diff options
| author |   Min He <min.he@intel.com> | 2017-04-06 11:01:45 +0800 |
|---|---|---|
| committer |   Zhenyu Wang <zhenyuw@linux.intel.com> | 2017-04-06 11:08:04 +0800 |
| commit | a34f83639490a5cc11a9d5c1b3773d4b6eb69a9e (patch) | |
| tree | 4d3f9c869a9e99546e492f16539ac26d3ad5d719 /drivers/gpu/drm | |
| parent | drm/i915/gvt: Fix firmware loading interface for GVT-g golden HW state (diff) | |
| download | linux-dev-a34f83639490a5cc11a9d5c1b3773d4b6eb69a9e.tar.xz linux-dev-a34f83639490a5cc11a9d5c1b3773d4b6eb69a9e.zip | |
drm/i915/gvt: set the correct default value of CTX STATUS PTR
Fix wrong initial csb read pointer value. This fixes the random
engine timeout issue in guest when guest boots up.
Fixes: 8453d674ae7e ("drm/i915/gvt: vGPU execlist virtualization")
Cc: stable@vger.kernel.org # v4.10+
Signed-off-by: Min He <min.he@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/execlist.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/gvt/execlist.c b/drivers/gpu/drm/i915/gvt/execlist.c index f1f426a97aa9..d186c157f65f 100644 --- a/drivers/gpu/drm/i915/gvt/execlist.c +++ b/drivers/gpu/drm/i915/gvt/execlist.c @@ -775,7 +775,8 @@ static void init_vgpu_execlist(struct intel_vgpu *vgpu, int ring_id) _EL_OFFSET_STATUS_PTR); ctx_status_ptr.dw = vgpu_vreg(vgpu, ctx_status_ptr_reg); - ctx_status_ptr.read_ptr = ctx_status_ptr.write_ptr = 0x7; + ctx_status_ptr.read_ptr = 0; + ctx_status_ptr.write_ptr = 0x7; vgpu_vreg(vgpu, ctx_status_ptr_reg) = ctx_status_ptr.dw; } |