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* gsp-phys: mdev-owned backend lifecycle (P1)Arthur Hanson Rasmusson10 days
| | | | | | | | | | | | | | | | Add the gsp_phys_mdev_owned ownership selector (default 0: unchanged load-time module-owned claim/boot). With 1, module load claims nothing; the first mdev create starts a refcounted backend session whose claim+boot runs asynchronously from a work item, so mdev create and init_work never block. The last mdev remove releases after the emulation thread is stopped. Failures are fail-open: the backend stays OFF and the mdev keeps serving the emulation path. nv_vgpu_exit now gates the session STOPPING under the session lock, drains the emulation threads via mdev_unregister_driver(), and only then releases the claim; the module-owned path keeps its previous release position. A start while STOPPING is refused and a concurrent second stopper cannot release twice. No forwarding is added.
* gsp-phys: backend session API skeleton (P0, inert)Arthur Hanson Rasmusson10 days
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* gsp-phys: encode the GPFIFO GET field correctly so the pushbuffer fetch uses ↵Arthur Hanson Rasmusson11 days
| | | | the mapped VA
* gsp-phys: drain and decode the status queue on a failed CE submissionArthur Hanson Rasmusson11 days
| | | | | | | | | | | | | | | | After a doorbell the GSP-RM status ring accumulated unconsumed records that nothing drained: the host readPtr stayed behind the writePtr and the engine's error text was never decoded. Add a bounded drain (max 64 records) using the existing validated ring walk: each record is logged with its function/status/seqNum, function 0x1006 (OS_ERROR_LOG) is decoded into exceptType/runlistId/chid/prevXid/errString, and function 0x1020 (GSP_POST_NOCAT_RECORD) into recType/errorCode/subsystem/ bugcheck/faultingEngine plus a bounded printable view of the diagnostic buffer. The host read pointer advances per consumed record (the normal consumer side), so the ring keeps free space. Stage 4's poll-timeout path drains before returning -ETIMEDOUT, and a new read-only debugfs file gsp-phys-status-drain triggers one bounded drain per read. No locks are taken and no device register is written.
* gsp-phys: submit the CE copy in virtual mode through the mapped VA windowArthur Hanson Rasmusson11 days
| | | | | | | | | | SET_SEMAPHORE_A/B always take a GPU VA and the channel is USER, so the release cannot target a raw DMA address and physical-mode src/dst is not permitted. Map the src/dst/semem pages at VA 0x102000/0x103000/0x104000 (small-PT slots 258/259/260) in the existing channel PDB, push the semaphore VA, drop the SET_SRC/DST_PHYS_MODE pairs and clear LAUNCH_DMA bits 12/13 (0x18d: Pipelined|Flush|Release-one-word|Pitch). The block is now 13 method pairs / 26 dwords; GPFIFO/PUT/doorbell/poll/memcmp are unchanged.
* gsp-phys: keep the channel USERD in host-writable sysmem for the ladderArthur Hanson Rasmusson11 days
| | | | | | | | | | | | Revert the USERD selection to the client sysmem chunk unconditionally: the ladder advances GP_PUT by writing that chunk directly, and there is no BAR1/PRAMIN aperture here to reach an FBMEM page, so an FBMEM USERD would leave the host write invisible to the hardware USERD the engine polls. Remove the now-dead FBMEM USERD allocator, handle and state; the FBMEM error-notifier allocation path is unchanged. The PDB hierarchy, VA-based gpFifoOffset and ring-entry GET, TSG schedule insurance, logs and asserts from the PDB change are kept. Logs now say userd=sysmem (host-writable) so the path in use is unambiguous.
* gsp-phys: build the channel page directory and submit the CE copy through ↵Arthur Hanson Rasmusson11 days
| | | | | | | | | | | | GPU VAs Fill the external VAS root's GP10X v2 hierarchy (root/PD2/PD1/PD0-small/PT) around a 2 MB VA window so the PDBMA/CE can fetch the GPFIFO and pushbuffer by GPU VA; gpFifoOffset and the GPFIFO ring entry GET now carry those VAs. Allocate the USERD page in FBMEM (class 0x40, matching the reference default) with the sysmem chunk as fallback, and add the advisory TSG-level GPFIFO_SCHEDULE 0xa06c0101 after the channel BIND/schedule. Log the window, table DMAs and entries, and expose them in the debugfs state snapshot.
