Commit Graph

39540 Commits

Author SHA1 Message Date
Paul Walmsley 3cdb015788 dt-bindings: riscv: resolve 'make dt_binding_check' warnings
Rob pointed out that one of the examples in the RISC-V 'cpus' YAML
schema results in warnings from 'make dt_binding_check'.  Fix these.

While here, make the whitespace in the second example consistent
with the first example.

Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Rob Herring <robh@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org> # for fixing the dtc warnings
2019-06-26 10:28:53 -07:00
Linus Torvalds b7b8a44f3a Char/Misc driver fixes for 5.2-rc6
Here are a number of small driver fixes for 5.2-rc6
 
 Nothing major, just fixes for reported issues:
   - soundwire fixes
   - thunderbolt fixes
   - MAINTAINERS update for fpga maintainer change
   - binder bugfix
   - habanalabs 64bit pointer fix
   - documentation updates
 
 All of these have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are a number of small driver fixes for 5.2-rc6

  Nothing major, just fixes for reported issues:
   - soundwire fixes
   - thunderbolt fixes
   - MAINTAINERS update for fpga maintainer change
   - binder bugfix
   - habanalabs 64bit pointer fix
   - documentation updates

  All of these have been in linux-next with no reported issues"

* tag 'char-misc-5.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  habanalabs: use u64_to_user_ptr() for reading user pointers
  doc: fix documentation about UIO_MEM_LOGICAL using
  MAINTAINERS / Documentation: Thorsten Scherer is the successor of Gavin Schenk
  docs: fb: Add TER16x32 to the available font names
  MAINTAINERS: fpga: hand off maintainership to Moritz
  thunderbolt: Implement CIO reset correctly for Titan Ridge
  binder: fix possible UAF when freeing buffer
  thunderbolt: Make sure device runtime resume completes before taking domain lock
  soundwire: intel: set dai min and max channels correctly
  soundwire: stream: fix bad unlock balance
  soundwire: stream: fix out of boundary access on port properties
2019-06-21 10:18:16 -07:00
Linus Torvalds b3e978337b Fixes for ARM and x86, plus selftest patches and nicer structs
for nested state save/restore.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "Fixes for ARM and x86, plus selftest patches and nicer structs for
  nested state save/restore"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: nVMX: reorganize initial steps of vmx_set_nested_state
  KVM: arm/arm64: Fix emulated ptimer irq injection
  tests: kvm: Check for a kernel warning
  kvm: tests: Sort tests in the Makefile alphabetically
  KVM: x86/mmu: Allocate PAE root array when using SVM's 32-bit NPT
  KVM: x86: Modify struct kvm_nested_state to have explicit fields for data
  KVM: fix typo in documentation
  KVM: nVMX: use correct clean fields when copying from eVMCS
  KVM: arm/arm64: vgic: Fix kvm_device leak in vgic_its_destroy
  KVM: arm64: Filter out invalid core register IDs in KVM_GET_REG_LIST
  KVM: arm64: Implement vq_present() as a macro
2019-06-20 13:50:37 -07:00
Yang Yingliang 6ad805b82d doc: fix documentation about UIO_MEM_LOGICAL using
After commit d4fc5069a3 ("mm: switch s_mem and slab_cache in struct page")
page->mapping will be re-used by slab allocations and page->mapping->host
will be used in balance_dirty_pages_ratelimited() as an inode member but
it's not an inode in fact and leads an oops.

[  159.906493] Unable to handle kernel paging request at virtual address ffff200012d90be8
[  159.908029] Mem abort info:
[  159.908552]   ESR = 0x96000007
[  159.909138]   Exception class = DABT (current EL), IL = 32 bits
[  159.910155]   SET = 0, FnV = 0
[  159.910690]   EA = 0, S1PTW = 0
[  159.911241] Data abort info:
[  159.911846]   ISV = 0, ISS = 0x00000007
[  159.912567]   CM = 0, WnR = 0
[  159.913105] swapper pgtable: 4k pages, 48-bit VAs, pgdp=0000000042acd000
[  159.914269] [ffff200012d90be8] pgd=000000043ffff003, pud=000000043fffe003, pmd=000000043fffa003, pte=0000000000000000
[  159.916280] Internal error: Oops: 96000007 [#1] SMP
[  159.917195] Dumping ftrace buffer:
[  159.917845]    (ftrace buffer empty)
[  159.918521] Modules linked in: uio_dev(OE)
[  159.919276] CPU: 1 PID: 295 Comm: uio_test Tainted: G           OE     5.2.0-rc4+ #46
[  159.920859] Hardware name: linux,dummy-virt (DT)
[  159.921815] pstate: 60000005 (nZCv daif -PAN -UAO)
[  159.922809] pc : balance_dirty_pages_ratelimited+0x68/0xc38
[  159.923965] lr : fault_dirty_shared_page.isra.8+0xe4/0x100
[  159.925134] sp : ffff800368a77ae0
[  159.925824] x29: ffff800368a77ae0 x28: 1ffff0006d14ce1a
[  159.926906] x27: ffff800368a670d0 x26: ffff800368a67120
[  159.927985] x25: 1ffff0006d10f5fe x24: ffff200012d90be8
[  159.929089] x23: ffff200013732000 x22: ffff80036ec03200
[  159.930172] x21: ffff200012d90bc0 x20: 1fffe400025b217d
[  159.931253] x19: ffff80036ec03200 x18: 0000000000000000
[  159.932348] x17: 0000000000000000 x16: 0ffffe0000010208
[  159.933439] x15: 0000000000000000 x14: 0000000000000000
[  159.934518] x13: 0000000000000000 x12: 0000000000000000
[  159.935596] x11: 1fffefc001b452c0 x10: ffff0fc001b452c0
[  159.936697] x9 : dfff200000000000 x8 : dfff200000000001
[  159.937781] x7 : ffff7e000da29607 x6 : ffff0fc001b452c1
[  159.938859] x5 : ffff0fc001b452c1 x4 : ffff0fc001b452c1
[  159.939944] x3 : ffff200010523ad4 x2 : 1fffe400026e659b
[  159.941065] x1 : dfff200000000000 x0 : ffff200013732cd8
[  159.942205] Call trace:
[  159.942732]  balance_dirty_pages_ratelimited+0x68/0xc38
[  159.943797]  fault_dirty_shared_page.isra.8+0xe4/0x100
[  159.944867]  do_fault+0x608/0x1250
[  159.945571]  __handle_mm_fault+0x93c/0xfb8
[  159.946412]  handle_mm_fault+0x1c0/0x360
[  159.947224]  do_page_fault+0x358/0x8d0
[  159.947993]  do_translation_fault+0xf8/0x124
[  159.948884]  do_mem_abort+0x70/0x190
[  159.949624]  el0_da+0x24/0x28

According another commit 5e901d0b15 ("scsi: qedi: Fix bad pte call trace
when iscsiuio is stopped."), using kmalloc also cause other problem.

