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drm/xe: Avoid touching consumer fields in GuC pagefault ack

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The GuC pagefault acknowledgment code is designed to extract the fields
needed for the acknowledgment from the producer-stored message so that
the consumer fields can be overloaded to return additional information.
The ASID is stored in the producer message; extract it from there to
future‑proof this logic.

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Francois Dugast <francois.dugast@intel.com>
Link: https://patch.msgid.link/20260212204227.2764054-3-matthew.brost@intel.com
This commit is contained in:
Matthew Brost 2026-02-12 12:42:27 -08:00
parent 68be2bfe4b
commit 2405ba53ff
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/xe/xe_guc_pagefault.c
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@ -17,6 +17,7 @@ static void guc_ack_fault(struct xe_pagefault *pf, int err)
u32 pdata = FIELD_GET(PFD_PDATA_LO, pf->producer.msg[0]) |
(FIELD_GET(PFD_PDATA_HI, pf->producer.msg[1]) <<
PFD_PDATA_HI_SHIFT);
u32 asid = FIELD_GET(PFD_ASID, pf->producer.msg[1]);
u32 action[] = {
XE_GUC_ACTION_PAGE_FAULT_RES_DESC,
@ -24,7 +25,7 @@ static void guc_ack_fault(struct xe_pagefault *pf, int err)
FIELD_PREP(PFR_SUCCESS, !!err) |
FIELD_PREP(PFR_REPLY, PFR_ACCESS) |
FIELD_PREP(PFR_DESC_TYPE, FAULT_RESPONSE_DESC) |
FIELD_PREP(PFR_ASID, pf->consumer.asid),
FIELD_PREP(PFR_ASID, asid),
FIELD_PREP(PFR_VFID, vfid) |
FIELD_PREP(PFR_ENG_INSTANCE, engine_instance) |