orig_umwait_control_cached, 0);
return 0;
}
/*
* On resume, restore IA32_UMWAIT_CONTROL MSR on the boot processor which
* is the only active CPU at this time. The MSR is set up on the APs via the
@ -185,8 +208,22 @@ static int __init umwait_init(void)
if (!boot_cpu_has(X86_FEATURE_WAITPKG))
return -ENODEV;
/*
* Cache the original control MSR value before the control MSR is
* changed. This is the only place where orig_umwait_control_cached
* is modified.
*/
rdmsrl(MSR_IA32_UMWAIT_CONTROL, orig_umwait_control_cached);
ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "umwait:online",
umwait_cpu_online, NULL);
umwait_cpu_online, umwait_cpu_offline);
if (ret < 0) {
/*
* On failure, the control MSR on all CPUs has the
* original control value.
*/
return ret;
}
register_syscore_ops(&umwait_syscore_ops);

8
arch/x86/kernel/kvm.c
View File

@ -308,9 +308,6 @@ static notrace void kvm_guest_apic_eoi_write(u32 reg, u32 val)
static void kvm_guest_cpu_init(void)
{
if (!kvm_para_available())
return;
if (kvm_para_has_feature(KVM_FEATURE_ASYNC_PF) && kvmapf) {
u64 pa = slow_virt_to_phys(this_cpu_ptr(&apf_reason));
@ -625,9 +622,6 @@ static void __init kvm_guest_init(void)
{
int i;
if (!kvm_para_available())
return;
paravirt_ops_setup();
register_reboot_notifier(&kvm_pv_reboot_nb);
for (i = 0; i < KVM_TASK_SLEEP_HASHSIZE; i++)
@ -848,8 +842,6 @@ asm(
*/
void __init kvm_spinlock_init(void)
{
if (!kvm_para_available())
return;
/* Does host kernel support KVM_FEATURE_PV_UNHALT? */
if (!kvm_para_has_feature(KVM_FEATURE_PV_UNHALT))
return;

1
arch/x86/kernel/ptrace.c
View File

@ -201,6 +201,7 @@ static int set_segment_reg(struct task_struct *task,
case offsetof(struct user_regs_struct, ss):
if (unlikely(value == 0))
return -EIO;
/* Else, fall through */
default:
*pt_regs_access(task_pt_regs(task), offset) = value;

46
arch/x86/kvm/debugfs.c
View File

@ -8,11 +8,6 @@
#include <linux/debugfs.h>
#include "lapic.h"
bool kvm_arch_has_vcpu_debugfs(void)
{
return true;
}
static int vcpu_get_timer_advance_ns(void *data, u64 *val)
{
struct kvm_vcpu *vcpu = (struct kvm_vcpu *) data;
@ -48,37 +43,22 @@ static int vcpu_get_tsc_scaling_frac_bits(void *data, u64 *val)
DEFINE_SIMPLE_ATTRIBUTE(vcpu_tsc_scaling_frac_fops, vcpu_get_tsc_scaling_frac_bits, NULL, "%llu\n");
int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
void kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
{
struct dentry *ret;
debugfs_create_file("tsc-offset", 0444, vcpu->debugfs_dentry, vcpu,
&vcpu_tsc_offset_fops);
ret = debugfs_create_file("tsc-offset", 0444,
vcpu->debugfs_dentry,
vcpu, &vcpu_tsc_offset_fops);
if (!ret)
return -ENOMEM;
if (lapic_in_kernel(vcpu)) {
ret = debugfs_create_file("lapic_timer_advance_ns", 0444,
vcpu->debugfs_dentry,
vcpu, &vcpu_timer_advance_ns_fops);
if (!ret)
return -ENOMEM;
}
if (lapic_in_kernel(vcpu))
debugfs_create_file("lapic_timer_advance_ns", 0444,
vcpu->debugfs_dentry, vcpu,
&vcpu_timer_advance_ns_fops);
if (kvm_has_tsc_control) {
ret = debugfs_create_file("tsc-scaling-ratio", 0444,
vcpu->debugfs_dentry,
vcpu, &vcpu_tsc_scaling_fops);
if (!ret)
return -ENOMEM;
ret = debugfs_create_file("tsc-scaling-ratio-frac-bits", 0444,
vcpu->debugfs_dentry,
vcpu, &vcpu_tsc_scaling_frac_fops);
if (!ret)
return -ENOMEM;
debugfs_create_file("tsc-scaling-ratio", 0444,
vcpu->debugfs_dentry, vcpu,
&vcpu_tsc_scaling_fops);
debugfs_create_file("tsc-scaling-ratio-frac-bits", 0444,
vcpu->debugfs_dentry, vcpu,
&vcpu_tsc_scaling_frac_fops);
}
return 0;
}

