diff options
| author |   Hang Yuan <hang.yuan@linux.intel.com> | 2018-10-30 15:08:01 +0800 |
|---|---|---|
| committer |   Chris Wilson <chris@chris-wilson.co.uk> | 2018-10-31 08:37:45 +0000 |
| commit | e5ee4956f2fdda8ac2d3eab309df389d43b80fc0 (patch) | |
| tree | f1e4fb8f87406ad05111d1a233d456fb9618489c /drivers/gpu/drm/i915/i915_gem_gtt.c | |
| parent | drm/i915/icl: Enable DC9 as lowest possible state during screen-off (diff) | |
| download | linux-dev-e5ee4956f2fdda8ac2d3eab309df389d43b80fc0.tar.xz linux-dev-e5ee4956f2fdda8ac2d3eab309df389d43b80fc0.zip | |
drm/i915/gtt: Revert "Disable read-only support under GVT"
This reverts commit c9e666880de5a1fed04dc412b046916d542b72dd.
Checked GVT codes that guest PPGTT PTE flag bits are propagated
to shadow PTE. Read/write bit is not changed. Further tested by
i915 self-test case "igt_ctx_readonly". No error or GPU hang was
detected. So enable read-only support under GVT.
Signed-off-by: Hang Yuan <hang.yuan@linux.intel.com>
Acked-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1540883281-11359-1-git-send-email-hang.yuan@linux.intel.com
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_gtt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_gtt.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 9ea024395d49..a98c29147d5e 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -1625,12 +1625,8 @@ static struct i915_hw_ppgtt *gen8_ppgtt_create(struct drm_i915_private *i915) 1ULL << 48 : 1ULL << 32; - /* - * From bdw, there is support for read-only pages in the PPGTT. - * - * XXX GVT is not honouring the lack of RW in the PTE bits. - */ - ppgtt->vm.has_read_only = !intel_vgpu_active(i915); + /* From bdw, there is support for read-only pages in the PPGTT. */ + ppgtt->vm.has_read_only = true; i915_address_space_init(&ppgtt->vm, i915); |