[PATCH 2/3] KVM: arm64: Allow AArch32 PSTATE.M to be restored as System mode

[Oliver Upton]

On Fri, May 24, 2024 at 03:19:55PM +0100, Marc Zyngier wrote:
> It appears that we don't allowed a vcpu to be restored in AArch32

s/allowed/allow/

> System mode, as we *never* included it in the list of valid modes.
> 
> Just add it to the list of allowed modes.
> 
> Fixes: 0d854a60b1d7 ("arm64: KVM: enable initialization of a 32bit vcpu")
> Signed-off-by: Marc Zyngier <maz at kernel.org>
> Cc: stable at vger.kernel.org
> ---
>  arch/arm64/kvm/guest.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
> index d9617b11f7a8..11098eb7eb44 100644
> --- a/arch/arm64/kvm/guest.c
> +++ b/arch/arm64/kvm/guest.c
> @@ -251,6 +251,7 @@ static int set_core_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
>  		case PSR_AA32_MODE_SVC:
>  		case PSR_AA32_MODE_ABT:
>  		case PSR_AA32_MODE_UND:
> +		case PSR_AA32_MODE_SYS:
>  			if (!vcpu_el1_is_32bit(vcpu))
>  				return -EINVAL;
>  			break;
> -- 
> 2.39.2
>