* gsp-phys: allocate the FBMEM notifier with the RM client heap owner; make ↵Arthur Hanson Rasmusson11 days
| | | | | | | | | | | | | | | | | the notif index advisory The class-0x40 NV_MEMORY_ALLOCATION_PARAMS reached the server with owner=0, which the class constructor rejects with NV_ERR_INVALID_OWNER (0x39). Set owner=HEAP_OWNER_RM_CLIENT_GENERIC (0xDEAF000C) and internalflags= NVOS32_ALLOC_INTERNAL_FLAGS_SKIP_SCRUB (0x4), matching the reference notifier allocation. Add static_asserts pinning owner/attr/size/offset/hVASpace/ internalflags to the reference 128-byte ABI so a layout drift breaks the build. SET_WORK_SUBMIT_TOKEN_NOTIF_INDEX (0xc36f010a, index 3) now logs an advisory warning on failure (no error-context object exists, so the server returns NV_ERR_OBJECT_NOT_FOUND 0x57) and the stage continues to GET_WORK_SUBMIT_TOKEN: the server writes the work-submit token before the notifier update, so the token is independent of the notifier object.
* gsp-phys: FBMEM error notifier and the bind/notif-index/token order before ↵Arthur Hanson Rasmusson11 days
| | | | submission
* gsp-phys: use the 4-entry GP10X root format for the VAS page directoryArthur Hanson Rasmusson11 days
| | | | | | | | | The TU104 GMMU root level has 2 index bits (4 PDEs of 2^47 bytes each), so the server's vaLimitNew = (numEntries << 47) - 1 must stay within its vaLimitMax = 2^49-1; numEntries=256 computed 2^55-1 and drew NV_ERR_INVALID_ARGUMENT (0x1f). Send 4 entries (32 bytes of the 4 KB page-aligned VASPDB chunk) and log the value on failure. The aperture/flags word is unchanged (0x0a, SYSMEM_NONCOH + ALL_CHANNELS).
* gsp-phys: allocate an externally-owned VAS with a page directory before the ↵Arthur Hanson Rasmusson11 days
| | | | channel ladder (V5)
* gsp-phys: remove the GSP-owned channel variant that wedges the RM taskArthur Hanson Rasmusson11 days
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* gsp-phys: channel-alloc variant matrix (device parent, skip-scrubber, ↵Arthur Hanson Rasmusson11 days
| | | | gsp-owned, server-allocated memdescs)
* gsp-phys: allocate the channel group under the device handle (valid parent) ↵Arthur Hanson Rasmusson11 days
| | | | and decode rm-call statuses
* gsp-phys: rm-call diagnostics (failed-reply payload, RM log dump) and the ↵Arthur Hanson Rasmusson11 days
| | | | static-config-handle ladder path
* gsp-phys: add the host RM-client ladder (gsp-phys-rm-call) for real object ↵Arthur Hanson Rasmusson11 days
| | | | allocation and a first real copy
* gsp-phys: register the RM log ring correctly, send raw config-space ↵Arthur Hanson Rasmusson11 days
| | | | | | | | | | | | | | | | | | | identity, and request the full static-config payload The RM log-ring init argument carried a malformed libos id (LOGM), so the server never mapped the ring and its early failure path was invisible. The pre-boot system-info payload carried unpacked 16-bit identity fields; the server expects the raw config-space dwords (device<<16|vendor), so its GPU device-id read back as zero and the static-config device-name lookup returned NOT_SUPPORTED. The static-config RPC must be sized to the full reply payload, and the guest-system-info RPC is sent first, matching the reference order. Live result: GSP-RM completes initialization (init-done rpc_result=0), serves the 1656-byte static config (name, FB size, handles, PDE bases), and shuts down cleanly through the unload RPC.
