[PATCH v3 25/27] KVM: arm64: nv: Expose FGT to nested guests

[Eric Auger]

On 8/8/23 13:47, Marc Zyngier wrote:
> Now that we have FGT support, expose the feature to NV guests.
>
> Signed-off-by: Marc Zyngier <maz at kernel.org>
> ---
>  arch/arm64/kvm/nested.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/kvm/nested.c b/arch/arm64/kvm/nested.c
> index 7f80f385d9e8..3facd8918ae3 100644
> --- a/arch/arm64/kvm/nested.c
> +++ b/arch/arm64/kvm/nested.c
> @@ -71,8 +71,9 @@ void access_nested_id_reg(struct kvm_vcpu *v, struct sys_reg_params *p,
>  		break;
>  
>  	case SYS_ID_AA64MMFR0_EL1:
> -		/* Hide ECV, FGT, ExS, Secure Memory */
> -		val &= ~(GENMASK_ULL(63, 43)		|
> +		/* Hide ECV, ExS, Secure Memory */
> +		val &= ~(NV_FTR(MMFR0, ECV)		|
> +			 NV_FTR(MMFR0, EXS)		|
>  			 NV_FTR(MMFR0, TGRAN4_2)	|
>  			 NV_FTR(MMFR0, TGRAN16_2)	|
>  			 NV_FTR(MMFR0, TGRAN64_2)	|
Reviewed-by: Eric Auger <eric.auger at redhat.com>

Eric