But the documentation about UIO_MEM_LOGICAL allows using kmalloc(), remove
and don't allow using kmalloc() in documentation.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 19:31:21 +02:00
Gavin Schenk 75d7627f49 MAINTAINERS / Documentation: Thorsten Scherer is the successor of Gavin Schenk
Due to new challenges in my life I can no longer take care of SIOX.
Thorsten takes over my SIOX tasks.

Signed-off-by: Gavin Schenk <g.schenk@eckelmann.de>
Acked-by: Thorsten Scherer <t.scherer@eckelmann.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 19:31:21 +02:00
Takashi Iwai fce677d7e8 docs: fb: Add TER16x32 to the available font names
The new font is available since recently.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 19:21:48 +02:00
Liran Alon 6ca00dfafd KVM: x86: Modify struct kvm_nested_state to have explicit fields for data
Improve the KVM_{GET,SET}_NESTED_STATE structs by detailing the format
of VMX nested state data in a struct.

In order to avoid changing the ioctl values of
KVM_{GET,SET}_NESTED_STATE, there is a need to preserve
sizeof(struct kvm_nested_state). This is done by defining the data
struct as "data.vmx[0]". It was the most elegant way I found to
preserve struct size while still keeping struct readable and easy to
maintain. It does have a misfortunate side-effect that now it has to be
accessed as "data.vmx[0]" rather than just "data.vmx".

Because we are already modifying these structs, I also modified the
following:
* Define the "format" field values as macros.
* Rename vmcs_pa to vmcs12_pa for better readability.

Signed-off-by: Liran Alon <liran.alon@oracle.com>
[Remove SVM stubs, add KVM_STATE_NESTED_VMX_VMCS12_SIZE. - Paolo]
Reviewed-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-06-19 16:11:52 +02:00
Dennis Restle 76e3bcdb61 KVM: fix typo in documentation
The documentation mentions a non-existing capability KVM_CAP_USER_MEM.s
The right name is KVM_CAP_USER_MEMORY.

Signed-off-by: Dennis Restle <derestle@htwg-konstanz.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-06-18 17:46:45 +02:00
Linus Torvalds da0f382029 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:
 "Lots of bug fixes here:

   1) Out of bounds access in __bpf_skc_lookup, from Lorenz Bauer.

   2) Fix rate reporting in cfg80211_calculate_bitrate_he(), from John
      Crispin.

   3) Use after free in psock backlog workqueue, from John Fastabend.

   4) Fix source port matching in fdb peer flow rule of mlx5, from Raed
      Salem.

   5) Use atomic_inc_not_zero() in fl6_sock_lookup(), from Eric Dumazet.

   6) Network header needs to be set for packet redirect in nfp, from
      John Hurley.

   7) Fix udp zerocopy refcnt, from Willem de Bruijn.

   8) Don't assume linear buffers in vxlan and geneve error handlers,
      from Stefano Brivio.

   9) Fix TOS matching in mlxsw, from Jiri Pirko.

  10) More SCTP cookie memory leak fixes, from Neil Horman.

  11) Fix VLAN filtering in rtl8366, from Linus Walluij.

  12) Various TCP SACK payload size and fragmentation memory limit fixes
      from Eric Dumazet.

  13) Use after free in pneigh_get_next(), also from Eric Dumazet.

  14) LAPB control block leak fix from Jeremy Sowden"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (145 commits)
  lapb: fixed leak of control-blocks.
  tipc: purge deferredq list for each grp member in tipc_group_delete
  ax25: fix inconsistent lock state in ax25_destroy_timer
  neigh: fix use-after-free read in pneigh_get_next
  tcp: fix compile error if !CONFIG_SYSCTL
  hv_sock: Suppress bogus "may be used uninitialized" warnings
  be2net: Fix number of Rx queues used for flow hashing
  net: handle 802.1P vlan 0 packets properly
  tcp: enforce tcp_min_snd_mss in tcp_mtu_probing()
  tcp: add tcp_min_snd_mss sysctl
  tcp: tcp_fragment() should apply sane memory limits
  tcp: limit payload size of sacked skbs
  Revert "net: phylink: set the autoneg state in phylink_phy_change"
  bpf: fix nested bpf tracepoints with per-cpu data
  bpf: Fix out of bounds memory access in bpf_sk_storage
  vsock/virtio: set SOCK_DONE on peer shutdown
  net: dsa: rtl8366: Fix up VLAN filtering
  net: phylink: set the autoneg state in phylink_phy_change
  net: add high_order_alloc_disable sysctl/static key
  tcp: add tcp_tx_skb_cache sysctl
  ...
2019-06-17 15:55:34 -07:00
Linus Torvalds eb7c825bf7 RISC-V patches for v5.2-rc6
This tag contains fixes, defconfig, and DT data changes for the v5.2-rc
 series.  The fixes are relatively straightforward:
 
 - Addition of a TLB fence in the vmalloc_fault path, so the CPU doesn't
   enter an infinite page fault loop;
 - Readdition of the pm_power_off export, so device drivers that
   reassign it can now be built as modules;
 - A udelay() fix for RV32, fixing a miscomputation of the delay time;
 - Removal of deprecated smp_mb__*() barriers.
 
 The tag also adds initial DT data infrastructure for arch/riscv, along
 with initial data for the SiFive FU540-C000 SoC and the corresponding
 HiFive Unleashed board.
 