* gsp-phys: populate the chipset/CL block of the pre-boot system infoArthur Hanson Rasmusson11 days
| | | | | | | | | | | | | | | | | | | | | | Fill the GspSystemInfo chipset fields the production client syncs before the GSP boot instead of leaving them zero: - clPdbProperties (bitmask in the client's clSyncWithGsp order): bit 0 (config space accessible, from the OS MCFG/ECAM availability), bit 7 and bit 21 (Intel Skylake-family upstream-port setup: ASPM POR list, root-port nosnoop WAR), bit 13 (upstream port ASPM L1 capable), bit 27 (LTR supported+enabled up to the root port) and bit 32 (IO coherent). PDB_PROP_CL_UNSUPPORTED_CHIPSET is never assigned by the client, so the faithful unmatched-chipset value is 0. - Chipset = 0 (CS_UNKNOWN) for a host bridge with no chipsetInfo[] entry, the reference's no-match fallback. - FHBBusInfo/chipsetIDInfo: 10-byte BUSINFO blobs of the first host bridge of the GPU's domain (device, vendor, subdevice, subvendor, revision), with the subsystem-capability fallback on chipsetIDInfo. acpiMethodData is intentionally sent all-zero (bValid=0): no ACPI/AML calls are made and every consumer tolerates the no-data encoding. All device lookups use refcounted pci_get_device()/pci_dev_put().
* gsp-phys: drop RmDisableDisplay from the registry profile (display-enabled ↵Arthur Hanson Rasmusson11 days
| | | | | | | | | | | | | | | | experiment) The working distribution driver runs with display enabled; the RmDisableDisplay=1 deviation changes board/display state and may be implicated in the devid/board validation failure blocking GSP-RM init. Regenerate the profile without it: the 35 host default parameters plus RMDevidCheckIgnore=1, 36 entries total, display brought up as a stock boot would. Same canonical packing: size 1344, numEntries 36, rpc.length 1376, record 1392 (8-byte aligned), one 4 KB element. The module is unchanged apart from comments and the prepared log line, which now reports 'host default profile + RMDevidCheckIgnore=1, display enabled'.
* gsp-phys: add RMDevidCheckIgnore to the registry profileArthur Hanson Rasmusson11 days
| | | | | | | | | | | | | Append RMDevidCheckIgnore=1 (dword) to the pre-boot SET_REGISTRY profile, after the 35 host default parameters and RmDisableDisplay=1. The key is the registry escape for the static-config devid/board check that currently fails GSP-RM init; every existing entry is unchanged. Regenerated kernel/gsp_phys_registry_img.h with the same canonical packing (values inline, names-only blob): size 1377, numEntries 37, rpc.length 1409, one 4 KB element. The module code is unchanged apart from comments: the submission and the prepared log line read the size and entry count from the generated blob/macros.
* gsp-phys: program the GPU timer before the GSP kickArthur Hanson Rasmusson11 days
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* gsp-phys: send the host default registry profile with RmDisableDisplay for ↵Arthur Hanson Rasmusson11 days
| | | | | | | | | | | | | | | | | | | | | | | | | GSP-RM init The pre-boot SET_REGISTRY (function 73) submitted an empty PACKED_REGISTRY_TABLE. Replace it with the default registry profile the host driver sends before boot: the 35 default dword parameters from its parameter table plus RmDisableDisplay=1. The display key makes the GSP-RM display-presence check treat display as absent, so the display engine is removed during pre-init instead of being brought up on a headless boot. The payload is generated into kernel/gsp_phys_registry_img.h as a PACKED_REGISTRY_TABLE blob (8-byte header, 36 16-byte dword entries, NUL-terminated names after the array; values inline; no value bytes in the name blob, matching the reference packer): size 1342, numEntries 36, rpc.length 1374, one 4 KB element. fn72 is unchanged. The payload length is not 8-byte aligned (record 1390 -> 1392); the TX producer already zero-pads the kvzalloc'd staging record and folds the XOR checksum over the padded length, exactly like the reference producer zero-pads before _checkSum32, so no producer change is needed. The blob is static const data: no heap, no new stack frame, and a submit failure still aborts the boot. The prepared log line now prints the payload size and entry count.
