drm/i915/gvt: set the correct default value of CTX STATUS PTR
PATCH 1/1 drm/i915/gvt: set the correct default value of CTX STATUS PTR
From: Min He <[email protected]>
Fix wrong initial csb read pointer value. This fixes the random engine timeout issue in guest when guest boots up.
Cc [email protected] # v4.10+
Signed-off-by Min He <[email protected]>
Signed-off-by Zhenyu Wang <[email protected]>
--- drivers/gpu/drm/i915/gvt/execlist.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
drivers/gpu/drm/i915/gvt/execlist.c +2 -1
@@ -776,7 +776,8 @@ 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; }
Signature · 1 line
2.11.0
PATCH v2 1/1 drm/i915/gvt: set the correct default value of CTX STATUS PTR
From: Min He <[email protected]>
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 [email protected] # v4.10+
Signed-off-by Min He <[email protected]>
Signed-off-by Zhenyu Wang <[email protected]>
--- drivers/gpu/drm/i915/gvt/execlist.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
drivers/gpu/drm/i915/gvt/execlist.c +2 -1
@@ -776,7 +776,8 @@ 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; }
Signature · 1 line
2.11.0