8
arch/x86/kvm/lapic.c
View File

@ -1548,7 +1548,6 @@ static void kvm_apic_inject_pending_timer_irqs(struct kvm_lapic *apic)
static void apic_timer_expired(struct kvm_lapic *apic)
{
struct kvm_vcpu *vcpu = apic->vcpu;
struct swait_queue_head *q = &vcpu->wq;
struct kvm_timer *ktimer = &apic->lapic_timer;
if (atomic_read(&apic->lapic_timer.pending))
@ -1566,13 +1565,6 @@ static void apic_timer_expired(struct kvm_lapic *apic)
atomic_inc(&apic->lapic_timer.pending);
kvm_set_pending_timer(vcpu);
/*
* For x86, the atomic_inc() is serialized, thus
* using swait_active() is safe.
*/
if (swait_active(q))
swake_up_one(q);
}
static void start_sw_tscdeadline(struct kvm_lapic *apic)

6
arch/x86/kvm/svm.c
View File

@ -5190,6 +5190,11 @@ static void svm_deliver_avic_intr(struct kvm_vcpu *vcpu, int vec)
kvm_vcpu_wake_up(vcpu);
}
static bool svm_dy_apicv_has_pending_interrupt(struct kvm_vcpu *vcpu)
{
return false;
}
static void svm_ir_list_del(struct vcpu_svm *svm, struct amd_iommu_pi_data *pi)
{
unsigned long flags;
@ -7314,6 +7319,7 @@ static struct kvm_x86_ops svm_x86_ops __ro_after_init = {
.pmu_ops = &amd_pmu_ops,
.deliver_posted_interrupt = svm_deliver_avic_intr,
.dy_apicv_has_pending_interrupt = svm_dy_apicv_has_pending_interrupt,
.update_pi_irte = svm_update_pi_irte,
.setup_mce = svm_setup_mce,

6
arch/x86/kvm/vmx/vmx.c
View File

@ -6117,6 +6117,11 @@ static int vmx_sync_pir_to_irr(struct kvm_vcpu *vcpu)
return max_irr;
}
static bool vmx_dy_apicv_has_pending_interrupt(struct kvm_vcpu *vcpu)
{
return pi_test_on(vcpu_to_pi_desc(vcpu));
}
static void vmx_load_eoi_exitmap(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap)
{
if (!kvm_vcpu_apicv_active(vcpu))
@ -7726,6 +7731,7 @@ static struct kvm_x86_ops vmx_x86_ops __ro_after_init = {
.guest_apic_has_interrupt = vmx_guest_apic_has_interrupt,
.sync_pir_to_irr = vmx_sync_pir_to_irr,
.deliver_posted_interrupt = vmx_deliver_posted_interrupt,
.dy_apicv_has_pending_interrupt = vmx_dy_apicv_has_pending_interrupt,
.set_tss_addr = vmx_set_tss_addr,
.set_identity_map_addr = vmx_set_identity_map_addr,

16
arch/x86/kvm/x86.c
View File

@ -9698,6 +9698,22 @@ int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
return kvm_vcpu_running(vcpu) || kvm_vcpu_has_events(vcpu);
}
bool kvm_arch_dy_runnable(struct kvm_vcpu *vcpu)
{
if (READ_ONCE(vcpu->arch.pv.pv_unhalted))
return true;
if (kvm_test_request(KVM_REQ_NMI, vcpu) ||
kvm_test_request(KVM_REQ_SMI, vcpu) ||
kvm_test_request(KVM_REQ_EVENT, vcpu))
return true;
if (vcpu->arch.apicv_active && kvm_x86_ops->dy_apicv_has_pending_interrupt(vcpu))
return true;
return false;
}
bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu)
{
return vcpu->arch.preempted_in_kernel;

