diff options
| author | Min He <min.he@intel.com> | 2017-04-06 11:01:45 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-04-21 09:32:41 +0200 |
| commit | ebe4deab5c805a7301e6967d984d01bb8ff58c78 (patch) | |
| tree | 8725ba80dd52c9944bbfa1015f3bd21192144289 /drivers | |
| parent | 4bf7df7b3bd7b336280a938bf23c108e0bc52579 (diff) | |
| download | linux-stable-ebe4deab5c805a7301e6967d984d01bb8ff58c78.tar.gz linux-stable-ebe4deab5c805a7301e6967d984d01bb8ff58c78.tar.bz2 linux-stable-ebe4deab5c805a7301e6967d984d01bb8ff58c78.zip | |
drm/i915/gvt: set the correct default value of CTX STATUS PTR
commit a34f83639490a5cc11a9d5c1b3773d4b6eb69a9e upstream.
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")
Signed-off-by: Min He <min.he@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -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 34083731669d..6804bf5fec3a 100644 --- a/drivers/gpu/drm/i915/gvt/execlist.c +++ b/drivers/gpu/drm/i915/gvt/execlist.c @@ -778,7 +778,8 @@ 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; } |