VF2GUC_RESFIX_DONE(9)

💅 VF2GUC_RESFIX_DONE(9) 💅

okay so bestie, this is the VF2GUC_RESFIX_DONE(9) page from the Kernel API Manual, and it's giving “post-migration recovery check-in” energy. 💖

This action is used by VF to inform the GuC that the VF KMD has completed post-migration recovery steps. From GuC VF compatibility 1.27.0 onwards, it shall only be sent after posting RESFIX_START and that both MARKER fields must match. Like, no cap: those markers gotta match. 💅

This message must be sent as MMIO HXG Message_.

Updated since GuC VF compatibility 1.27.0. ✨

bestie, from 1.27.0 onwards this only goes out after RESFIX_START, and both MARKER fields have to match. Not negotiable. 🚨

Here's the table with GUC_HXG_TYPE_REQUEST_ — literally copy the bits, bestie:

┌────────────────────────────┐
│         Bits   Description │
└────────────────────────────┘
+===+=======+==============================================================+
| 0 |    31 | ORIGIN = GUC_HXG_ORIGIN_HOST_
| |
+-------+--------------------------------------------------------------+
|   | 30:28 | TYPE = GUC_HXG_TYPE_REQUEST_
| |
+-------+--------------------------------------------------------------+
|   | 27:16 | DATA0 = MARKER = MBZ (only prior 1.27.0)
| |
+-------+--------------------------------------------------------------+
|   | 27:16 | DATA0 = MARKER - can't be zero (1.27.0+)
| |
+-------+--------------------------------------------------------------+
|   |  15:0 | ACTION = _`GUC_ACTION_VF2GUC_RESFIX_DONE` = 0x5508
|

And the response table with GUC_HXG_TYPE_RESPONSE_SUCCESS_ is giving:

┌────────────────────────────┐
│         Bits   Description │
└────────────────────────────┘
+===+=======+==============================================================+
| 0 |    31 | ORIGIN = GUC_HXG_ORIGIN_GUC_
| |
+-------+--------------------------------------------------------------+
|   | 30:28 | TYPE = GUC_HXG_TYPE_RESPONSE_SUCCESS_
| |
+-------+--------------------------------------------------------------+
|   |  27:0 | DATA0 = MBZ
|

🌈 SEE ALSO 🌈

• kernel file: ./drivers/gpu/drm/xe/abi/guc_actions_sriov_abi.h
• GUC2PF_RELAY_FROM_VF(9)
• PF2GUC_RELAY_TO_VF(9)
• GUC2VF_RELAY_FROM_PF(9)
• VF2GUC_RELAY_TO_PF(9)
• GUC2PF_ADVERSE_EVENT(9)
• GUC2PF_VF_STATE_NOTIFY(9)
• VF2GUC_MATCH_VERSION(9)
• PF2GUC_UPDATE_VGT_POLICY(9)
• PF2GUC_UPDATE_VF_CFG(9)
• PF2GUC_VF_CONTROL(9)
• VF2GUC_VF_RESET(9)
• VF2GUC_QUERY_SINGLE_KLV(9)
• PF2GUC_SAVE_RESTORE_VF(9)
• VF2GUC_RESFIX_START(9)

okay final sign-off bestie: this page's source is ./drivers/gpu/drm/xe/abi, it's dated October 2026, and the page name is VF2GUC_RESFIX_DONE(9) — bye, go make those MARKER fields match 🫶✨