 We also update the RV64 defconfig to include some core drivers for the
 FU540 in the build.
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Merge tag 'riscv-for-v5.2/fixes-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V fixes from Paul Walmsley:
 "This contains fixes, defconfig, and DT data changes for the v5.2-rc
  series.

  The fixes are relatively straightforward:

   - Addition of a TLB fence in the vmalloc_fault path, so the CPU
     doesn't enter an infinite page fault loop

   - Readdition of the pm_power_off export, so device drivers that
     reassign it can now be built as modules

   - A udelay() fix for RV32, fixing a miscomputation of the delay time

   - Removal of deprecated smp_mb__*() barriers

  This also adds initial DT data infrastructure for arch/riscv, along
  with initial data for the SiFive FU540-C000 SoC and the corresponding
  HiFive Unleashed board.

  We also update the RV64 defconfig to include some core drivers for the
  FU540 in the build"

* tag 'riscv-for-v5.2/fixes-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: remove unused barrier defines
  riscv: mm: synchronize MMU after pte change
  riscv: dts: add initial board data for the SiFive HiFive Unleashed
  riscv: dts: add initial support for the SiFive FU540-C000 SoC
  dt-bindings: riscv: convert cpu binding to json-schema
  dt-bindings: riscv: sifive: add YAML documentation for the SiFive FU540
  arch: riscv: add support for building DTB files from DT source data
  riscv: Fix udelay in RV32.
  riscv: export pm_power_off again
  RISC-V: defconfig: enable clocks, serial console
2019-06-17 10:34:03 -07:00
Paul Walmsley 4fd669a8c4 dt-bindings: riscv: convert cpu binding to json-schema
At Rob's request, we're starting to migrate our DT binding
documentation to json-schema YAML format.  Start by converting our cpu
binding documentation.  While doing so, document more properties and
nodes.  This includes adding binding documentation support for the E51
and U54 CPU cores ("harts") that are present on this SoC.  These cores
are described in:

    https://static.dev.sifive.com/FU540-C000-v1.0.pdf

This cpus.yaml file is intended to be a starting point and to
evolve over time.  It passes dt-doc-validate as of the yaml-bindings
commit 4c79d42e9216.

This patch was originally based on the ARM json-schema binding
documentation as added by commit 672951cbd1 ("dt-bindings: arm: Convert
cpu binding to json-schema").

Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-riscv@lists.infradead.org
2019-06-17 02:03:58 -07:00
Paul Walmsley c7af559817 dt-bindings: riscv: sifive: add YAML documentation for the SiFive FU540
Add YAML DT binding documentation for the SiFive FU540 SoC.  This
SoC is documented at:

    https://static.dev.sifive.com/FU540-C000-v1.0.pdf

Passes dt-doc-validate, as of yaml-bindings commit 4c79d42e9216.

Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: devicetree@vger.kernel.org
Cc: linux-riscv@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
2019-06-17 02:03:52 -07:00
Eric Dumazet 5f3e2bf008 tcp: add tcp_min_snd_mss sysctl
Some TCP peers announce a very small MSS option in their SYN and/or
SYN/ACK messages.

This forces the stack to send packets with a very high network/cpu
overhead.

Linux has enforced a minimal value of 48. Since this value includes
the size of TCP options, and that the options can consume up to 40
bytes, this means that each segment can include only 8 bytes of payload.

In some cases, it can be useful to increase the minimal value
to a saner value.

We still let the default to 48 (TCP_MIN_SND_MSS), for compatibility
reasons.

Note that TCP_MAXSEG socket option enforces a minimal value
of (TCP_MIN_MSS). David Miller increased this minimal value
in commit c39508d6f1 ("tcp: Make TCP_MAXSEG minimum more correct.")
from 64 to 88.

We might in the future merge TCP_MIN_SND_MSS and TCP_MIN_MSS.

CVE-2019-11479 -- tcp mss hardcoded to 48

Signed-off-by: Eric Dumazet <edumazet@google.com>
Suggested-by: Jonathan Looney <jtl@netflix.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Tyler Hicks <tyhicks@canonical.com>
Cc: Bruce Curtis <brucec@netflix.com>
Cc: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-15 18:47:31 -07:00
Linus Torvalds 0011572c88 Merge branch 'for-5.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup fixes from Tejun Heo:
 "This has an unusually high density of tricky fixes:

   - task_get_css() could deadlock when it races against a dying cgroup.

   - cgroup.procs didn't list thread group leaders with live threads.

     This could mislead readers to think that a cgroup is empty when
     it's not. Fixed by making PROCS iterator include dead tasks. I made
     a couple mistakes making this change and this pull request contains
     a couple follow-up patches.

   - When cpusets run out of online cpus, it updates cpusmasks of member
     tasks in bizarre ways. Joel improved the behavior significantly"

* 'for-5.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cpuset: restore sanity to cpuset_cpus_allowed_fallback()
  cgroup: Fix css_task_iter_advance_css_set() cset skip condition
  cgroup: css_task_iter_skip()'d iterators must be advanced before accessed
  cgroup: Include dying leaders with live threads in PROCS iterations
  cgroup: Implement css_task_iter_skip()
  cgroup: Call cgroup_release() before __exit_signal()
  docs cgroups: add another example size for hugetlb
  cgroup: Use css_tryget() instead of css_tryget_online() in task_get_css()
2019-06-14 17:46:14 -10:00
Eric Dumazet ede61ca474 tcp: add tcp_rx_skb_cache sysctl
Instead of relying on rps_needed, it is safer to use a separate
static key, since we do not want to enable TCP rx_skb_cache
by default. This feature can cause huge increase of memory
usage on hosts with millions of sockets.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-14 20:18:28 -07:00
Reinhard Speyerer 36815b416f qmi_wwan: extend permitted QMAP mux_id value range
Permit mux_id values up to 254 to be used in qmimux_register_device()
for compatibility with ip(8) and the rmnet driver.