1
arch/x86/lib/cpu.c
View File

@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0-only
#include <linux/types.h>
#include <linux/export.h>
#include <asm/cpu.h>
unsigned int x86_family(unsigned int sig)
{

5
arch/x86/math-emu/errors.c
View File

@ -178,13 +178,15 @@ void FPU_printall(void)
for (i = 0; i < 8; i++) {
FPU_REG *r = &st(i);
u_char tagi = FPU_gettagi(i);
switch (tagi) {
case TAG_Empty:
continue;
break;
case TAG_Zero:
case TAG_Special:
/* Update tagi for the printk below */
tagi = FPU_Special(r);
/* fall through */
case TAG_Valid:
printk("st(%d) %c .%04lx %04lx %04lx %04lx e%+-6d ", i,
getsign(r) ? '-' : '+',
@ -198,7 +200,6 @@ void FPU_printall(void)
printk("Whoops! Error in errors.c: tag%d is %d ", i,
tagi);
continue;
break;
}
printk("%s\n", tag_desc[(int)(unsigned)tagi]);
}

2
arch/x86/math-emu/fpu_trig.c
View File

@ -1352,7 +1352,7 @@ static void fyl2xp1(FPU_REG *st0_ptr, u_char st0_tag)
case TW_Denormal:
if (denormal_operand() < 0)
return;
/* fall through */
case TAG_Zero:
case TAG_Valid:
setsign(st0_ptr, getsign(st0_ptr) ^ getsign(st1_ptr));

9
arch/x86/net/bpf_jit_comp.c
View File

@ -390,8 +390,9 @@ static int do_jit(struct bpf_prog *bpf_prog, int *addrs, u8 *image,
emit_prologue(&prog, bpf_prog->aux->stack_depth,
bpf_prog_was_classic(bpf_prog));
addrs[0] = prog - temp;
for (i = 0; i < insn_cnt; i++, insn++) {
for (i = 1; i <= insn_cnt; i++, insn++) {
const s32 imm32 = insn->imm;
u32 dst_reg = insn->dst_reg;
u32 src_reg = insn->src_reg;
@ -1105,7 +1106,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
extra_pass = true;
goto skip_init_addrs;
}
addrs = kmalloc_array(prog->len, sizeof(*addrs), GFP_KERNEL);
addrs = kmalloc_array(prog->len + 1, sizeof(*addrs), GFP_KERNEL);
if (!addrs) {
prog = orig_prog;
goto out_addrs;
@ -1115,7 +1116,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
* Before first pass, make a rough estimation of addrs[]
* each BPF instruction is translated to less than 64 bytes
*/
for (proglen = 0, i = 0; i < prog->len; i++) {
for (proglen = 0, i = 0; i <= prog->len; i++) {
proglen += 64;
addrs[i] = proglen;
}
@ -1180,7 +1181,7 @@ out_image:
if (!image || !prog->is_func || extra_pass) {
if (image)
bpf_prog_fill_jited_linfo(prog, addrs);
bpf_prog_fill_jited_linfo(prog, addrs + 1);
out_addrs:
kfree(addrs);
kfree(jit_data);

