[PATCH v20 00/12] ALSA: virtio: fix capture accounting

[Joonho Lee <mynameisjune111@gmail.com>]

Hi Takashi,

This cumulative resend keeps the twelve-patch series on the same base,
a4311e9447bbb219044db38897f95be112f46a8a. It covers PCM stop-threshold
sampling, locked partial-progress reporting, the optional reset operation,
VirtIO ACK error propagation and recovery, PCM and control DMA ownership,
signal-safe teardown, staged capture lifecycle and work prioritization, and
capture parameter documentation.

Relative to v19, patch 6 moves the virtqueue initialization summary into the
commit body and removes the unsupported event-message ownership claim. Its
source diff is unchanged. Patch 7 also rejects ordinary indirect capture
appl_ptr advances that are not aligned to runtime->min_align before converting
the frame delta to bytes.

Validation:

- The final ARM64 W=1 build uses KASAN, PROVE_LOCKING, and LOCKDEP. The
  cumulative stage build checks patches 7–12 incrementally.
- A synthetic exact-validator case rejects an odd frame delta for 4-bit
  samples before indirect accounting changes. An aligned sub-byte delta and a
  byte-aligned frame delta pass. QEMU does not advertise IMA_ADPCM, so the
  sub-byte case uses synthetic runtime geometry rather than a real stream.
- An actual S16_LE capture accepts two half-period ACKs for one completed
  period and then recovers a full-period read.
- Ordinary and staged capture passed RW and MMAP reset/reopen runs. The
  14-segment oracle matched the QEMU sample sequence.
- Inherited v19 raw SYNC_PTR and paused-lifecycle evidence covers the existing
  accounting state machine. The transport timeout and PCI evidence covers
  unchanged control and teardown paths; these references are listed in the
  manifest.

No physical-device validation or KCSAN run was performed.

Previous version:
https://lore.kernel.org/r/20261106161838.94308-1-mynameisjune111@gmail.com/

AI assistance was used for analysis, implementation, and test preparation.
Assisted-by: LLM

Thanks,
Joonho

base-commit: a4311e9447bbb219044db38897f95be112f46a8a