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  1. 07 Dec, 2017 9 commits
    • Dave Airlie's avatar
      Merge tag 'drm-intel-fixes-2017-12-07' of... · 96980844
      Dave Airlie authored 
      Merge tag 'drm-intel-fixes-2017-12-07' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

- Fix for fd.o bug #103997 CNL eDP + HDMI causing a machine hard hang (James)
- Fix to allow suspending with a wedged GPU to hopefully unwedge it (Chris)
- Fix for Gen2 vblank timestap/frame counter jumps (Ville)
- Revert of a W/A for enabling FBC on CNL/GLK for certain images
  and sizes (Rodrigo)
- Lockdep fix for i915 userptr code (Chris)

gvt-fixes-2017-12-06

- Fix invalid hw reg read value for vGPU (Xiong)
- Fix qemu warning on PCI ROM bar missing (Changbin)
- Workaround preemption regression (Zhenyu)

* tag 'drm-intel-fixes-2017-12-07' of git://anongit.freedesktop.org/drm/drm-intel:
  Revert "drm/i915: Display WA #1133 WaFbcSkipSegments:cnl, glk"
  drm/i915: Call i915_gem_init_userptr() before taking struct_mutex
  drm/i915/gvt: set max priority for gvt context
  drm/i915/gvt: Don't mark vgpu context as inactive when preempted
  drm/i915/gvt: Limit read hw reg to active vgpu
  drm/i915/gvt: Export intel_gvt_render_mmio_to_ring_id()
  drm/i915/gvt: Emulate PCI expansion ROM base address register
  drm/i915/cnl: Mask previous DDI - PLL mapping
  drm/i915: Fix vblank timestamp/frame counter jumps on gen2
  drm/i915: Skip switch-to-kernel-context on suspend when wedged
      96980844
    • Dave Airlie's avatar
      Merge tag 'exynos-drm-fixes-for-v4.15-rc3' of... · c2ef3a67
      Dave Airlie authored 
      Merge tag 'exynos-drm-fixes-for-v4.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes

- fix page fault issue due to using wrong device object in prime import.
- drop NONCONTIG flag without IOMMU support.
- remove unnecessary members and declaration.

* tag 'exynos-drm-fixes-for-v4.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
  drm/exynos: remove unnecessary function declaration
  drm/exynos: remove unnecessary descrptions
  drm/exynos: gem: Drop NONCONTIG flag for buffers allocated without IOMMU
  drm/exynos: Fix dma-buf import
      c2ef3a67
    • Joonas Lahtinen's avatar
      Merge tag 'gvt-fixes-2017-12-06' of https://github.com/intel/gvt-linux into drm-intel-fixes · d85936ab
      Joonas Lahtinen authored 
      gvt-fixes-2017-12-06

- Fix invalid hw reg read value for vGPU (Xiong)
- Fix qemu warning on PCI ROM bar missing (Changbin)
- Workaround preemption regression (Zhenyu)
Signed-off-by: default avatarJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171206075105.wlh2ojubjczlstox@zhen-hp.sh.intel.com
      d85936ab
    • Radhakrishna Sripada's avatar
      Revert "drm/i915: Display WA #1133 WaFbcSkipSegments:cnl, glk" · 7a8b7053
      Radhakrishna Sripada authored 
      This reverts commit 8f067837.

HSD says "WA withdrawn. It was causing corruption with some images.
WA is not strictly necessary since this bug just causes loss of FBC
compression with some sizes and images, but doesn't break anything."

Fixes: 8f067837 ("drm/i915: Display WA #1133 WaFbcSkipSegments:cnl, glk")
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: default avatarRadhakrishna Sripada <radhakrishna.sripada@intel.com>
Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171117010825.23118-1-radhakrishna.sripada@intel.com
(cherry picked from commit 0cfecb7c)
Signed-off-by: default avatarJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
      7a8b7053
    • Chris Wilson's avatar
      drm/i915: Call i915_gem_init_userptr() before taking struct_mutex · ef78970a
      Chris Wilson authored 
      We don't need struct_mutex to initialise userptr (it just allocates a
workqueue for itself etc), but we do need struct_mutex later on in
i915_gem_init() in order to feed requests onto the HW.