34
arch/x86/purgatory/Makefile
View File

@ -6,6 +6,9 @@ purgatory-y := purgatory.o stack.o setup-x86_$(BITS).o sha256.o entry64.o string
targets += $(purgatory-y)
PURGATORY_OBJS = $(addprefix $(obj)/,$(purgatory-y))
$(obj)/string.o: $(srctree)/arch/x86/boot/compressed/string.c FORCE
$(call if_changed_rule,cc_o_c)
$(obj)/sha256.o: $(srctree)/lib/sha256.c FORCE
$(call if_changed_rule,cc_o_c)
@ -17,11 +20,34 @@ KCOV_INSTRUMENT := n
# Default KBUILD_CFLAGS can have -pg option set when FTRACE is enabled. That
# in turn leaves some undefined symbols like __fentry__ in purgatory and not
# sure how to relocate those. Like kexec-tools, use custom flags.
# sure how to relocate those.
ifdef CONFIG_FUNCTION_TRACER
CFLAGS_REMOVE_sha256.o += $(CC_FLAGS_FTRACE)
CFLAGS_REMOVE_purgatory.o += $(CC_FLAGS_FTRACE)
CFLAGS_REMOVE_string.o += $(CC_FLAGS_FTRACE)
CFLAGS_REMOVE_kexec-purgatory.o += $(CC_FLAGS_FTRACE)
endif
KBUILD_CFLAGS := -fno-strict-aliasing -Wall -Wstrict-prototypes -fno-zero-initialized-in-bss -fno-builtin -ffreestanding -c -Os -mcmodel=large
KBUILD_CFLAGS += -m$(BITS)
KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
ifdef CONFIG_STACKPROTECTOR
CFLAGS_REMOVE_sha256.o += -fstack-protector
CFLAGS_REMOVE_purgatory.o += -fstack-protector
CFLAGS_REMOVE_string.o += -fstack-protector
CFLAGS_REMOVE_kexec-purgatory.o += -fstack-protector
endif
ifdef CONFIG_STACKPROTECTOR_STRONG
CFLAGS_REMOVE_sha256.o += -fstack-protector-strong
CFLAGS_REMOVE_purgatory.o += -fstack-protector-strong
CFLAGS_REMOVE_string.o += -fstack-protector-strong
CFLAGS_REMOVE_kexec-purgatory.o += -fstack-protector-strong
endif
ifdef CONFIG_RETPOLINE
CFLAGS_REMOVE_sha256.o += $(RETPOLINE_CFLAGS)
CFLAGS_REMOVE_purgatory.o += $(RETPOLINE_CFLAGS)
CFLAGS_REMOVE_string.o += $(RETPOLINE_CFLAGS)
CFLAGS_REMOVE_kexec-purgatory.o += $(RETPOLINE_CFLAGS)
endif
$(obj)/purgatory.ro: $(PURGATORY_OBJS) FORCE
$(call if_changed,ld)

6
arch/x86/purgatory/purgatory.c
View File

@ -68,3 +68,9 @@ void purgatory(void)
}
copy_backup_region();
}
/*
* Defined in order to reuse memcpy() and memset() from
* arch/x86/boot/compressed/string.c
*/
void warn(const char *msg) {}

23
arch/x86/purgatory/string.c
View File

@ -1,23 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Simple string functions.
*
* Copyright (C) 2014 Red Hat Inc.
*
* Author:
* Vivek Goyal <vgoyal@redhat.com>
*/
#include <linux/types.h>
#include "../boot/string.c"
void *memcpy(void *dst, const void *src, size_t len)
{
return __builtin_memcpy(dst, src, len);
}
void *memset(void *dst, int c, size_t len)
{
return __builtin_memset(dst, c, len);
}

1
arch/xtensa/kernel/setup.c
View File

@ -511,6 +511,7 @@ void cpu_reset(void)
"add %2, %2, %7\n\t"
"addi %0, %0, -1\n\t"
"bnez %0, 1b\n\t"
"isync\n\t"
/* Jump to identity mapping */
"jx %3\n"
"2:\n\t"

