diff options
| author | fred gao <fred.gao@intel.com> | 2017-05-24 12:02:24 +0800 |
|---|---|---|
| committer | Zhenyu Wang <zhenyuw@linux.intel.com> | 2017-06-08 13:59:21 +0800 |
| commit | 0811fa663015c469510f30e2a0f2fe8fd383b224 (patch) | |
| tree | be1b0356a46bd10d69cd605b9d466776174ccfb8 /drivers/gpu/drm/i915/gvt | |
| parent | 178cd160c6652f57571ba3dc0a9091a1f41d9bc8 (diff) | |
| download | op-kernel-dev-0811fa663015c469510f30e2a0f2fe8fd383b224.zip op-kernel-dev-0811fa663015c469510f30e2a0f2fe8fd383b224.tar.gz | |
drm/i915/gvt: Fix GDRST vreg state after reset
Emulating the GDRST read behavior correctly to ack the
guest reset request.
v2:
- split the original patch into two:
GDRST read handler and virtual gpu reset. (Zhenyu)
v3:
- emulate the GDRST read right after write. (Zhenyu)
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Zhang Yulei <yulei.zhang@intel.com>
Signed-off-by: fred gao <fred.gao@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/gvt')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/handlers.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c index eb3dc15..372421b 100644 --- a/drivers/gpu/drm/i915/gvt/handlers.c +++ b/drivers/gpu/drm/i915/gvt/handlers.c @@ -298,6 +298,9 @@ static int gdrst_mmio_write(struct intel_vgpu *vgpu, unsigned int offset, intel_gvt_reset_vgpu_locked(vgpu, false, engine_mask); + /* sw will wait for the device to ack the reset request */ + vgpu_vreg(vgpu, offset) = 0; + return 0; } |
