Re: [PATCH v2 0/3] hw/pflash: implement update buffer for block writes

[Michael Tokarev]

08.01.2024 19:08, Gerd Hoffmann:
> When running qemu with edk2 efi firmware on aarch64 the efi
> variable store in pflash can get corrupted.  qemu not doing
> proper block writes -- flush all or nothing to storage -- is
> a hot candidate for being the root cause.
>
> This little series tries to fix that with an update buffer
> where block writes are staged, so we can commit or discard
> the changes when the block write is completed or canceled.

It looks like we can pick this up for stable too.  It's not
usual to pick up new features for stable, but this one fixes
actual bug and if not applied, can easily lead to data corruption.

I'd pick it up for 8.2.x and 8.1.x at least.

Thoughts?

Thanks,

/mjt