This should break the chain

[  385.697902] ======================================================
[  385.697907] WARNING: possible circular locking dependency detected
[  385.697913] 4.14.0-CI-Patchwork_7234+ #1 Tainted: G     U
[  385.697917] ------------------------------------------------------
[  385.697922] perf_pmu/2631 is trying to acquire lock:
[  385.697927]  (&mm->mmap_sem){++++}, at: [<ffffffff811bfe1e>] __might_fault+0x3e/0x90
[  385.697941]
               but task is already holding lock:
[  385.697946]  (&cpuctx_mutex){+.+.}, at: [<ffffffff8116fe8c>] perf_event_ctx_lock_nested+0xbc/0x1d0
[  385.697957]
               which lock already depends on the new lock.

[  385.697963]
               the existing dependency chain (in reverse order) is:
[  385.697970]
               -> #4 (&cpuctx_mutex){+.+.}:
[  385.697980]        __mutex_lock+0x86/0x9b0
[  385.697985]        perf_event_init_cpu+0x5a/0x90
[  385.697991]        perf_event_init+0x178/0x1a4
[  385.697997]        start_kernel+0x27f/0x3f1
[  385.698003]        verify_cpu+0x0/0xfb
[  385.698006]
               -> #3 (pmus_lock){+.+.}:
[  385.698015]        __mutex_lock+0x86/0x9b0
[  385.698020]        perf_event_init_cpu+0x21/0x90
[  385.698025]        cpuhp_invoke_callback+0xca/0xc00
[  385.698030]        _cpu_up+0xa7/0x170
[  385.698035]        do_cpu_up+0x57/0x70
[  385.698039]        smp_init+0x62/0xa6
[  385.698044]        kernel_init_freeable+0x97/0x193
[  385.698050]        kernel_init+0xa/0x100
[  385.698055]        ret_from_fork+0x27/0x40
[  385.698058]
               -> #2 (cpu_hotplug_lock.rw_sem){++++}:
[  385.698068]        cpus_read_lock+0x39/0xa0
[  385.698073]        apply_workqueue_attrs+0x12/0x50
[  385.698078]        __alloc_workqueue_key+0x1d8/0x4d8
[  385.698134]        i915_gem_init_userptr+0x5f/0x80 [i915]
[  385.698176]        i915_gem_init+0x7c/0x390 [i915]
[  385.698213]        i915_driver_load+0x99e/0x15c0 [i915]
[  385.698250]        i915_pci_probe+0x33/0x90 [i915]
[  385.698256]        pci_device_probe+0xa1/0x130
[  385.698262]        driver_probe_device+0x293/0x440
[  385.698267]        __driver_attach+0xde/0xe0
[  385.698272]        bus_for_each_dev+0x5c/0x90
[  385.698277]        bus_add_driver+0x16d/0x260
[  385.698282]        driver_register+0x57/0xc0
[  385.698287]        do_one_initcall+0x3e/0x160
[  385.698292]        do_init_module+0x5b/0x1fa
[  385.698297]        load_module+0x2374/0x2dc0
[  385.698302]        SyS_finit_module+0xaa/0xe0
[  385.698307]        entry_SYSCALL_64_fastpath+0x1c/0xb1
[  385.698311]
               -> #1 (&dev->struct_mutex){+.+.}:
[  385.698320]        __mutex_lock+0x86/0x9b0
[  385.698361]        i915_mutex_lock_interruptible+0x4c/0x130 [i915]
[  385.698403]        i915_gem_fault+0x206/0x760 [i915]
[  385.698409]        __do_fault+0x1a/0x70
[  385.698413]        __handle_mm_fault+0x7c4/0xdb0
[  385.698417]        handle_mm_fault+0x154/0x300
[  385.698440]        __do_page_fault+0x2d6/0x570
[  385.698445]        page_fault+0x22/0x30
[  385.698449]
               -> #0 (&mm->mmap_sem){++++}:
[  385.698459]        lock_acquire+0xaf/0x200
[  385.698464]        __might_fault+0x68/0x90
[  385.698470]        _copy_to_user+0x1e/0x70
[  385.698475]        perf_read+0x1aa/0x290
[  385.698480]        __vfs_read+0x23/0x120
[  385.698484]        vfs_read+0xa3/0x150
[  385.698488]        SyS_read+0x45/0xb0
[  385.698493]        entry_SYSCALL_64_fastpath+0x1c/0xb1
[  385.698497]
               other info that might help us debug this:

[  385.698505] Chain exists of:
                 &mm->mmap_sem --> pmus_lock --> &cpuctx_mutex