* gsp-phys: queue the pre-boot GSP_SET_SYSTEM_INFO and SET_REGISTRY async RPCsArthur Hanson Rasmusson11 days
| | | | | | | | | | | | | | | | | | | The real-GSP boot path staged the message queue but never queued the two fire-and-forget init RPCs the production client places in it before the booter starts. GSP-RM therefore created its GPU object without any system information and aborted RM init (live GSP_INIT_DONE rpc_result=0x59), with the resource-manager's object-database lookups asserting from the first journal record. Submit function 72 (GSP_SET_SYSTEM_INFO, 928-byte v17_00 payload carrying the BAR physical bases, domain/bus/slot, PCI IDs, the BAR0 config-mirror offset, link/FLR capabilities and upstream-port flags read from the pci_dev) and function 73 (SET_REGISTRY, header-only empty table, which the server explicitly accepts) through the existing submit-only queue producer after all stage-3d preconditions and before the GSP falcon reset/Booter Load kick. The wire layouts are re-declared in the module with per-field static asserts against the reference ABI; payloads are heap-allocated, so no new stack frames are introduced.
* gsp-phys: key the NOCAT summary on the truncated stringsArthur Hanson Rasmusson11 days
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* gsp-phys: capture GSP-RM NOCAT journal records from the status queueArthur Hanson Rasmusson11 days
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* gsp-phys: use the reference default for a zero sequencer poll timeoutArthur Hanson Rasmusson11 days
| | | | | | | | | | | | A zero REG_POLL timeout dword is the reference's GPU_TIMEOUT_DEFAULT sentinel: the reference substitutes the platform default (microseconds; 4 s in graphics mode, the default platform) before waiting. The executor clamped zero to the 1 us floor, i.e. one jiffy, so a poll that was not already satisfied failed the boot in 1 ms. The live 0x1002 sequencer element contains exactly one REG_POLL with timeout=0 (addr 0x110040); substitute the 4 s graphics-mode default and then keep the existing 1 us .. 10 s clamp.
* gsp-phys: accept the real GSP-RM sequencer buffer size in stage 3eArthur Hanson Rasmusson11 days
| | | | | | | | | The live 0x1002 element carries bufferSizeDWord=0x3FE2 (16354) - the size of GSP-RM's own command buffer, not the message. The executor's 0x1000 sanity cap refused it, so the sequencer was never run and GSP_INIT_DONE was never observed. The reference imposes no upper bound (only nonzero and greater than cmdIndex); raise the cap to a sanity ceiling and document that the real execution bound is cmdIndex against the element payload.
* gsp-phys: harden the RM transport and add the static-info probeArthur Hanson Rasmusson11 days
| | | | | | Applies the adversarial review fixes for the command-queue TX and unload RPC: the unload RPC is gated on GSP-RM init-done, debugfs fops pin the module, REG_POLL timeouts use microseconds, the host status readPtr is published, TX free space is checked, swap flags and barriers are corrected, and the legacy payload fallback is opt-in. Generalizes the transport to multi-element records and a reply-matching status-queue reader, and adds a debugfs probe that round-trips GET_GSP_STATIC_INFO (with a SET_GUEST_SYSTEM_INFO fallback), decodes the server configuration, and a read-only state snapshot file. All gated by gsp_phys_boot; the normal load path is unchanged.
* gsp-phys: command-queue TX and the GSP-RM unload RPC for clean teardownArthur Hanson Rasmusson11 days
| | | | Adds a minimal msgq producer on the command queue (element layout, checksum, sequence, dma_wmb before writePtr, doorbell) and submits the UNLOADING_GUEST_DRIVER RPC so GSP-RM shuts down and sets the scratch14 handoff bit the Booter Unload gate needs. Release attempts the RPC once before quiescing when a boot ran; on-demand testing is available through the debugfs file gsp-phys-unload-rpc while the module owns the GPU. GSP-RM processor suspend is polled on the GSP mailbox.
