Re: [PATCH] KVM: arm64: Synchronize SMEN on vcpu schedule out

[Mark Brown]

On Tue, Dec 20, 2022 at 10:15:18AM +0000, Marc Zyngier wrote:
> Dong Bo <dongbo4@xxxxxxxxxx> wrote:

> > If we have VHE and need to reenable SME for host in
> > kvm_arch_vcpu_put_fp, CPACR.SMEN is modified from 0 to 1. Trap
> > control for reading SVCR is modified from enable to disable.
> > Synchronization is needed before reading SVCR later in
> > fpsimd_save, or it may cause sync exception which can not be
> > handled by host.

Reviewed-by: Mark Brown <broonie@xxxxxxxxxx>

Attachment: signature.asc
Description: PGP signature