Fixes: c6adf77953 ("net: usb: qmi_wwan: add qmap mux protocol support")
Cc: Daniele Palmas <dnlplm@gmail.com>
Signed-off-by: Reinhard Speyerer <rspmn@arcor.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-14 19:05:58 -07:00
Linus Torvalds 7b10315128 for-linus-20190614
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Merge tag 'for-linus-20190614' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:

 - Remove references to old schedulers for the scheduler switching and
   blkio controller documentation (Andreas)

 - Kill duplicate check for report zone for null_blk (Chaitanya)

 - Two bcache fixes (Coly)

 - Ensure that mq-deadline is selected if zoned block device is enabled,
   as we need that to support them (Damien)

 - Fix io_uring memory leak (Eric)

 - ps3vram fallout from LBDAF removal (Geert)

 - Redundant blk-mq debugfs debugfs_create return check cleanup (Greg)

 - Extend NOPLM quirk for ST1000LM024 drives (Hans)

 - Remove error path warning that can now trigger after the queue
   removal/addition fixes (Ming)

* tag 'for-linus-20190614' of git://git.kernel.dk/linux-block:
  block/ps3vram: Use %llu to format sector_t after LBDAF removal
  libata: Extend quirks for the ST1000LM024 drives with NOLPM quirk
  bcache: only set BCACHE_DEV_WB_RUNNING when cached device attached
  bcache: fix stack corruption by PRECEDING_KEY()
  blk-mq: remove WARN_ON(!q->elevator) from blk_mq_sched_free_requests
  blkio-controller.txt: Remove references to CFQ
  block/switching-sched.txt: Update to blk-mq schedulers
  null_blk: remove duplicate check for report zone
  blk-mq: no need to check return value of debugfs_create functions
  io_uring: fix memory leak of UNIX domain socket inode
  block: force select mq-deadline for zoned block devices
2019-06-14 15:41:18 -10:00
Linus Torvalds 72a20cee5d arm64 fixes for -rc5
- Fix broken SVE ptrace API when running in a big-endian configuration
 
 - Fix performance regression due to off-by-one in TLBI range checking
 
 - Fix build regression when using Clang
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "Here are some arm64 fixes for -rc5.

  The only non-trivial change (in terms of the diffstat) is fixing our
  SVE ptrace API for big-endian machines, but the majority of this is
  actually the addition of much-needed comments and updates to the
  documentation to try to avoid this mess biting us again in future.

  There are still a couple of small things on the horizon, but nothing
  major at this point.

  Summary:

   - Fix broken SVE ptrace API when running in a big-endian configuration

   - Fix performance regression due to off-by-one in TLBI range checking

   - Fix build regression when using Clang"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64/sve: Fix missing SVE/FPSIMD endianness conversions
  arm64: tlbflush: Ensure start/end of address range are aligned to stride
  arm64: Don't unconditionally add -Wno-psabi to KBUILD_CFLAGS
2019-06-14 06:16:47 -10:00
Dave Martin 41040cf7c5 arm64/sve: Fix missing SVE/FPSIMD endianness conversions
The in-memory representation of SVE and FPSIMD registers is
different: the FPSIMD V-registers are stored as single 128-bit
host-endian values, whereas SVE registers are stored in an
endianness-invariant byte order.

This means that the two representations differ when running on a
big-endian host.  But we blindly copy data from one representation
to another when converting between the two, resulting in the
register contents being unintentionally byteswapped in certain
situations.  Currently this can be triggered by the first SVE
instruction after a syscall, for example (though the potential
trigger points may vary in future).

So, fix the conversion functions fpsimd_to_sve(), sve_to_fpsimd()
and sve_sync_from_fpsimd_zeropad() to swab where appropriate.

There is no common swahl128() or swab128() that we could use here.
Maybe it would be worth making this generic, but for now add a
simple local hack.

Since the byte order differences are exposed in ABI, also clarify
the documentation.

Cc: Alex Bennée <alex.bennee@linaro.org>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Alan Hayward <alan.hayward@arm.com>
Cc: Julien Grall <julien.grall@arm.com>
Fixes: bc0ee47603 ("arm64/sve: Core task context handling")
Fixes: 8cd969d28f ("arm64/sve: Signal handling support")
Fixes: 43d4da2c45 ("arm64/sve: ptrace and ELF coredump support")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
[will: Fix typos in comments and docs spotted by Julien]
Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-06-13 10:07:19 +01:00
Andreas Herrmann fb5772cbfe blkio-controller.txt: Remove references to CFQ
CFQ is gone. No need anymore to document its "proportional weight time
based division of disk policy".

Signed-off-by: Andreas Herrmann <aherrmann@suse.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-06-13 03:00:30 -06:00
Andreas Herrmann 8614b0085d block/switching-sched.txt: Update to blk-mq schedulers
Remove references to CFQ and legacy block layer which are gone.
Update example with what's available under blk-mq.

Signed-off-by: Andreas Herrmann <aherrmann@suse.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-06-13 03:00:30 -06:00
Masanari Iida bb2e05e0c8 linux-next: DOC: RDS: Fix a typo in rds.txt
This patch fixes a spelling typo in rds.txt

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-12 09:56:29 -07:00
David S. Miller 62f42a114b linux-can-fixes-for-5.2-20190607
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Merge tag 'linux-can-fixes-for-5.2-20190607' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2019-06-07

this is a pull reqeust of 9 patches for net/master.

The first patch is by Alexander Dahl and removes a duplicate menu entry from
the Kconfig. The next patch by Joakim Zhang fixes the timeout in the flexcan
driver when setting small bit rates. Anssi Hannula's patch for the xilinx_can
driver fixes the bittiming_const for CAN FD core. The two patches by Sean
Nyekjaer bring mcp25625 to the existing mcp251x driver. The patch by Eugen
Hristev implements an errata for the m_can driver. YueHaibing's patch fixes the
error handling ing can_init(). The patch by Fabio Estevam for the flexcan
driver removes an unneeded registration message during flexcan_probe(). And the
last patch is by Willem de Bruijn and adds the missing purging the  socket
error queue on sock destruct.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-09 19:44:01 -07:00
David S. Miller 38e406f600 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Daniel Borkmann says:

====================
pull-request: bpf 2019-06-07

The following pull-request contains BPF updates for your *net* tree.

The main changes are:

1) Fix several bugs in riscv64 JIT code emission which forgot to clear high
   32-bits for alu32 ops, from Björn and Luke with selftests covering all
   relevant BPF alu ops from Björn and Jiong.

