On Fri, 18 Mar 2022 20:49:38 +0000, Oliver Upton wrote:
> This reverts commit bc0b99a2a74047707db73ba057743febf458fd90.
>
> Thanks to some digging from Andre [1], we know that kvmtool commit
> bc0b99a2a740 ("kvm tools: Filter out CPU vendor string") was intended
> to work around a guest kernel bug resulting from kernel commit
> 5bbc097d8904 ("x86, amd: Disable GartTlbWlkErr when BIOS forgets it").
> Critically, KVM does not implement the MC4 mask MSR and instead injects
> a #GP into the guest. On guest kernels without commit d47cc0db8fd6
> ("x86, amd: Use _safe() msr access for GartTlbWlk disable code") this is
> unexpected and causes a kernel oops.
>
> [...]
Applied to kvmtool (master), thanks!
[1/1] Revert "kvm tools: Filter out CPU vendor string"
https://git.kernel.org/will/kvmtool/c/faae833a746f
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
