On Thu, Feb 06, 2025 at 02:10:54PM +0000, Mark Rutland wrote:
> These patches fix some issues with the way KVM manages FPSIMD/SVE/SME
> state. The series supersedes my earlier attempt at fixing the host SVE
> state corruption issue:
...
> Patch 8 addresses some mismanagement of ZCR_EL{1,2} which can result in
> the host VMM unexpectedly receiving a SIGKILL. To fix this, we eagerly
> switch ZCR_EL{1,2} at guest<->host transitions, as discussed on another
> series:
> https://lore.kernel.org/linux-arm-kernel/Z4pAMaEYvdLpmbg2@J2N7QTR9R3/
> https://lore.kernel.org/linux-arm-kernel/86o6zzukwr.wl-maz@xxxxxxxxxx/
> https://lore.kernel.org/linux-arm-kernel/Z5Dc-WMu2azhTuMn@J2N7QTR9R3/
> The end result is that KVM loses ~100 lines of code, and becomes a bit
> simpler to reason about.
Quite a bit, and much more clearly too which makes the whole thing more
managable and discoverable.
Reviewed-by: Mark Brown <broonie@xxxxxxxxxx>
Tested-by: Mark Brown <broonie@xxxxxxxxxx>
although I'm not sure I was actually testing anything you weren't.
Attachment:
signature.asc
Description: PGP signature