2) Two fixes for UDP BPF reuseport that avoid calling the program in case of
   __udp6_lib_err and UDP GRO which broke reuseport_select_sock() assumption
   that skb->data is pointing to transport header, from Martin.

3) Two fixes for BPF sockmap: a use-after-free from sleep in psock's backlog
   workqueue, and a missing restore of sk_write_space when psock gets dropped,
   from Jakub and John.

4) Fix unconnected UDP sendmsg hook API which is insufficient as-is since it
   breaks standard applications like DNS if reverse NAT is not performed upon
   receive, from Daniel.

5) Fix an out-of-bounds read in __bpf_skc_lookup which in case of AF_INET6
   fails to verify that the length of the tuple is long enough, from Lorenz.

6) Fix libbpf's libbpf__probe_raw_btf to return an fd instead of 0/1 (for
   {un,}successful probe) as that is expected to be propagated as an fd to
   load_sk_storage_btf() and thus closing the wrong descriptor otherwise,
   from Michal.

7) Fix bpftool's JSON output for the case when a lookup fails, from Krzesimir.

8) Minor misc fixes in docs, samples and selftests, from various others.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-07 14:46:47 -07:00
Sean Nyekjaer 0df82dcd55 dt-bindings: can: mcp251x: add mcp25625 support
Fully compatible with mcp2515, the mcp25625 have integrated transceiver.

This patch add the mcp25625 to the device tree bindings documentation.

Signed-off-by: Sean Nyekjaer <sean@geanix.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-06-07 23:03:53 +02:00
Linus Torvalds 5d6b501fe5 overlayfs fixes for 5.2-rc4
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Merge tag 'ovl-fixes-5.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs

Pull overlayfs fixes from Miklos Szeredi:
 "Here's one fix for a class of bugs triggered by syzcaller, and one
  that makes xfstests fail less"

* tag 'ovl-fixes-5.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
  ovl: doc: add non-standard corner cases
  ovl: detect overlapping layers
  ovl: support the FS_IOC_FS[SG]ETXATTR ioctls
2019-06-06 12:31:15 -07:00
Chris Down 9852ae3fe5 mm, memcg: consider subtrees in memory.events
memory.stat and other files already consider subtrees in their output, and
we should too in order to not present an inconsistent interface.

The current situation is fairly confusing, because people interacting with
cgroups expect hierarchical behaviour in the vein of memory.stat,
cgroup.events, and other files.  For example, this causes confusion when
debugging reclaim events under low, as currently these always read "0" at
non-leaf memcg nodes, which frequently causes people to misdiagnose breach
behaviour.  The same confusion applies to other counters in this file when
debugging issues.

Aggregation is done at write time instead of at read-time since these
counters aren't hot (unlike memory.stat which is per-page, so it does it
at read time), and it makes sense to bundle this with the file
notifications.

After this patch, events are propagated up the hierarchy:

    [root@ktst ~]# cat /sys/fs/cgroup/system.slice/memory.events
    low 0
    high 0
    max 0
    oom 0
    oom_kill 0
    [root@ktst ~]# systemd-run -p MemoryMax=1 true
    Running as unit: run-r251162a189fb4562b9dabfdc9b0422f5.service
    [root@ktst ~]# cat /sys/fs/cgroup/system.slice/memory.events
    low 0
    high 0
    max 7
    oom 1
    oom_kill 1

As this is a change in behaviour, this can be reverted to the old
behaviour by mounting with the `memory_localevents' flag set.  However, we
use the new behaviour by default as there's a lack of evidence that there
are any current users of memory.events that would find this change
undesirable.

akpm: this is a behaviour change, so Cc:stable.  THis is so that
forthcoming distros which use cgroup v2 are more likely to pick up the
revised behaviour.

Link: http://lkml.kernel.org/r/20190208224419.GA24772@chrisdown.name
Signed-off-by: Chris Down <chris@chrisdown.name>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Roman Gushchin <guro@fb.com>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-06-01 15:51:31 -07:00
Randy Dunlap 91173c6e18 mm: fix Documentation/vm/hmm.rst Sphinx warnings
Fix Sphinx warnings in Documentation/vm/hmm.rst by using "::" notation and
inserting a blank line.  Also add a missing ';'.

  Documentation/vm/hmm.rst:292: WARNING: Unexpected indentation.
  Documentation/vm/hmm.rst:300: WARNING: Unexpected indentation.

Link: http://lkml.kernel.org/r/c5995359-7c82-4e47-c7be-b58a4dda0953@infradead.org
Fixes: 023a019a9b ("mm/hmm: add default fault flags to avoid the need to pre-fill pfns arrays")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Jérôme Glisse <jglisse@redhat.com>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-06-01 15:51:31 -07:00
Linus Torvalds e49c8547fb USB fixes for 5.2-rc3
Here are some tiny USB fixes for a number of reported issues for
 5.2-rc3.
 
 Nothing huge here, just a small collection of xhci and other driver bugs
 that syzbot has been finding in some drivers.  There is also a usbip fix
 and a fix for the usbip fix in here :)
 
 All have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-5.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some tiny USB fixes for a number of reported issues for
  5.2-rc3.

  Nothing huge here, just a small collection of xhci and other driver
  bugs that syzbot has been finding in some drivers. There is also a
  usbip fix and a fix for the usbip fix in here :)

  All have been in linux-next with no reported issues"

* tag 'usb-5.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usbip: usbip_host: fix stub_dev lock context imbalance regression
  media: smsusb: better handle optional alignment
  xhci: Use %zu for printing size_t type
  xhci: Convert xhci_handshake() to use readl_poll_timeout_atomic()
  xhci: Fix immediate data transfer if buffer is already DMA mapped
  usb: xhci: avoid null pointer deref when bos field is NULL
  usb: xhci: Fix a potential null pointer dereference in xhci_debugfs_create_endpoint()
  xhci: update bounce buffer with correct sg num
  media: usb: siano: Fix false-positive "uninitialized variable" warning
  USB: rio500: update Documentation
  USB: rio500: simplify locking
  USB: rio500: fix memory leak in close after disconnect
  USB: rio500: refuse more than one device at a time
  usbip: usbip_host: fix BUG: sleeping function called from invalid context
  USB: sisusbvga: fix oops in error path of sisusb_probe
  USB: Add LPM quirk for Surface Dock GigE adapter
  media: usb: siano: Fix general protection fault in smsusb
  usb: mtu3: fix up undefined reference to usb_debug_root
  USB: Fix slab-out-of-bounds write in usb_get_bos_descriptor
2019-05-31 08:16:31 -07:00
Miklos Szeredi 5d3211b651 ovl: doc: add non-standard corner cases
While most corner cases have already been dealt with, some remain and
should be documented.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2019-05-31 11:27:25 +02:00
Linus Torvalds 036e343109 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Fix OOPS during nf_tables rule dump, from Florian Westphal.

