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| author | Hang Yuan <hang.yuan@linux.intel.com> | 2018-07-03 12:31:17 +0300 |
|---|---|---|
| committer | Zhenyu Wang <zhenyuw@linux.intel.com> | 2018-07-05 10:33:37 +0300 |
| commit | 6cef21a1964933b77c855c55bac2723053cc676d (patch) | |
| tree | bdf2e1fe62316d01c8fb44d1bae88e0b87cdb583 /drivers/gpu/drm/i915/gvt/mmio.h | |
| parent | a4cae23cc05ccec749c2fc70fa9d8cda7c582319 (diff) | |
| download | linux-6cef21a1964933b77c855c55bac2723053cc676d.tar.xz | |
drm/i915/gvt: update vreg on inhibit context lri command
Commit cd7e 61b9"init mmio by lri command in vgpu inhibit context"
initializes registers saved/restored in context with its vreg value
through lri command in ring buffer. It relies on vreg got updated
on every guest access. There is a case found that Linux guest uses
lri command in inhibit-ctx to update the register. This patch adds
vreg update on this case.
v2: move mmio_attribute functions to gvt.h (Zhenyu)
v3: use mask_mmio_write in vreg update
v4: refine codes and add more comments (Zhenyu)
Fixes: cd7e61b9("drm/i915/gvt: init mmio by lri command in vgpu inhibit context")
Signed-off-by: Hang Yuan <hang.yuan@linux.intel.com>
Signed-off-by: Weinan Li <weinan.z.li@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/mmio.h')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/mmio.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gvt/mmio.h b/drivers/gpu/drm/i915/gvt/mmio.h index 71b620875943..dac8c6401e26 100644 --- a/drivers/gpu/drm/i915/gvt/mmio.h +++ b/drivers/gpu/drm/i915/gvt/mmio.h @@ -98,4 +98,6 @@ bool intel_gvt_in_force_nonpriv_whitelist(struct intel_gvt *gvt, int intel_vgpu_mmio_reg_rw(struct intel_vgpu *vgpu, unsigned int offset, void *pdata, unsigned int bytes, bool is_read); +int intel_vgpu_mask_mmio_write(struct intel_vgpu *vgpu, unsigned int offset, + void *p_data, unsigned int bytes); #endif |