68
block/bfq-iosched.c
View File

@ -1924,12 +1924,13 @@ static void bfq_add_request(struct request *rq)
* confirmed no later than during the next
* I/O-plugging interval for bfqq.
*/
if (!bfq_bfqq_has_short_ttime(bfqq) &&
if (bfqd->last_completed_rq_bfqq &&
!bfq_bfqq_has_short_ttime(bfqq) &&
ktime_get_ns() - bfqd->last_completion <
200 * NSEC_PER_USEC) {
if (bfqd->last_completed_rq_bfqq != bfqq &&
bfqd->last_completed_rq_bfqq !=
bfqq->waker_bfqq) {
bfqd->last_completed_rq_bfqq !=
bfqq->waker_bfqq) {
/*
* First synchronization detected with
* a candidate waker queue, or with a
@ -2250,9 +2251,14 @@ static void bfq_request_merged(struct request_queue *q, struct request *req,
blk_rq_pos(container_of(rb_prev(&req->rb_node),
struct request, rb_node))) {
struct bfq_queue *bfqq = bfq_init_rq(req);
struct bfq_data *bfqd = bfqq->bfqd;
struct bfq_data *bfqd;
struct request *prev, *next_rq;
if (!bfqq)
return;
bfqd = bfqq->bfqd;
/* Reposition request in its sort_list */
elv_rb_del(&bfqq->sort_list, req);
elv_rb_add(&bfqq->sort_list, req);
@ -2299,6 +2305,9 @@ static void bfq_requests_merged(struct request_queue *q, struct request *rq,
struct bfq_queue *bfqq = bfq_init_rq(rq),
*next_bfqq = bfq_init_rq(next);
if (!bfqq)
return;
/*
* If next and rq belong to the same bfq_queue and next is older
* than rq, then reposition rq in the fifo (by substituting next
@ -4764,6 +4773,8 @@ static struct request *bfq_dispatch_request(struct blk_mq_hw_ctx *hctx)
*/
void bfq_put_queue(struct bfq_queue *bfqq)
{
struct bfq_queue *item;
struct hlist_node *n;
#ifdef CONFIG_BFQ_GROUP_IOSCHED
struct bfq_group *bfqg = bfqq_group(bfqq);
#endif
@ -4808,6 +4819,36 @@ void bfq_put_queue(struct bfq_queue *bfqq)
bfqq->bfqd->burst_size--;
}
/*
* bfqq does not exist any longer, so it cannot be woken by
* any other queue, and cannot wake any other queue. Then bfqq
* must be removed from the woken list of its possible waker
* queue, and all queues in the woken list of bfqq must stop
* having a waker queue. Strictly speaking, these updates
* should be performed when bfqq remains with no I/O source
* attached to it, which happens before bfqq gets freed. In
* particular, this happens when the last process associated
* with bfqq exits or gets associated with a different
* queue. However, both events lead to bfqq being freed soon,
* and dangling references would come out only after bfqq gets
* freed. So these updates are done here, as a simple and safe
* way to handle all cases.
*/
/* remove bfqq from woken list */
if (!hlist_unhashed(&bfqq->woken_list_node))
hlist_del_init(&bfqq->woken_list_node);
/* reset waker for all queues in woken list */
hlist_for_each_entry_safe(item, n, &bfqq->woken_list,
woken_list_node) {
item->waker_bfqq = NULL;
bfq_clear_bfqq_has_waker(item);
hlist_del_init(&item->woken_list_node);
}
if (bfqq->bfqd && bfqq->bfqd->last_completed_rq_bfqq == bfqq)
bfqq->bfqd->last_completed_rq_bfqq = NULL;
kmem_cache_free(bfq_pool, bfqq);
#ifdef CONFIG_BFQ_GROUP_IOSCHED
bfqg_and_blkg_put(bfqg);
@ -4835,9 +4876,6 @@ static void bfq_put_cooperator(struct bfq_queue *bfqq)
static void bfq_exit_bfqq(struct bfq_data *bfqd, struct bfq_queue *bfqq)
{
struct bfq_queue *item;
struct hlist_node *n;
if (bfqq == bfqd->in_service_queue) {
__bfq_bfqq_expire(bfqd, bfqq, BFQQE_BUDGET_TIMEOUT);
bfq_schedule_dispatch(bfqd);
@ -4847,18 +4885,6 @@ static void bfq_exit_bfqq(struct bfq_data *bfqd, struct bfq_queue *bfqq)
bfq_put_cooperator(bfqq);
/* remove bfqq from woken list */
if (!hlist_unhashed(&bfqq->woken_list_node))
hlist_del_init(&bfqq->woken_list_node);
/* reset waker for all queues in woken list */
hlist_for_each_entry_safe(item, n, &bfqq->woken_list,
woken_list_node) {
item->waker_bfqq = NULL;
bfq_clear_bfqq_has_waker(item);
hlist_del_init(&item->woken_list_node);
}
bfq_put_queue(bfqq); /* release process reference */
}
@ -5436,12 +5462,12 @@ static void bfq_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
spin_lock_irq(&bfqd->lock);
bfqq = bfq_init_rq(rq);
if (at_head || blk_rq_is_passthrough(rq)) {
if (!bfqq || at_head || blk_rq_is_passthrough(rq)) {
if (at_head)
list_add(&rq->queuelist, &bfqd->dispatch);
else
list_add_tail(&rq->queuelist, &bfqd->dispatch);
} else { /* bfqq is assumed to be non null here */
} else {
idle_timer_disabled = __bfq_insert_request(bfqd, rq);
/*
* Update bfqq, because, if a queue merge has occurred

