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Date: Tue, 29 Nov 2011 16:09:29 +0100 From: Daniel Vetter <daniel.vetter@...ll.ch> To: intel-gfx@...ts.freedesktop.org Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, Daniel Vetter <daniel.vetter@...ll.ch>, stable@...nel.org Subject: [PATCH 2/2] drm/i915: properly clflush pwrites to phys objects Usually results in (rare) cursor corruptions on platforms requiring physically addressed cursors. Note to the stable team: This requires the drm core patch "drm: add helper to clflush a virtual address range" which creates the helper used here. Tested-and-reported-by: Bruno Prémont <bonbons@...ux-vserver.org> Cc: stable@...nel.org Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=35460 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=21442 Signed-Off-by: Daniel Vetter <daniel.vetter@...ll.ch> --- drivers/gpu/drm/i915/i915_gem.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 39459d2..e395a7d 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -4123,6 +4123,7 @@ i915_gem_phys_pwrite(struct drm_device *dev, return -EFAULT; } + drm_clflush_virt_range(vaddr, args->size); intel_gtt_chipset_flush(); return 0; } -- 1.7.7.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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