[  385.698517]  Possible unsafe locking scenario:

[  385.698522]        CPU0                    CPU1
[  385.698526]        ----                    ----
[  385.698529]   lock(&cpuctx_mutex);
[  385.698553]                                lock(pmus_lock);
[  385.698558]                                lock(&cpuctx_mutex);
[  385.698564]   lock(&mm->mmap_sem);
[  385.698568]
                *** DEADLOCK ***

[  385.698574] 1 lock held by perf_pmu/2631:
[  385.698578]  #0:  (&cpuctx_mutex){+.+.}, at: [<ffffffff8116fe8c>] perf_event_ctx_lock_nested+0xbc/0x1d0
[  385.698589]
               stack backtrace:
[  385.698595] CPU: 3 PID: 2631 Comm: perf_pmu Tainted: G     U          4.14.0-CI-Patchwork_7234+ #1
[  385.698602] Hardware name:                  /NUC6CAYB, BIOS AYAPLCEL.86A.0040.2017.0619.1722 06/19/2017
[  385.698609] Call Trace:
[  385.698615]  dump_stack+0x5f/0x86
[  385.698621]  print_circular_bug.isra.18+0x1d0/0x2c0
[  385.698627]  __lock_acquire+0x19c3/0x1b60
[  385.698634]  ? generic_exec_single+0x77/0xe0
[  385.698640]  ? lock_acquire+0xaf/0x200
[  385.698644]  lock_acquire+0xaf/0x200
[  385.698650]  ? __might_fault+0x3e/0x90
[  385.698655]  __might_fault+0x68/0x90
[  385.698660]  ? __might_fault+0x3e/0x90
[  385.698665]  _copy_to_user+0x1e/0x70
[  385.698670]  perf_read+0x1aa/0x290
[  385.698675]  __vfs_read+0x23/0x120
[  385.698682]  ? __fget+0x101/0x1f0
[  385.698686]  vfs_read+0xa3/0x150
[  385.698691]  SyS_read+0x45/0xb0
[  385.698696]  entry_SYSCALL_64_fastpath+0x1c/0xb1
[  385.698701] RIP: 0033:0x7ff1c46876ed
[  385.698705] RSP: 002b:00007fff13552f90 EFLAGS: 00000293 ORIG_RAX: 0000000000000000
[  385.698712] RAX: ffffffffffffffda RBX: ffffc90000647ff0 RCX: 00007ff1c46876ed
[  385.698718] RDX: 0000000000000010 RSI: 00007fff13552fa0 RDI: 0000000000000005
[  385.698723] RBP: 000056063d300580 R08: 0000000000000000 R09: 0000000000000060
[  385.698729] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000046
[  385.698734] R13: 00007fff13552c6f R14: 00007ff1c6279d00 R15: 00007ff1c6279a40

Testcase: igt/perf_pmu
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171122172621.16158-1-chris@chris-wilson.co.ukReviewed-by: default avatarTvrtko Ursulin <tvrtko.ursulin@intel.com>
(cherry picked from commit ee48700d)
Signed-off-by: default avatarJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
      ef78970a
    • Inki Dae's avatar
      drm/exynos: remove unnecessary function declaration · 1cd6ae35
      Inki Dae authored 
      Removed exynos_drm_get_dma_device funtion declaration on top
of exynos_drm_drv.c file.

We can remove this declaration by moving the implementation
of this function upwards.
Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
      1cd6ae35
    • Inki Dae's avatar
      drm/exynos: remove unnecessary descrptions · 2f0f6dfc
      Inki Dae authored 
      Removed two descriptions to 'da_start' and 'da_space_size'
from exynos_drm_private structure.

These members don't exist anymore.
Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
      2f0f6dfc
    • Marek Szyprowski's avatar
      drm/exynos: gem: Drop NONCONTIG flag for buffers allocated without IOMMU · 120a264f
      Marek Szyprowski authored 
      When no IOMMU is available, all GEM buffers allocated by Exynos DRM driver
are contiguous, because of the underlying dma_alloc_attrs() function
provides only such buffers. In such case it makes no sense to keep
BO_NONCONTIG flag for the allocated GEM buffers. This allows to avoid
failures for buffer contiguity checks in the subsequent operations on GEM
objects.
Signed-off-by: default avatarMarek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
CC: stable@vger.kernel.org # v4.4+
      120a264f
    • Marek Szyprowski's avatar
      drm/exynos: Fix dma-buf import · 89452d4a
      Marek Szyprowski authored 
      When IOMMU support was enabled, dma-buf import in Exynos DRM was broken
since commit f43c3596 ("drm/exynos: use real device for DMA-mapping
operations") due to using wrong struct device in drm_gem_prime_import()
function. This patch fixes following kernel BUG caused by incorrect buffer
mapping to DMA address space:

exynos-sysmmu 14650000.sysmmu: 14450000.mixer: PAGE FAULT occurred at 0xb2e00000
------------[ cut here ]------------
kernel BUG at drivers/iommu/exynos-iommu.c:449!
Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.14.0-rc4-next-20171016-00033-g990d723669fd #3165
Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
task: c0e0b7c0 task.stack: c0e00000
PC is at exynos_sysmmu_irq+0x1d0/0x24c
LR is at exynos_sysmmu_irq+0x154/0x24c
------------[ cut here ]------------
Reported-by: default avatarMarian Mihailescu <mihailescu2m@gmail.com>
Fixes: f43c3596 ("drm/exynos: use real device for DMA-mapping operations")
Signed-off-by: default avatarMarek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: default avatarTobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
      89452d4a
  3. 06 Dec, 2017 9 commits
  5. 05 Dec, 2017 9 commits
  7. 04 Dec, 2017 2 commits
  9. 03 Dec, 2017 5 commits
  11. 02 Dec, 2017 4 commits
    • Linus Torvalds's avatar
      Merge tag 'nfs-for-4.15-2' of git://git.linux-nfs.org/projects/anna/linux-nfs · 2db767d9
      Linus Torvalds authored 
      Pull NFS client fixes from Anna Schumaker:
 "These patches fix a problem with compiling using an old version of
  gcc, and also fix up error handling in the SUNRPC layer.

   - NFSv4: Ensure gcc 4.4.4 can compile initialiser for
     "invalid_stateid"

   - SUNRPC: Allow connect to return EHOSTUNREACH

   - SUNRPC: Handle ENETDOWN errors"

* tag 'nfs-for-4.15-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
  SUNRPC: Handle ENETDOWN errors
  SUNRPC: Allow connect to return EHOSTUNREACH
  NFSv4: Ensure gcc 4.4.4 can compile initialiser for "invalid_stateid"
      2db767d9
    • Linus Torvalds's avatar
      Merge tag 'xfs-4.15-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux · 788c1da0
      Linus Torvalds authored 
      Pull xfs fixes from Darrick Wong:
 "Here are some bug fixes for 4.15-rc2.

   - fix memory leaks that appeared after removing ifork inline data
     buffer

   - recover deferred rmap update log items in correct order

   - fix memory leaks when buffer construction fails

   - fix memory leaks when bmbt is corrupt

   - fix some uninitialized variables and math problems in the quota
     scrubber

   - add some omitted attribution tags on the log replay commit

   - fix some UBSAN complaints about integer overflows with large sparse
     files

   - implement an effective inode mode check in online fsck

   - fix log's inability to retry quota item writeout due to transient
     errors"

* tag 'xfs-4.15-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: Properly retry failed dquot items in case of error during buffer writeback
  xfs: scrub inode mode properly
  xfs: remove unused parameter from xfs_writepage_map
  xfs: ubsan fixes
  xfs: calculate correct offset in xfs_scrub_quota_item
  xfs: fix uninitialized variable in xfs_scrub_quota
  xfs: fix leaks on corruption errors in xfs_bmap.c
  xfs: fortify xfs_alloc_buftarg error handling
  xfs: log recovery should replay deferred ops in order
  xfs: always free inline data before resetting inode fork during ifree
      788c1da0
    • Linus Torvalds's avatar
      Merge tag 'riscv-for-linus-4.15-rc2_cleanups' of... · e1ba1c99
      Linus Torvalds authored 
      Merge tag 'riscv-for-linus-4.15-rc2_cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/linux

Pull RISC-V cleanups and ABI fixes from Palmer Dabbelt:
 "This contains a handful of small cleanups that are a result of
  feedback that didn't make it into our original patch set, either
  because the feedback hadn't been given yet, I missed the original
  emails, or we weren't ready to submit the changes yet.

  I've been maintaining the various cleanup patch sets I have as their
  own branches, which I then merged together and signed. Each merge
  commit has a short summary of the changes, and each branch is based on
  your latest tag (4.15-rc1, in this case). If this isn't the right way
  to do this then feel free to suggest something else, but it seems sane
  to me.