10
block/blk-mq.c
View File

@ -1958,13 +1958,9 @@ static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio)
rq = blk_mq_get_request(q, bio, &data);
if (unlikely(!rq)) {
rq_qos_cleanup(q, bio);
cookie = BLK_QC_T_NONE;
if (bio->bi_opf & REQ_NOWAIT_INLINE)
cookie = BLK_QC_T_EAGAIN;
else if (bio->bi_opf & REQ_NOWAIT)
if (bio->bi_opf & REQ_NOWAIT)
bio_wouldblock_error(bio);
return cookie;
return BLK_QC_T_NONE;
}
trace_block_getrq(q, bio, bio->bi_opf);
@ -2666,8 +2662,6 @@ void blk_mq_release(struct request_queue *q)
struct blk_mq_hw_ctx *hctx, *next;
int i;
cancel_delayed_work_sync(&q->requeue_work);
queue_for_each_hw_ctx(q, hctx, i)
WARN_ON_ONCE(hctx && list_empty(&hctx->hctx_list));

3
block/blk-sysfs.c
View File

@ -892,6 +892,9 @@ static void __blk_release_queue(struct work_struct *work)
blk_free_queue_stats(q->stats);
if (queue_is_mq(q))
cancel_delayed_work_sync(&q->requeue_work);
blk_exit_queue(q);
blk_queue_free_zone_bitmaps(q);

21
drivers/ata/libata-scsi.c
View File

@ -1786,6 +1786,21 @@ nothing_to_do:
return 1;
}
static bool ata_check_nblocks(struct scsi_cmnd *scmd, u32 n_blocks)
{
struct request *rq = scmd->request;
u32 req_blocks;
if (!blk_rq_is_passthrough(rq))
return true;
req_blocks = blk_rq_bytes(rq) / scmd->device->sector_size;
if (n_blocks > req_blocks)
return false;
return true;
}
/**
* ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one
* @qc: Storage for translated ATA taskfile
@ -1830,6 +1845,8 @@ static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc)
scsi_10_lba_len(cdb, &block, &n_block);
if (cdb[1] & (1 << 3))
tf_flags |= ATA_TFLAG_FUA;
if (!ata_check_nblocks(scmd, n_block))
goto invalid_fld;
break;
case READ_6:
case WRITE_6:
@ -1844,6 +1861,8 @@ static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc)
*/
if (!n_block)
n_block = 256;
if (!ata_check_nblocks(scmd, n_block))
goto invalid_fld;
break;
case READ_16:
case WRITE_16:
@ -1854,6 +1873,8 @@ static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc)
scsi_16_lba_len(cdb, &block, &n_block);
if (cdb[1] & (1 << 3))
tf_flags |= ATA_TFLAG_FUA;
if (!ata_check_nblocks(scmd, n_block))
goto invalid_fld;
break;
default:
DPRINTK("no-byte command\n");

6
drivers/ata/libata-sff.c
View File

@ -658,6 +658,10 @@ static void ata_pio_sector(struct ata_queued_cmd *qc)
unsigned int offset;
unsigned char *buf;
if (!qc->cursg) {
qc->curbytes = qc->nbytes;
return;
}
if (qc->curbytes == qc->nbytes - qc->sect_size)
ap->hsm_task_state = HSM_ST_LAST;
@ -683,6 +687,8 @@ static void ata_pio_sector(struct ata_queued_cmd *qc)
if (qc->cursg_ofs == qc->cursg->length) {
qc->cursg = sg_next(qc->cursg);
if (!qc->cursg)
ap->hsm_task_state = HSM_ST_LAST;
qc->cursg_ofs = 0;
}
}

