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| author | Xiaolin Zhang <xiaolin.zhang@intel.com> | 2019-06-03 10:55:53 +0800 |
|---|---|---|
| committer | Zhenyu Wang <zhenyuw@linux.intel.com> | 2019-06-03 13:18:36 +0800 |
| commit | 15e7f52a4596b496ce3da2fa4c1f94c6fb0023f2 (patch) | |
| tree | cd80b905a97fafd33ca1c9bb165a2b51b417cd10 /drivers/gpu/drm/i915/gvt/scheduler.h | |
| parent | 3fcb01f8ab9d1c1cdd68142078243b675e17041d (diff) | |
| download | linux-stable-15e7f52a4596b496ce3da2fa4c1f94c6fb0023f2.tar.gz linux-stable-15e7f52a4596b496ce3da2fa4c1f94c6fb0023f2.tar.bz2 linux-stable-15e7f52a4596b496ce3da2fa4c1f94c6fb0023f2.zip | |
drm/i915/gvt: save RING_HEAD into vreg when vgpu switched out
Save RING_HEAD into vgpu reg when vgpu switched out and report
it's value back to guest.
v6: addressed comment for ring head wrap count support. (Zhenyu)
v5: ring head wrap count support.
v4: updated HEAD/TAIL with guest value, not host value. (Yan Zhao)
v3: save RING HEAD/TAIL vgpu reg in save_ring_hw_state. (Zhenyu Wang)
v2: save RING_TAIL as well during vgpu mmio switch to meet ring_is_idle
condition. (Fred Gao)
v1: based on input from Weinan. (Weinan Li)
[zhenyuw: Include this fix for possible future guest kernel that
would utilize RING_HEAD for hangcheck.]
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Xiaolin Zhang <xiaolin.zhang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/scheduler.h')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/scheduler.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gvt/scheduler.h b/drivers/gpu/drm/i915/gvt/scheduler.h index 90c6756f5453..c50d14a9ce85 100644 --- a/drivers/gpu/drm/i915/gvt/scheduler.h +++ b/drivers/gpu/drm/i915/gvt/scheduler.h @@ -100,6 +100,7 @@ struct intel_vgpu_workload { struct execlist_ctx_descriptor_format ctx_desc; struct execlist_ring_context *ring_context; unsigned long rb_head, rb_tail, rb_ctl, rb_start, rb_len; + unsigned long guest_rb_head; bool restore_inhibit; struct intel_vgpu_elsp_dwords elsp_dwords; bool emulate_schedule_in; |