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| author | Arthur Hanson Rasmusson <arthur@vgpu.io> | 2026-10-15 17:53:52 -0400 |
|---|---|---|
| committer | Arthur Hanson Rasmusson <arthur@vgpu.io> | 2026-10-15 17:53:52 -0400 |
| commit | 81c11ca09adf85bd314f7406a8e0d7d637726a80 (patch) | |
| tree | 724181ecb31caac3a5d86d31ee9feb71d44681d6 /kernel/gsp_rm_emulation.c | |
| parent | ecfb1278086f98161402f93bca8d3df602fbcb45 (diff) | |
| download | open-iov-81c11ca09adf85bd314f7406a8e0d7d637726a80.tar.gz open-iov-81c11ca09adf85bd314f7406a8e0d7d637726a80.zip | |
vgsp-dual: stage B+C minimal per-mdev separation (G1-G3, G5, G6, G7, G8a)
Goal 1.0: two mdevs + two QEMU guests running CUDA simultaneously.
Single-mdev behaviour is kept identical: the legacy guest-RAM record
still serves the first/only open mdev, the channel table degenerates to
the historical key, and the session flush fires at the same
last-channel-closed transition.
- G6: guest-RAM backing {file, path, ranges} per mdev (legacy record +
up to 4 vgpu-bound records); debugfs gsp-phys-guest-ram accepts an
mdev UUID as an extra first token and keeps the 4-token form; records
released on mdev cleanup and physical release.
- G7: gsp_phys_gpa_to_hpa_vgpu(vgpu, gpa, *hpa); NULL keeps the
historical first-open resolution. Forwarding operands pass the
request's vgpu; the single-guest boot-ladder pin passes NULL.
- G1: the sema-service thread services every open mdev each pass.
- G2: channel table keyed by (vgpu, h_object); per-guest ranks;
counter/scrub/opdef/pump snapshot+writeback matches per vgpu;
scrubber records per guest.
- G3: per-guest session records drive the flush; the shared learned
tables (staged G4) are only flushed when no guest has live channels.
- G5: hold/abort keyed by (vgpu, handle); dead-owner guards on the
hold resolution paths; single-inflight serialization kept.
- G8a: guest-GPA pin refused while more than one mdev is open.
Build: make -j8 clean success (vgsp.ko). No module load. See
DUAL-REPORT.md for the per-item status and live-validation plan.
Diffstat (limited to 'kernel/gsp_rm_emulation.c')
| -rw-r--r-- | kernel/gsp_rm_emulation.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/gsp_rm_emulation.c b/kernel/gsp_rm_emulation.c index 8318f56..2ffc8ac 100644 --- a/kernel/gsp_rm_emulation.c +++ b/kernel/gsp_rm_emulation.c @@ -2357,6 +2357,7 @@ static void gsp_rm_register_channel(struct gsp_emu_context *ctx, u32 h_object, return; memset(&desc, 0, sizeof(desc)); + desc.vgpu = ctx->vgpu; desc.h_object = h_object; memcpy(&desc.gpfifo_va, params + GSPRM_CHAN_GPFIFO_OFFSET, 8); memcpy(&desc.gpfifo_entries, params + GSPRM_CHAN_GPFIFO_ENTRIES, 4); @@ -3244,7 +3245,7 @@ static void gsp_rm_handle_free(struct gsp_emu_context *ctx, const u8 *elem, memcpy(&hObjOld, params + 8, 4); memset(params + 12, 0, 4); /* status = NV_OK */ - gsp_sema_service_channel_del(hObjOld); + gsp_sema_service_channel_del(ctx->vgpu, hObjOld); /* * Retire event records that refer to the object being freed. Posting an |