From 17369ba08c065967b7b8c48253f20b73acc0b9f5 Mon Sep 17 00:00:00 2001 From: Chuanxiao Dong Date: Fri, 7 Jul 2017 17:50:59 +0800 Subject: [PATCH] drm/i915: Fix the kernel panic when using aliasing ppgtt The ppgtt should be get directly from i915_address_space *vm instead of vma->vm. v2: - add one more fix for bxt. (Chris) Fixes: 4a234c5fae16 ("drm/i915: pass the vma to insert_entries") Bugzilla:https://bugs.freedesktop.org/show_bug.cgi?id=101713 Signed-off-by: Chuanxiao Dong Reviewed-by: Matthew Auld v1 Cc: Matthew Auld Cc: Chris Wilson Cc: Zhenyu Wang Link: http://patchwork.freedesktop.org/patch/msgid/1499421059-18262-1-git-send-email-chuanxiao.dong@intel.com Reviewed-by: Chris Wilson Signed-off-by: Chris Wilson --- drivers/gpu/drm/i915/i915_gem_gtt.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index de67084d5fcf..10aa7762d9a6 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -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); }