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Commit 7de50906 authored by Igor Druzhinin's avatar Igor Druzhinin Committed by Greg Kroah-Hartman
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drm/i915/gvt: more locking for ppgtt mm LRU list 



commit 0e9d7bb293f3f9c3ee376b126141407efb265f31 upstream.

When the lock was introduced in commit 72aabfb8 ("drm/i915/gvt: Add mutual
lock for ppgtt mm LRU list") one place got lost.

Fixes: 72aabfb8 ("drm/i915/gvt: Add mutual lock for ppgtt mm LRU list")
Signed-off-by: default avatarIgor Druzhinin <igor.druzhinin@citrix.com>
Reviewed-by: default avatarZhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: default avatarZhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1580742421-25194-1-git-send-email-igor.druzhinin@citrix.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 19f8fb27

drivers/gpu/drm/i915/gvt/gtt.c

+4 −0
Original line number Diff line number Diff line
@@ -1956,7 +1956,11 @@ void _intel_vgpu_mm_release(struct kref *mm_ref) 


	if (mm->type == INTEL_GVT_MM_PPGTT) {

		list_del(&mm->ppgtt_mm.list);



		mutex_lock(&mm->vgpu->gvt->gtt.ppgtt_mm_lock);

		list_del(&mm->ppgtt_mm.lru_list);

		mutex_unlock(&mm->vgpu->gvt->gtt.ppgtt_mm_lock);



		invalidate_ppgtt_mm(mm);

	} else {

		vfree(mm->ggtt_mm.virtual_ggtt);