* gsp-phys: real GSP boot stages 3d/3e and the GSP-RM run-sequencer eventArthur Hanson Rasmusson11 days
| | | | | | | | Stage 3d stages the GSP-RM boot from host sysmem (FMC, radix3 over the GSP-RM ELF, signature, message queues, libos LOGINIT/LOGRM/RMARGS and GSP arguments) and runs Booter Load on SEC2: GSP RISC-V reset, libos mailbox, IMEM/DMEM direct load, BOOTVEC=0, M0==0, FALCON_OS, RISC-V active. Stage 3e links the status queue and polls for GSP-RM events; it now also executes the inline run-sequencer command buffer (event 0x1002) against BAR0 (REG_WRITE/MODIFY/POLL, DELAY, STORE, CORE_* including CORE_RESUME) and then waits for GSP_INIT_DONE 0x1001. Gated by gsp_phys_boot / gsp_phys_boot_dryrun (default off; the normal load path writes nothing). gsp_phys_fwsec=1 without gsp_phys_boot=1 is refused: a FWSEC-only carve cannot pass the booter-unload handoff gate. Release quiesces the GSP, runs the existing FWSEC-SB/booter-unload teardown and frees all staging. tools/gen_gsp_bindata.py decodes the public generated archives into the Booter Load image (prod signature patched at 0x8700) and the GSP-RM boot (FMC) image; both are self-checked at build time.
* gsp-phys: fix the booter-unload handoff seed (correct scratch register/access)Arthur Hanson Rasmusson11 days
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* gsp-phys: fix booter-unload teardown (WPR meta/args) so WPR2 is cleared on ↵Arthur Hanson Rasmusson11 days
| | | | release
* gsp-phys: set PCI bus-master for the claimed GPU (bootloader host DMA)Arthur Hanson Rasmusson11 days
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* gsp-phys: FWSEC failure diagnostics (falcon scratch/mailbox, DMEM/IMEM readback)Arthur Hanson Rasmusson11 days
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* gsp-phys: correct the FWSEC interface-patch size and staging loggingArthur Hanson Rasmusson11 days
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* gsp-phys: read-only FWSEC dry-run mode; match the 6-byte BIT token decodeArthur Hanson Rasmusson11 days
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* gsp-phys: fix the WPR2-up release hand-back and tighten FWSEC/VBIOS checksArthur Hanson Rasmusson11 days
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* gsp-phys: stage 3c FWSEC via VBIOS BIT image plus failure recoveryArthur Hanson Rasmusson11 days
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* gsp-phys: decode the real FB size for the boot layout (stage 3b-prime)Arthur Hanson Rasmusson11 days
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* gsp-phys: hold a GPU runtime-PM reference across the claim window (udev ↵Arthur Hanson Rasmusson11 days
| | | | bind-event hardening)
* gsp-phys: harden the D0 lock (pre-lock readiness, no unlock without rebind, ↵Arthur Hanson Rasmusson11 days
| | | | strict board check)
* gsp-phys: keep the dGPU power domain in D0 across the claim/release handoffArthur Hanson Rasmusson11 days
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* gsp-phys: stage-3b boot layout plus a hazard gate for the claim pathArthur Hanson Rasmusson11 days
| | | | | | | | | | | | | | Stage 3b allocates the three coherent boot-argument pages and fills the 256-byte WPR metadata from the computed Turing FB layout; no device registers are written (uncommitted work from the previous session, committed as-is behind the new gate). The physical claim unbinds the distribution NVIDIA driver; on this host that power-gates the dGPU board and the re-bind can leave the GPU unresponsive and hard-freeze the system (observed twice, 2026-09-30, no crash record). The claim now refuses unless the new gsp_phys_hazard_ack module parameter is also set, so a stale command line cannot re-trigger it. See the hazard note at the top of gsp_phys_gpu.c.
* gsp-phys: boot-layout stage 3b - boot-argument pages, WPR meta and FB layout ↵Arthur Hanson Rasmusson11 days
| | | | (no device writes)
* gsp-phys: read-only falcon state probe for the boot rungArthur Hanson Rasmusson11 days
| | | | | | | Logs both falcons' run/halt bits, the RISC-V active bit, WPR2 up/down and the security-falcon mailboxes when the physical GPU is claimed. Verified live: GSP and SEC2 halted, RISC-V inactive, WPR2 down (HI=0). This is the read-only half of the real boot rung; no device state is written.
