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Commit a08b588e4199e4200d26027ffcdf3ab2fa906412

Authored by Michel Dänzer
Committed by Alex Deucher
1 parent 86b276385c
Exists in ti-lsk-linux-4.1.y and in 10 other branches dlt-processor-sdk-linux-03.00.00.04, processor-sdk-linux-02.00.01, smarc-ti-lsk-linux-4.1.y, smarct3x-processor-sdk-04.01.00.06, smarct3x-processor-sdk-linux-02.00.01, smarct3x-processor-sdk-linux-03.00.00.04, smarct4x-800-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-04.01.00.06, smarct4x-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-linux-03.00.00.04

drm/radeon: Ignore RADEON_GEM_GTT_WC on 32-bit x86 

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=84627
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

Showing 1 changed file with 7 additions and 0 deletions Side-by-side Diff

drivers/gpu/drm/radeon/radeon_object.c
Diff comments   View file @ a08b588
... ... @@ -213,6 +213,13 @@
213 213 if (!(rdev->flags & RADEON_IS_PCIE))
214 214 bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC);
215 215  
  216 +#ifdef CONFIG_X86_32
  217 + /* XXX: Write-combined CPU mappings of GTT seem broken on 32-bit
  218 + * See https://bugs.freedesktop.org/show_bug.cgi?id=84627
  219 + */
  220 + bo->flags &= ~RADEON_GEM_GTT_WC;
  221 +#endif
  222 +
216 223 radeon_ttm_placement_from_domain(bo, domain);
217 224 /* Kernel allocation are uninterruptible */
218 225 down_read(&rdev->pm.mclk_lock);