update ZFS for backport of Intel AMX errata fix

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From the upstream commit [0] that this update pulls in:

> Intel SPR erratum SPR4 says that if you trip into a vmexit while
> doing FPU save/restore, your AMX register state might misbehave...
> and by misbehave, I mean save all zeroes incorrectly, leading to
> explosions if you restore it.
>
> Since we're not using AMX for anything, the simple way to avoid
> this is to just not save/restore those when we do anything, since
> we're killing preemption of any sort across our save/restores.
>
> If we ever decide to use AMX, it's not clear that we have any
> way to mitigate this, on Linux...but I am not an expert.

[0]: https://github.com/openzfs/zfs/commit/c65aaa83876f9764f9017db278cefa453e1a3f5b

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

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Thomas Lamprecht

2023-10-10 14:56:04 +02:00

parent 220839dc91

commit d53c5ae125

1 changed files with 1 additions and 1 deletions

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submodules/zfsonlinux

+1 -1

Submodule submodules/zfsonlinux updated: aa26132525...9e8946d4b9