* gsp-phys: claim the physical GPU and stage real GSP firmware (backend rungs 1-2)Arthur Hanson Rasmusson11 days
| | | | | | | | | | | | | | | | Rung 1 (ownership): a default-off gsp_phys_gpu module param; on claim the distribution driver is released from 10de:1ed3, our pci_driver binds it, BAR0/1/3 are mapped and the falcon state is sampled; release unbinds ours and rebinds the distribution driver. Verified live: claim reads BOOT0=0x164000a1 with the falcon halted and mailboxes clear; rmmod rebinds nvidia and nvidia-smi stays healthy. Rung 2 (firmware): while the device is owned, gsp_phys_fw (default nvidia/570.211.01/gsp_tu10x.bin) is fetched with request_firmware, checked as ELF64 RISC-V, and its sections are logged (.fwimage, .fwversion, .fwsignature_tu10x). The image is held for the boot rung. The claim is default-off; the emulation path is unchanged.
* sema-svc: rewind replays may only be skipped when their release was deliveredArthur Hanson Rasmusson12 days
| | | | | | | | | | | | | | | | | | | | The per-put-epoch consumed-slot skip must not suppress a slot whose entry was consumed *without* delivering its release (the CE grace expiry in real mode): the driver-API smoke test's CE pushes are consumed unreadable before their ring pin lands and depend on the pin-batch rewind replaying them once the translation appears. The skip now applies only to slots whose consumption delivered a release: - tail consumption records a slot when the iteration decoded a release (svc_rel_count delta); the sweep-delivered entry_want consume and the fake-release consume always record - the grace-expiry consume records only when a recovery (fake or sema_rel_recover) delivered the release - svc_fake_release counts as a delivered release So real-mode replays still re-process undelivered entries, while the runtime-client case (readable pushes delivered immediately) keeps the fast path that removed the 8 s stalls.
* sema-svc: detect a decoded release by count, not by the (unchanging) VAArthur Hanson Rasmusson12 days
| | | | | | | | | | | | | | The pump decided "this push carried a release" by comparing the last decoded release VA before/after svc_decode_stream. Consecutive pushes on a channel release to the SAME tracking-semaphore VA (UVM's tracker pattern), so every push after the first read as release-less: the entry was held for the full CE grace window (observed: exactly one push consumed per 8 s, gating the whole runtime init; the release itself had already been applied by the decode, only the pump's bookkeeping stalled). svc_rel_count now increments on every decoded release (host sem block, REPORT_SEM block, CE launch-DMA release) and the pump compares counts at all three sites (initial decode, rescue re-route, rescued-page retry).
* sema-svc: never re-process a GPFIFO slot already consumed in the put epochArthur Hanson Rasmusson12 days
| | | | | | | | | | | | | | | | | | | A pin-batch rewind replays recently consumed entries. An old entry whose rescue cannot validate any candidate then sits in the CE grace path - and because the client's put has advanced since, the replayed entry no longer matches any "new" expectation: it waits the full 8 s grace, blocking every later entry behind it on that channel. Observed live: the first push of rank 0 re-processed and skipped twice, 38 s apart, while eight later pushes queued behind it. The pump now marks each consumed slot in a per-channel bitmap valid for the current put epoch (cleared when put wraps, so a recycled slot in the next epoch is processed normally) and consumes a replayed slot immediately. Rewinds still refresh readable entries; they simply no longer resurrect entries that were already handled. Evidence: real-release watcher cycle, replay-after-put-advance no longer produces 'skipping stale entry ... after 8000 ms grace' for old slots.
* sema-svc: consume rewind replays and sweep-delivered CE entries at onceArthur Hanson Rasmusson12 days
| | | | | | | | | | | | | | | | | | | | | Two stalls serialized the runtime client's init into one 8 s CE grace window per push: - a pin-batch rewind replays recently consumed GPFIFO slots; re-examining a consumed slot runs the rescue and then holds it for the full grace window again (observed: the same VA 'skipped after 8000 ms grace' twice, 38 s apart). The pump now records each consumed slot with the put value it was consumed at (32-entry per-channel replay ring, persisted across passes) and consumes a replayed slot whose producing put has not advanced immediately. - the content sweep applies releases from RAM pages before the pump reads their entries, so the pool advances past the entry's payload while it is pending. entry_want (recorded on first examination) now detects that on both the unreadable-rescue and the readable-no-release paths and consumes the entry instead of waiting the grace window. Evidence: real-release watcher cycle, pool semaphore advances no longer gated at 8 s intervals once the replay skip engages.
generated by cgit v1.2.3 (git 2.39.1) at 2026-10-12 13:52:04 +0000