1
drivers/ata/pata_rb532_cf.c
View File

@ -158,7 +158,6 @@ static int rb532_pata_driver_probe(struct platform_device *pdev)
static int rb532_pata_driver_remove(struct platform_device *pdev)
{
struct ata_host *ah = platform_get_drvdata(pdev);
struct rb532_cf_info *info = ah->private_data;
ata_host_detach(ah);

8
drivers/atm/iphase.c
View File

@ -63,6 +63,7 @@
#include <asm/byteorder.h>
#include <linux/vmalloc.h>
#include <linux/jiffies.h>
#include <linux/nospec.h>
#include "iphase.h"
#include "suni.h"
#define swap_byte_order(x) (((x & 0xff) << 8) | ((x & 0xff00) >> 8))
@ -2760,8 +2761,11 @@ static int ia_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg)
}
if (copy_from_user(&ia_cmds, arg, sizeof ia_cmds)) return -EFAULT;
board = ia_cmds.status;
if ((board < 0) || (board > iadev_count))
board = 0;
if ((board < 0) || (board > iadev_count))
board = 0;
board = array_index_nospec(board, iadev_count + 1);
iadev = ia_dev[board];
switch (ia_cmds.cmd) {
case MEMDUMP:

5
drivers/auxdisplay/Kconfig
View File

@ -448,6 +448,11 @@ config PANEL_BOOT_MESSAGE
choice
prompt "Backlight initial state"
default CHARLCD_BL_FLASH
---help---
Select the initial backlight state on boot or module load.
Previously, there was no option for this: the backlight flashed
briefly on init. Now you can also turn it off/on.
config CHARLCD_BL_OFF
bool "Off"

2
drivers/auxdisplay/charlcd.c
View File

@ -20,7 +20,7 @@
#include <generated/utsrelease.h>
#include <misc/charlcd.h>
#include "charlcd.h"
#define LCD_MINOR 156

5
include/misc/charlcd.h → drivers/auxdisplay/charlcd.h
View File

@ -6,6 +6,9 @@
* Copyright (C) 2016-2017 Glider bvba
*/
#ifndef _CHARLCD_H
#define _CHARLCD_H
struct charlcd {
const struct charlcd_ops *ops;
const unsigned char *char_conv; /* Optional */
@ -37,3 +40,5 @@ int charlcd_register(struct charlcd *lcd);
int charlcd_unregister(struct charlcd *lcd);
void charlcd_poke(struct charlcd *lcd);
#endif /* CHARLCD_H */

3
drivers/auxdisplay/hd44780.c
View File

@ -14,8 +14,7 @@
#include <linux/property.h>
#include <linux/slab.h>
#include <misc/charlcd.h>
#include "charlcd.h"
enum hd44780_pin {
/* Order does matter due to writing to GPIO array subsets! */

4
drivers/auxdisplay/panel.c
View File

@ -55,7 +55,7 @@
#include <linux/io.h>
#include <linux/uaccess.h>
#include <misc/charlcd.h>
#include "charlcd.h"
#define KEYPAD_MINOR 185
@ -1617,6 +1617,8 @@ static void panel_attach(struct parport *port)
return;
err_lcd_unreg:
if (scan_timer.function)
del_timer_sync(&scan_timer);
if (lcd.enabled)
charlcd_unregister(lcd.charlcd);
err_unreg_device:

