diff options
| author | Michal Wajdeczko <michal.wajdeczko@intel.com> | 2026-05-27 20:37:35 +0200 |
|---|---|---|
| committer | Thomas Hellström <thomas.hellstrom@linux.intel.com> | 2026-07-02 12:29:43 +0200 |
| commit | ed8b0d731892c68b41ecbd27c952af284816dec1 (patch) | |
| tree | c48004244d474f2fc9034205f0be8c663822881d /drivers/gpu | |
| parent | 7ac3cae7a251d28e9079de07a991bd4eb2bb7fd8 (diff) | |
| download | linux-next-ed8b0d731892c68b41ecbd27c952af284816dec1.tar.gz linux-next-ed8b0d731892c68b41ecbd27c952af284816dec1.zip | |
drm/xe/pf: Don't attempt to process FAST_REQ or EVENT relays
Currently defined VF/PF relay actions use regular REQUEST messages
only and the PF shouldn't attempt to handle FAST_REQUEST nor EVENT
messages as this would result in breaking the VFPF ABI protocol
and also might trigger an assert on the PF side.
Fixes: 98e62805921c ("drm/xe/pf: Add SR-IOV GuC Relay PF services")
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
Link: https://patch.msgid.link/20260527183735.22616-1-michal.wajdeczko@intel.com
(cherry picked from commit 1714d360fc5ae2e0886a69e979095d9c7ff3568a)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_guc_relay.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/gpu/drm/xe/xe_guc_relay.c b/drivers/gpu/drm/xe/xe_guc_relay.c index 577a315854af..eed0a750d2eb 100644 --- a/drivers/gpu/drm/xe/xe_guc_relay.c +++ b/drivers/gpu/drm/xe/xe_guc_relay.c @@ -689,12 +689,17 @@ static int relay_action_handler(struct xe_guc_relay *relay, u32 origin, return relay_testloop_action_handler(relay, origin, msg, len, response, size); type = FIELD_GET(GUC_HXG_MSG_0_TYPE, msg[0]); + relay_assert(relay, guc_hxg_type_is_action(type)); - if (IS_SRIOV_PF(relay_to_xe(relay))) - ret = xe_gt_sriov_pf_service_process_request(gt, origin, msg, len, response, size); - else + if (IS_SRIOV_PF(relay_to_xe(relay))) { + if (type == GUC_HXG_TYPE_REQUEST) + ret = xe_gt_sriov_pf_service_process_request(gt, origin, msg, len, + response, size); + else + ret = -EOPNOTSUPP; + } else { ret = -EOPNOTSUPP; - + } if (type == GUC_HXG_TYPE_EVENT) relay_assert(relay, ret <= 0); |