  Here's a short summary of the changes, roughly in order of how
  interesting they are.

   - libgcc.h has been moved from include/lib, where it's the only
     member, to include/linux. This is meant to avoid tab completion
     conflicts.

   - VDSO entries for clock_get/gettimeofday/getcpu have been added.
     These are simple syscalls now, but we want to let glibc use them
     from the start so we can make them faster later.

   - A VDSO entry for instruction cache flushing has been added so
     userspace can flush the instruction cache.

   - The VDSO symbol versions for __vdso_cmpxchg{32,64} have been
     removed, as those VDSO entries don't actually exist.

   - __io_writes has been corrected to respect the given type.

   - A new READ_ONCE in arch_spin_is_locked().

   - __test_and_op_bit_ord() is now actually ordered.

   - Various small fixes throughout the tree to enable allmodconfig to
     build cleanly.

   - Removal of some dead code in our atomic support headers.

   - Improvements to various comments in our atomic support headers"

* tag 'riscv-for-linus-4.15-rc2_cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/linux: (23 commits)
  RISC-V: __io_writes should respect the length argument
  move libgcc.h to include/linux
  RISC-V: Clean up an unused include
  RISC-V: Allow userspace to flush the instruction cache
  RISC-V: Flush I$ when making a dirty page executable
  RISC-V: Add missing include
  RISC-V: Use define for get_cycles like other architectures
  RISC-V: Provide stub of setup_profiling_timer()
  RISC-V: Export some expected symbols for modules
  RISC-V: move empty_zero_page definition to C and export it
  RISC-V: io.h: type fixes for warnings
  RISC-V: use RISCV_{INT,SHORT} instead of {INT,SHORT} for asm macros
  RISC-V: use generic serial.h
  RISC-V: remove spin_unlock_wait()
  RISC-V: `sfence.vma` orderes the instruction cache
  RISC-V: Add READ_ONCE in arch_spin_is_locked()
  RISC-V: __test_and_op_bit_ord should be strongly ordered
  RISC-V: Remove smb_mb__{before,after}_spinlock()
  RISC-V: Remove __smp_bp__{before,after}_atomic
  RISC-V: Comment on why {,cmp}xchg is ordered how it is
  ...
      e1ba1c99
    • Linus Torvalds's avatar
      Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux · 4b1967c9
      Linus Torvalds authored 
      Pull arm64 fixes from Will Deacon:
 "The critical one here is a fix for fpsimd register corruption across
  signals which was introduced by the SVE support code (the register
  files overlap), but the others are worth having as well.

  Summary:

   - Fix FP register corruption when SVE is not available or in use

   - Fix out-of-tree module build failure when CONFIG_ARM64_MODULE_PLTS=y

   - Missing 'const' generating errors with LTO builds

   - Remove unsupported events from Cortex-A73 PMU description

   - Removal of stale and incorrect comments"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: context: Fix comments and remove pointless smp_wmb()
  arm64: cpu_ops: Add missing 'const' qualifiers
  arm64: perf: remove unsupported events for Cortex-A73
  arm64: fpsimd: Fix failure to restore FPSIMD state after signals
  arm64: pgd: Mark pgd_cache as __ro_after_init
  arm64: ftrace: emit ftrace-mod.o contents through code
  arm64: module-plts: factor out PLT generation code for ftrace
  arm64: mm: cleanup stale AIVIVT references
      4b1967c9
  13. 01 Dec, 2017 2 commits
    • Palmer Dabbelt's avatar
      RISC-V: Fixes for clean allmodconfig build · 3b62de26
      Palmer Dabbelt authored 
      Olaf said: Here's a short series of patches that produces a working
allmodconfig. Would be nice to see them go in so we can add build
coverage.

I've dropped patches 8 and 10 from the original set:

* [PATCH 08/10] (RISC-V: Set __ARCH_WANT_RENAMEAT to pick up generic
  version) has a better fix that I've sent out for review, we don't want
  renameat.
* [PATCH 10/10] (input: joystick: riscv has get_cycles) has already been
  taken into Dmitry Torokhov's tree.
      3b62de26
    • Palmer Dabbelt's avatar
      move libgcc.h to include/linux · 185e788c
      Palmer Dabbelt authored
      185e788c
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