drm/i915/gvt: Use KVM r/w to access guest opregion

For KVMGT, the guest opregion, which is handled by VFIO, is actually a
piece of guest memory which won't be accessed by devices. So, its mfn
shouldn't be obtained through VFIO interface. This patch uses KVM r/w
interface to access the data in guest opregion.

Fix the guest opregion accessing issue when host "intel_iommu=on".

v3:
- Remove mapped flag for KVM/VFIO usage, as it's useless for KVM.

v2:
- Set the gpa correctly when invoking KVM r/w operations. (Zhenyu)

Signed-off-by: Tina Zhang <tina.zhang@intel.com>
Cc: Yan Zhao <yan.y.zhao@intel.com>
Cc: Xiong Zhang <xiong.y.zhang@intel.com>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Tina Zhang
2018-01-31 14:42:44 +08:00
committed by Rodrigo Vivi
parent d480b28a41
commit 95925b9595
2 changed files with 70 additions and 29 deletions

View File

@@ -126,7 +126,6 @@ struct intel_vgpu_irq {
struct intel_vgpu_opregion {
bool mapped;
void *va;
void *va_gopregion;
u32 gfn[INTEL_GVT_OPREGION_PAGES];
};