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| author | Arthur Hanson Rasmusson <arthur@vgpu.io> | 2026-09-21 19:42:17 -0400 |
|---|---|---|
| committer | Arthur Hanson Rasmusson <arthur@vgpu.io> | 2026-09-21 19:42:17 -0400 |
| commit | 9b44eb71ca2392606b74a15f7f330482be3e826a (patch) | |
| tree | 52fe50af7c66feb807ad1e82d768628e4b1ca4ca /kernel/gsp_rm_emulation.c | |
| parent | 8ddb13c9d96be05b859056788740330b5653e72b (diff) | |
| download | open-iov-9b44eb71ca2392606b74a15f7f330482be3e826a.tar.gz open-iov-9b44eb71ca2392606b74a15f7f330482be3e826a.zip | |
kernel: INTR_GET_KERNEL_TABLE subtreeMap = intrInitSubtreeMap_TU102 values
Driver's intrCacheIntrFields requires subtree(ACCESS_CNTR=72)=1 within
subtreeMap[UVM_OWNED] and UVM_SHARED to be a single subtree. Zeroed map
failed RmInitNvDevice state load ('unexpected subtree').
Map matches intrInitSubtreeMap_TU102 (what physical-path guests get from
real GSP-RM): ESCHED{3,3} ESCHED_NOTIF{0,0} UVM_OWNED{1,1} UVM_SHARED{2,2},
DEFAULT/RUNLIST/RUNLIST_NOTIF=INVALID(0xFF). Struct retyped to 7x2B;
out_params_size spans full struct (driver reads subtreeMap at offset 2052).
Verified: probe passes state load, /dev/nvidia0 persists.
Diffstat (limited to 'kernel/gsp_rm_emulation.c')
| -rw-r--r-- | kernel/gsp_rm_emulation.c | 33 |
1 files changed, 29 insertions, 4 deletions
diff --git a/kernel/gsp_rm_emulation.c b/kernel/gsp_rm_emulation.c index 4ce65ba..5ad557f 100644 --- a/kernel/gsp_rm_emulation.c +++ b/kernel/gsp_rm_emulation.c @@ -734,12 +734,37 @@ static void gsp_rm_handle_intr_kernel_table(struct gsp_emu_context *ctx, sizeof(struct tu104_intr_table_entry); memcpy(intr_params->table, tu104_intr_kernel_table, copy_size); - /* Subtree map: all entries in DEFAULT category (0) */ - memset(intr_params->subtreeMap, 0, sizeof(intr_params->subtreeMap)); + /* Subtree map - must match intrInitSubtreeMap_TU102 (the values + * physical-path guests receive from real GSP-RM): + * ESCHED_DRIVEN_ENGINE = {3,3} (STALL_SUBTREE) + * ESCHED_DRIVEN_ENGINE_NOTIF = {0,0} + * UVM_OWNED = {1,1} (fault 64, access cntr 72) + * UVM_SHARED = {2,2} (doorbells/GSP/DISP) + * DEFAULT/RUNLIST/RUNLIST_NOTIF = INVALID (unset on Turing) + * intrCacheIntrFields requires accessCntrSubtree(=1) within + * UVM_OWNED and UVM_SHARED to be a single subtree. */ + { + u32 c; + + for (c = 0; c < TU104_INTR_CATEGORY_ENUM_COUNT; c++) { + intr_params->subtreeMap[c].subtreeStart = TU104_INTR_INVALID_SUBTREE; + intr_params->subtreeMap[c].subtreeEnd = TU104_INTR_INVALID_SUBTREE; + } + intr_params->subtreeMap[TU104_INTR_CATEGORY_ESCHED_DRIVEN_ENGINE].subtreeStart = 3; + intr_params->subtreeMap[TU104_INTR_CATEGORY_ESCHED_DRIVEN_ENGINE].subtreeEnd = 3; + intr_params->subtreeMap[TU104_INTR_CATEGORY_ESCHED_DRIVEN_ENGINE_NOTIFICATION].subtreeStart = 0; + intr_params->subtreeMap[TU104_INTR_CATEGORY_ESCHED_DRIVEN_ENGINE_NOTIFICATION].subtreeEnd = 0; + intr_params->subtreeMap[TU104_INTR_CATEGORY_UVM_OWNED].subtreeStart = 1; + intr_params->subtreeMap[TU104_INTR_CATEGORY_UVM_OWNED].subtreeEnd = 1; + intr_params->subtreeMap[TU104_INTR_CATEGORY_UVM_SHARED].subtreeStart = 2; + intr_params->subtreeMap[TU104_INTR_CATEGORY_UVM_SHARED].subtreeEnd = 2; + } + /* The driver reads subtreeMap at offset 2052 (after the full + * 128-entry array), so the reply must span the whole struct - + * not just the used entries. */ *out_params_size = offsetof(struct tu104_intr_get_kernel_table_params, - table) + - copy_size + + subtreeMap) + sizeof(intr_params->subtreeMap); *out_status = 0; |