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e94e3f3b51cebd08eb3157a7f1fa9bae96703f18
android_kernel_xiaomi_sm8450/drivers/gpu/drm/i915/gem
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Josh Poimboeuf e6a9522ac3 drm/i915: Remove redundant user_access_end() from __copy_from_user() error path 
Objtool reports:

  drivers/gpu/drm/i915/gem/i915_gem_execbuffer.o: warning: objtool: .altinstr_replacement+0x36: redundant UACCESS disable

__copy_from_user() already does both STAC and CLAC, so the
user_access_end() in its error path adds an extra unnecessary CLAC.

Fixes: 0b2c8f8b6b ("i915: fix missing user_access_end() in page fault exception case")
Reported-by: Thomas Gleixner <tglx@linutronix.de>
Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://github.com/ClangBuiltLinux/linux/issues/617
Link: https://lkml.kernel.org/r/51a4155c5bc2ca847a9cbe85c1c11918bb193141.1564086017.git.jpoimboe@redhat.com
2019-08-09 23:13:25 +02:00
..
selftests
drm/i915: Stop passing I915_WAIT_LOCKED to i915_request_wait()
2019-06-19 12:58:38 +01:00
i915_gem_busy.c
drm/i915: Use drm_gem_object.resv
2019-06-18 15:30:32 +01:00
i915_gem_clflush.c
drm/i915: Use drm_gem_object.resv
2019-06-18 15:30:32 +01:00
i915_gem_clflush.h
drm/i915: Move more GEM objects under gem/
2019-05-28 12:45:29 +01:00
i915_gem_client_blt.c
drm/i915: Use drm_gem_object.resv
2019-06-18 15:30:32 +01:00
i915_gem_client_blt.h
drm/i915: add in-kernel blitter client
2019-05-30 12:01:44 +01:00
i915_gem_context_types.h
drm/i915: Pull kref into i915_address_space
2019-06-11 11:44:24 +01:00
i915_gem_context.c
drm/i915/gtt: Use a common type for page directories
2019-06-17 16:30:54 +03:00
i915_gem_context.h
drm/i915: Keep contexts pinned until after the next kernel context switch
2019-06-14 19:03:32 +01:00
i915_gem_dmabuf.c
drm/i915: Use drm_gem_object.resv
2019-06-18 15:30:32 +01:00
i915_gem_domain.c
drm/i915: move modesetting core code under display/
2019-06-17 11:48:32 +03:00
i915_gem_execbuffer.c
drm/i915: Remove redundant user_access_end() from __copy_from_user() error path
2019-08-09 23:13:25 +02:00
i915_gem_fence.c
drm/i915: Use drm_gem_object.resv
2019-06-18 15:30:32 +01:00
i915_gem_internal.c
drm/i915: Pull scatterlist utils out of i915_gem.h
2019-05-28 12:45:29 +01:00
i915_gem_ioctls.h
drm/i915: Pull GEM ioctls interface to its own file
2019-05-28 12:45:29 +01:00
i915_gem_mman.c
drm/i915: Mark expected switch fall-throughs
2019-07-25 20:13:47 -05:00
i915_gem_object_blt.c
drm/i915: Pull kref into i915_address_space
2019-06-11 11:44:24 +01:00
i915_gem_object_blt.h
drm/i915: add in-kernel blitter client
2019-05-30 12:01:44 +01:00
i915_gem_object_types.h
drm/i915: Use drm_gem_object.resv
2019-06-18 15:30:32 +01:00
i915_gem_object.c
drm/i915: Skip shrinking already freed pages
2019-06-18 18:09:08 +01:00
i915_gem_object.h
drm/i915: Use drm_gem_object.resv
2019-06-18 15:30:32 +01:00
i915_gem_pages.c
drm/i915: Mark expected switch fall-throughs
2019-07-25 20:13:47 -05:00
i915_gem_phys.c
drm/i915: Pull scatterlist utils out of i915_gem.h
2019-05-28 12:45:29 +01:00
i915_gem_pm.c
drm/i915: Lift intel_engines_resume() to callers
2019-08-01 13:21:38 +03:00
i915_gem_pm.h
drm/i915: Move more GEM objects under gem/
2019-05-28 12:45:29 +01:00
i915_gem_shmem.c
drm/i915: Track the purgeable objects on a separate eviction list
2019-05-31 21:23:51 +01:00
i915_gem_shrinker.c
drm/i915: Skip shrinking already freed pages
2019-06-18 18:09:08 +01:00
i915_gem_stolen.c
drm/i915: Combine unbound/bound list tracking for objects
2019-06-12 13:36:43 +01:00
i915_gem_throttle.c
drm/i915: Move GEM client throttling to its own file
2019-05-28 12:45:29 +01:00
i915_gem_tiling.c
drm/i915: Move more GEM objects under gem/
2019-05-28 12:45:29 +01:00
i915_gem_userptr.c
drm/i915/userptr: Acquire the page lock around set_page_dirty()
2019-07-29 15:37:50 +03:00
i915_gem_wait.c
drm/i915: Use drm_gem_object.resv
2019-06-18 15:30:32 +01:00
i915_gemfs.c
drm/i915: Move more GEM objects under gem/
2019-05-28 12:45:29 +01:00
i915_gemfs.h
drm/i915: Move more GEM objects under gem/
2019-05-28 12:45:29 +01:00
Makefile
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Makefile.header-test
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