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drm/xe/guc: Update POLICY_SCHED_IF_IDLE documentation

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Starting from the GuC firmware version 70.12.0 the meaning of the
POLICY_SCHED_IF_IDLE has changed, which now acts as a bulk update
of the VF_CFG_SCHED_PRIORITY configurations of all VFs.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://patch.msgid.link/20260402191726.4932-2-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko 2026-04-02 21:17:14 +02:00
parent 4d33314dec
commit 3fb4d2c107
1 changed files with 7 additions and 0 deletions
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7
drivers/gpu/drm/xe/abi/guc_klvs_abi.h
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@ -192,6 +192,13 @@ enum {
* `GuC KLV`_ keys available for use with PF2GUC_UPDATE_VGT_POLICY.
*
* _`GUC_KLV_VGT_POLICY_SCHED_IF_IDLE` : 0x8001
* [From 70.12.0]
* This config allows to update scheduling priority of PF and all VFs at once.
* Setting this policy to 0 updates all VFs scheduling priorities to LOW, and
* setting this policy to 1 updates all VFs scheduling priorities to NORMAL.
* Those changes will take effect on the next VF-Switch event.
*
* [Before 70.12.0]
* This config sets whether strict scheduling is enabled whereby any VF
* that doesn’t have work to submit is still allocated a fixed execution
* time-slice to ensure active VFs execution is always consistent even