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drm/i915: Fix the kernel panic when using aliasing ppgtt

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The ppgtt should be get directly from i915_address_space *vm instead of
vma->vm.

v2:
- add one more fix for bxt. (Chris)

Fixes: 4a234c5fae ("drm/i915: pass the vma to insert_entries")
Bugzilla:https://bugs.freedesktop.org/show_bug.cgi?id=101713
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com> v1
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1499421059-18262-1-git-send-email-chuanxiao.dong@intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chuanxiao Dong 2017-07-07 17:50:59 +08:00 committed by Chris Wilson
parent 6602be0e2c
commit 17369ba08c
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/i915_gem_gtt.c
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@ -910,7 +910,7 @@ static void gen8_ppgtt_insert_3lvl(struct i915_address_space *vm,
enum i915_cache_level cache_level,
u32 unused)
{
struct i915_hw_ppgtt *ppgtt = i915_vm_to_ppgtt(vma->vm);
struct i915_hw_ppgtt *ppgtt = i915_vm_to_ppgtt(vm);
struct sgt_dma iter = {
.sg = vma->pages->sgl,
.dma = sg_dma_address(iter.sg),
@ -2242,7 +2242,7 @@ static void bxt_vtd_ggtt_insert_entries__BKL(struct i915_address_space *vm,
enum i915_cache_level level,
u32 unused)
{
struct insert_entries arg = { vma->vm, vma, level };
struct insert_entries arg = { vm, vma, level };
stop_machine(bxt_vtd_ggtt_insert_entries__cb, &arg, NULL);
}