 2) Use after free in ip_vs_in, from Yue Haibing.

 3) Fix various kTLS bugs (NULL deref during device removal resync,
    netdev notification ignoring, etc.) From Jakub Kicinski.

 4) Fix ipv6 redirects with VRF, from David Ahern.

 5) Memory leak fix in igmpv3_del_delrec(), from Eric Dumazet.

 6) Missing memory allocation failure check in ip6_ra_control(), from
    Gen Zhang. And likewise fix ip_ra_control().

 7) TX clean budget logic error in aquantia, from Igor Russkikh.

 8) SKB leak in llc_build_and_send_ui_pkt(), from Eric Dumazet.

 9) Double frees in mlx5, from Parav Pandit.

10) Fix lost MAC address in r8169 during PCI D3, from Heiner Kallweit.

11) Fix botched register access in mvpp2, from Antoine Tenart.

12) Use after free in napi_gro_frags(), from Eric Dumazet.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (89 commits)
  net: correct zerocopy refcnt with udp MSG_MORE
  ethtool: Check for vlan etype or vlan tci when parsing flow_rule
  net: don't clear sock->sk early to avoid trouble in strparser
  net-gro: fix use-after-free read in napi_gro_frags()
  net: dsa: tag_8021q: Create a stable binary format
  net: dsa: tag_8021q: Change order of rx_vid setup
  net: mvpp2: fix bad MVPP2_TXQ_SCHED_TOKEN_CNTR_REG queue value
  ipv4: tcp_input: fix stack out of bounds when parsing TCP options.
  mlxsw: spectrum: Prevent force of 56G
  mlxsw: spectrum_acl: Avoid warning after identical rules insertion
  net: dsa: mv88e6xxx: fix handling of upper half of STATS_TYPE_PORT
  r8169: fix MAC address being lost in PCI D3
  net: core: support XDP generic on stacked devices.
  netvsc: unshare skb in VF rx handler
  udp: Avoid post-GRO UDP checksum recalculation
  net: phy: dp83867: Set up RGMII TX delay
  net: phy: dp83867: do not call config_init twice
  net: phy: dp83867: increase SGMII autoneg timer duration
  net: phy: dp83867: fix speed 10 in sgmii mode
  net: phy: marvell10g: report if the PHY fails to boot firmware
  ...
2019-05-30 21:11:22 -07:00
Odin Ugedal 8cfeb385e9 docs cgroups: add another example size for hugetlb
Add another example to clarify that HugePages smaller than 1MB will
be displayed using "KB", with an uppercased K (eg. 20KB), and not the
normal SI prefix kilo (small k).

Because of a misunderstanding/copy-paste error inside runc
(see https://github.com/opencontainers/runc/pull/2065), it tried
accessing the cgroup control file of a 64kB HugePage using
"hugetlb.64kB._____" instead of the correct "hugetlb.64KB._____".

Adding a new example will make it clear how sizes smaller than 1MB are
handled.

Signed-off-by: Odin Ugedal <odin@ugedal.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2019-05-30 14:02:43 -07:00
Linus Torvalds bec7550cca The Sphinx 2.0 release contained a few incompatible API changes that broke
our extensions and, thus, the documentation build in general.  Who knew
 that those deprecation warnings it was outputting actually meant we should
 change something?  This set of fixes makes the build work again with
 Sphinx 2.0 and eliminates the warnings for 1.8.  As part of that, we also
 need a few fixes to the docs for places where the new Sphinx is more
 strict.
 
 It is a bit late in the cycle for this kind of change, but it does fix
 problems that people are experiencing now.
 
 There has been some talk of raising the minimum version of Sphinx we
 support.  I don't want to do that abruptly, though, so these changes add
 some glue to continue to support versions back to 1.3.  We will be adding
 some infrastructure soon to nudge users of old versions forward, with the
 idea of maybe increasing our minimum version (and removing this glue)
 sometime in the future.
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Merge tag 'docs-5.2-fixes2' of git://git.lwn.net/linux

Pull documentation fixes from Jonathan Corbet:
 "The Sphinx 2.0 release contained a few incompatible API changes that
  broke our extensions and, thus, the documentation build in general.
  Who knew that those deprecation warnings it was outputting actually
  meant we should change something? This set of fixes makes the build
  work again with Sphinx 2.0 and eliminates the warnings for 1.8. As
  part of that, we also need a few fixes to the docs for places where
  the new Sphinx is more strict.

  It is a bit late in the cycle for this kind of change, but it does fix
  problems that people are experiencing now.

  There has been some talk of raising the minimum version of Sphinx we
  support. I don't want to do that abruptly, though, so these changes
  add some glue to continue to support versions back to 1.3. We will be
  adding some infrastructure soon to nudge users of old versions
  forward, with the idea of maybe increasing our minimum version (and
  removing this glue) sometime in the future"

* tag 'docs-5.2-fixes2' of git://git.lwn.net/linux:
  drm/i915: Maintain consistent documentation subsection ordering
  scripts/sphinx-pre-install: make it handle Sphinx versions
  docs: Fix conf.py for Sphinx 2.0
  docs: fix multiple doc build warnings in enumeration.rst
  lib/list_sort: fix kerneldoc build error
  docs: fix numaperf.rst and add it to the doc tree
  doc: Cope with the deprecation of AutoReporter
  doc: Cope with Sphinx logging deprecations
2019-05-29 14:36:41 -07:00
Florian Fainelli a6cd0d2d49 Documentation: net-sysfs: Remove duplicate PHY device documentation
Both sysfs-bus-mdio and sysfs-class-net-phydev contain the same
duplication information. There is not currently any MDIO bus specific
attribute, but there are PHY device (struct phy_device) specific
attributes. Use the more precise description from sysfs-bus-mdio and
carry that over to sysfs-class-net-phydev.