53
drivers/base/core.c
View File

@ -1823,12 +1823,63 @@ static inline struct kobject *get_glue_dir(struct device *dev)
*/
static void cleanup_glue_dir(struct device *dev, struct kobject *glue_dir)
{
unsigned int ref;
/* see if we live in a "glue" directory */
if (!live_in_glue_dir(glue_dir, dev))
return;
mutex_lock(&gdp_mutex);
if (!kobject_has_children(glue_dir))
/**
* There is a race condition between removing glue directory
* and adding a new device under the glue directory.
*
* CPU1: CPU2:
*
* device_add()
* get_device_parent()
* class_dir_create_and_add()
* kobject_add_internal()
* create_dir() // create glue_dir
*
* device_add()
* get_device_parent()
* kobject_get() // get glue_dir
*
* device_del()
* cleanup_glue_dir()
* kobject_del(glue_dir)
*
* kobject_add()
* kobject_add_internal()
* create_dir() // in glue_dir
* sysfs_create_dir_ns()
* kernfs_create_dir_ns(sd)
*
* sysfs_remove_dir() // glue_dir->sd=NULL
* sysfs_put() // free glue_dir->sd
*
* // sd is freed
* kernfs_new_node(sd)
* kernfs_get(glue_dir)
* kernfs_add_one()
* kernfs_put()
*
* Before CPU1 remove last child device under glue dir, if CPU2 add
* a new device under glue dir, the glue_dir kobject reference count
* will be increase to 2 in kobject_get(k). And CPU2 has been called
* kernfs_create_dir_ns(). Meanwhile, CPU1 call sysfs_remove_dir()
* and sysfs_put(). This result in glue_dir->sd is freed.
*
* Then the CPU2 will see a stale "empty" but still potentially used
* glue dir around in kernfs_new_node().
*
* In order to avoid this happening, we also should make sure that
* kernfs_node for glue_dir is released in CPU1 only when refcount
* for glue_dir kobj is 1.
*/
ref = kref_read(&glue_dir->kref);
if (!kobject_has_children(glue_dir) && !--ref)
kobject_del(glue_dir);
kobject_put(glue_dir);
mutex_unlock(&gdp_mutex);

9
drivers/base/platform.c
View File

@ -157,8 +157,13 @@ int platform_get_irq(struct platform_device *dev, unsigned int num)
* the device will only expose one IRQ, and this fallback
* allows a common code path across either kind of resource.
*/
if (num == 0 && has_acpi_companion(&dev->dev))
return acpi_dev_gpio_irq_get(ACPI_COMPANION(&dev->dev), num);
if (num == 0 && has_acpi_companion(&dev->dev)) {
int ret = acpi_dev_gpio_irq_get(ACPI_COMPANION(&dev->dev), num);
/* Our callers expect -ENXIO for missing IRQs. */
if (ret >= 0 || ret == -EPROBE_DEFER)
return ret;
}
return -ENXIO;
#endif

2
drivers/base/regmap/Kconfig
View File

@ -44,7 +44,7 @@ config REGMAP_IRQ
config REGMAP_SOUNDWIRE
tristate
depends on SOUNDWIRE_BUS
depends on SOUNDWIRE
config REGMAP_SCCB
tristate

13
drivers/block/aoe/aoedev.c
View File

@ -323,10 +323,14 @@ flush(const char __user *str, size_t cnt, int exiting)
}
flush_scheduled_work();
/* pass one: without sleeping, do aoedev_downdev */
/* pass one: do aoedev_downdev, which might sleep */
restart1:
spin_lock_irqsave(&devlist_lock, flags);
for (d = devlist; d; d = d->next) {
spin_lock(&d->lock);
if (d->flags & DEVFL_TKILL)
goto cont;
if (exiting) {
/* unconditionally take each device down */
} else if (specified) {
@ -338,8 +342,11 @@ flush(const char __user *str, size_t cnt, int exiting)
|| d->ref)
goto cont;
spin_unlock(&d->lock);
spin_unlock_irqrestore(&devlist_lock, flags);
aoedev_downdev(d);
d->flags |= DEVFL_TKILL;
goto restart1;
cont:
spin_unlock(&d->lock);
}
@ -348,7 +355,7 @@ cont:
/* pass two: call freedev, which might sleep,
* for aoedevs marked with DEVFL_TKILL
*/
restart:
restart2:
spin_lock_irqsave(&devlist_lock, flags);
for (d = devlist; d; d = d->next) {
spin_lock(&d->lock);
@ -357,7 +364,7 @@ restart:
spin_unlock(&d->lock);
spin_unlock_irqrestore(&devlist_lock, flags);
freedev(d);
goto restart;
goto restart2;
}
spin_unlock(&d->lock);
}

2
drivers/block/drbd/drbd_main.c
View File

@ -322,6 +322,8 @@ static int drbd_thread_setup(void *arg)
thi->name[0],
resource->name);
allow_kernel_signal(DRBD_SIGKILL);
allow_kernel_signal(SIGXCPU);
restart:
retval = thi->function(thi);

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