diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2018-07-12 19:53:12 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-12 19:13:32 +0100 |
| commit | 3fd1c2e65c60c1c513155e1d1d74138b141aa8a3 (patch) | |
| tree | cb2b3dd772ffb6f114bbe923cc8eac8d2899e2b6 /drivers | |
| parent | 774b68aa2105c70b40c3b1777feb7ab500d716dd (diff) | |
drm/i915/gtt: Disable read-only support under GVT
commit c9e666880de5a1fed04dc412b046916d542b72dd upstream.
GVT is not propagating the PTE bits, and is always setting the
read-write bit, thus breaking read-only support.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Jon Bloomfield <jon.bloomfield@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Matthew Auld <matthew.william.auld@gmail.com>
Reviewed-by: Jon Bloomfield <jon.bloomfield@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180712185315.3288-3-chris@chris-wilson.co.uk
Signed-off-by: Jon Bloomfield <jon.bloomfield@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_gtt.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 3a80446e4e37..974c309a9392 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -1522,8 +1522,12 @@ static int gen8_ppgtt_init(struct i915_hw_ppgtt *ppgtt) ppgtt->base.unbind_vma = ppgtt_unbind_vma; ppgtt->base.bind_vma = ppgtt_bind_vma; - /* From bdw, there is support for read-only pages in the PPGTT */ - ppgtt->base.has_read_only = true; + /* + * 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->base.has_read_only = !intel_vgpu_active(ppgtt->base.dev); ppgtt->debug_dump = gen8_dump_ppgtt; |