Fixes: 86f22d04df ("net: sysfs: Document PHY device sysfs attributes")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-28 17:26:44 -07:00
Linus Torvalds e7bd3e248b Devicetree fixes for 5.2:
- Update checkpatch.pl to use DT vendor-prefixes.yaml
 
 - Fix DT binding references to files converted to DT schema
 
 - Clean-up Arm CPU binding examples to match schema
 
 - Add Sifive block versioning scheme documentation
 
 - Pass binding directory base to validation tools for reference lookups
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Merge tag 'devicetree-fixes-for-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull Devicetree fixes from Rob Herring:

 - Update checkpatch.pl to use DT vendor-prefixes.yaml

 - Fix DT binding references to files converted to DT schema

 - Clean-up Arm CPU binding examples to match schema

 - Add Sifive block versioning scheme documentation

 - Pass binding directory base to validation tools for reference lookups

* tag 'devicetree-fixes-for-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  checkpatch.pl: Update DT vendor prefix check
  dt: bindings: mtd: replace references to nand.txt with nand-controller.yaml
  dt-bindings: interrupt-controller: arm,gic: Fix schema errors in example
  dt-bindings: arm: Clean up CPU binding examples
  dt: fix refs that were renamed to json with the same file name
  dt-bindings: Pass binding directory to validation tools
  dt-bindings: sifive: describe sifive-blocks versioning
2019-05-24 15:16:46 -07:00
Linus Torvalds 0a72ef8990 Second round of arm64 fixes for -rc2
- Fix incorrect LDADD instruction encoding in our disassembly macros
 
 - Disable the broken ARM64_PSEUDO_NMI support for now
 
 - Add workaround for Cortex-A76 CPU erratum #1463225
 
 - Handle Cortex-A76/Neoverse-N1 erratum #1418040 w/ existing workaround
 
 - Fix IORT build failure if IOMMU_SUPPORT=n
 
 - Fix place-relative module relocation range checking and its
   interaction with KASLR
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull more arm64 fixes from Will Deacon:

 - Fix incorrect LDADD instruction encoding in our disassembly macros

 - Disable the broken ARM64_PSEUDO_NMI support for now

 - Add workaround for Cortex-A76 CPU erratum #1463225

 - Handle Cortex-A76/Neoverse-N1 erratum #1418040 w/ existing workaround

 - Fix IORT build failure if IOMMU_SUPPORT=n

 - Fix place-relative module relocation range checking and its
   interaction with KASLR

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: insn: Add BUILD_BUG_ON() for invalid masks
  arm64: insn: Fix ldadd instruction encoding
  arm64: Kconfig: Make ARM64_PSEUDO_NMI depend on BROKEN for now
  arm64: Handle erratum 1418040 as a superset of erratum 1188873
  arm64/module: deal with ambiguity in PRELxx relocation ranges
  ACPI/IORT: Fix build error when IOMMU_SUPPORT is disabled
  arm64/kernel: kaslr: reduce module randomization range to 2 GB
  arm64: errata: Add workaround for Cortex-A76 erratum #1463225
  arm64: Remove useless message during oops
2019-05-24 11:03:26 -07:00
Jonathan Corbet 3bc8088464 docs: Fix conf.py for Sphinx 2.0
Our version check in Documentation/conf.py never envisioned a world where
Sphinx moved beyond 1.x.  Now that the unthinkable has happened, fix our
version check to handle higher version numbers correctly.

Cc: stable@vger.kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-24 09:09:32 -06:00
Jonathan Corbet bbb30909e0 docs: fix multiple doc build warnings in enumeration.rst
The conversion of acpi/enumeration.txt to RST included one markup error,
leading to many warnings like:

  .../firmware-guide/acpi/enumeration.rst:430: WARNING: Unexpected indentation.

Add the missing colon and create some peace.

Fixes: c24bc66e81 ("Documentation: ACPI: move enumeration.txt to firmware-guide/acpi and convert to reST")
Cc: Changbin Du <changbin.du@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-23 09:27:39 -06:00
Jonathan Corbet 8867f6109b docs: fix numaperf.rst and add it to the doc tree
Commit 13bac55ef7 ("doc/mm: New documentation for memory performance")
added numaperf.rst, but did not add it to the TOC tree.  There was also an
incorrectly marked literal block leading to this warning sequence:

  numaperf.rst:24: WARNING: Unexpected indentation.
  numaperf.rst:24: WARNING: Inline substitution_reference start-string without end-string.
  numaperf.rst:25: WARNING: Block quote ends without a blank line; unexpected unindent.

Fix the block and add the file to the document tree.

Fixes: 13bac55ef7 ("doc/mm: New documentation for memory performance")
Cc: Keith Busch <keith.busch@intel.com>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-23 09:27:05 -06:00
Jonathan Corbet 2404dad1f6 doc: Cope with the deprecation of AutoReporter
AutoReporter is going away; recent versions of sphinx emit a warning like:

  Documentation/sphinx/kerneldoc.py:125:
      RemovedInSphinx20Warning: AutodocReporter is now deprecated.
      Use sphinx.util.docutils.switch_source_input() instead.

Make the switch.  But switch_source_input() only showed up in 1.7, so we
have to do ugly version checks to keep things working in older versions.

Cc: stable@vger.kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-23 09:23:11 -06:00
Jonathan Corbet 096ea522e8 doc: Cope with Sphinx logging deprecations
Recent versions of sphinx will emit messages like:

  Documentation/sphinx/kerneldoc.py:103:
     RemovedInSphinx20Warning: app.warning() is now deprecated.
     Use sphinx.util.logging instead.

Switch to sphinx.util.logging to make this unsightly message go away.
Alas, that interface was only added in version 1.6, so we have to add a
version check to keep things working with older sphinxes.

Cc: stable@vger.kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-05-23 09:22:00 -06:00
Linus Torvalds 61686afe1f A handful of fixes for a docs build problem, along with catching the
spdxcheck.py script up with the current state of affairs.
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Merge tag 'docs-5.2-fixes' of git://git.lwn.net/linux

Pull documentation fixes from Jonathan Corbet:
 "A handful of fixes for a docs build problem, along with catching the
  spdxcheck.py script up with the current state of affairs"

* tag 'docs-5.2-fixes' of git://git.lwn.net/linux:
  Documentation: kdump: fix minor typo
  scripts/spdxcheck.py: Add dual license subdirectory
  scripts/spdxcheck.py: Fix path to deprecated licenses
  counter: fix Documentation build error due to incorrect source file name
2019-05-23 08:13:07 -07:00
Marc Zyngier a5325089bd arm64: Handle erratum 1418040 as a superset of erratum 1188873
We already mitigate erratum 1188873 affecting Cortex-A76 and
Neoverse-N1 r0p0 to r2p0. It turns out that revisions r0p0 to
r3p1 of the same cores are affected by erratum 1418040, which
has the same workaround as 1188873.

Let's expand the range of affected revisions to match 1418040,
and repaint all occurences of 1188873 to 1418040. Whilst we're
there, do a bit of reformating in silicon-errata.txt and drop
a now unnecessary dependency on ARM_ARCH_TIMER_OOL_WORKAROUND.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-05-23 15:40:30 +01:00
Will Deacon 969f5ea627 arm64: errata: Add workaround for Cortex-A76 erratum #1463225
Revisions of the Cortex-A76 CPU prior to r4p0 are affected by an erratum
that can prevent interrupts from being taken when single-stepping.

This patch implements a software workaround to prevent userspace from
effectively being able to disable interrupts.

Cc: <stable@vger.kernel.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-05-23 11:38:10 +01:00
Jakub Kicinski f42c104f2e Documentation: add TLS offload documentation
Describe existing kernel TLS offload (added back in Linux 4.19) -
the mechanism, the expected behavior and the notable corner cases.

This documentation is mostly targeting hardware vendors who want
to implement offload, to ensure consistency between implementations.

v2:
 - add emphasis around TLS_SW/TLS_HW/TLS_HW_RECORD;
 - remove mentions of ongoing work (Boris);
 - split the flow of data in SW vs. HW cases in TX overview
   (Boris);
 - call out which fields are updated by the device and which
   are filled by the stack (Boris);
 - move error handling into it's own section (Boris);
 - add more words about fallback (Boris);
 - note that checksum validation is required (Alexei);
 - note that drivers shouldn't pay attention to the TLS
   device features.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Dave Watson <davejwatson@fb.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-22 12:18:20 -07:00
Jakub Kicinski f3c0f3c6c2 Documentation: tls: RSTify the ktls documentation
Convert the TLS doc to RST.  Use C code blocks for the code
samples, and mark hyperlinks.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Dave Watson <davejwatson@fb.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-22 12:18:20 -07:00
Jakub Kicinski b0d8d4363e Documentation: net: move device drivers docs to a submenu
Some of the device drivers have really long document titles
making the networking table of contents hard to look through.
Place vendor drivers under a submenu.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Dave Watson <davejwatson@fb.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-22 12:18:20 -07:00
Linus Torvalds f75b6f303b Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Clear up some recent tipc regressions because of registration
    ordering. Fix from Junwei Hu.

 2) tipc's TLV_SET() can read past the end of the supplied buffer during
    the copy. From Chris Packham.

 3) ptp example program doesn't match the kernel, from Richard Cochran.

 4) Outgoing message type fix in qrtr, from Bjorn Andersson.

 5) Flow control regression in stmmac, from Tan Tee Min.

 6) Fix inband autonegotiation in phylink, from Russell King.

 7) Fix sk_bound_dev_if handling in rawv6_bind(), from Mike Manning.

 8) Fix usbnet crash after disconnect, from Kloetzke Jan.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (21 commits)
  usbnet: fix kernel crash after disconnect
  selftests: fib_rule_tests: use pre-defined DEV_ADDR
  net-next: net: Fix typos in ip-sysctl.txt
  ipv6: Consider sk_bound_dev_if when binding a raw socket to an address
  net: phylink: ensure inband AN works correctly
  usbnet: ipheth: fix racing condition
  net: stmmac: dma channel control register need to be init first
  net: stmmac: fix ethtool flow control not able to get/set
  net: qrtr: Fix message type of outgoing packets
  networking: : fix typos in code comments
  ptp: Fix example program to match kernel.
  fddi: fix typos in code comments
  selftests: fib_rule_tests: enable forwarding before ipv4 from/iif test
  selftests: fib_rule_tests: fix local IPv4 address typo
  tipc: Avoid copying bytes beyond the supplied data
  2/2] net: xilinx_emaclite: use readx_poll_timeout() in mdio wait function
  1/2] net: axienet: use readx_poll_timeout() in mdio wait function
  vlan: Mark expected switch fall-through
  macvlan: Mark expected switch fall-through
  net/mlx4_en: ethtool, Remove unsupported SFP EEPROM high pages query
  ...
2019-05-22 08:28:16 -07:00
Kamal Dasu a5f2246fb9 dt: bindings: mtd: replace references to nand.txt with nand-controller.yaml
nand-controller.yaml replaced nand.txt however the references to it were
not updated. This change updates these references wherever it appears in
bindings documentation.

Fixes: 212e496935 ("dt-bindings: mtd: Add YAML schemas for the generic NAND options")
Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2019-05-22 09:08:20 -05:00
Rob Herring 8d665693c2 dt-bindings: interrupt-controller: arm,gic: Fix schema errors in example
Validating the examples against the schema have a few errors:

arm,gic.example.dt.yaml: 'ranges' does not match any of the regexes: '^v2m@[0-9a-f]+$', 'pinctrl-[0-9]+'
arm,gic.example.dt.yaml: #address-cells:0:0: 2 is not one of [0, 1]
arm,gic.example.dt.yaml: #size-cells:0:0: 1 was expected

'ranges' is valid, but missing from the schema, so add it. The reg
addresses and sizes don't match the schema requirements and the example
template. We could just override the example template to use 64-bit
addresses, but there's not really any value showing that in the example.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2019-05-22 09:06:11 -05:00