Re: [PATCH] KVM: selftests: arm64: Correct feature test for S1PIE in get-reg-list

From: Joey Gouly
Date: Thu Aug 01 2024 - 05:30:38 EST


On Wed, Jul 31, 2024 at 05:21:13PM +0100, Mark Brown wrote:
> The ID register for S1PIE is ID_AA64MMFR3_EL1.S1PIE which is bits 11:8 but
> get-reg-list uses a shift of 4, checking SCTLRX instead. Use a shift of 8
> instead.
>
> Fixes: 5f0419a0083b ("KVM: selftests: get-reg-list: add Permission Indirection registers")
> Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>

Argh!

Thanks for spotting that.

Reviewed-by: Joey Gouly <joey.gouly@xxxxxxx>

> ---
> tools/testing/selftests/kvm/aarch64/get-reg-list.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/tools/testing/selftests/kvm/aarch64/get-reg-list.c b/tools/testing/selftests/kvm/aarch64/get-reg-list.c
> index 709d7d721760..4abebde78187 100644
> --- a/tools/testing/selftests/kvm/aarch64/get-reg-list.c
> +++ b/tools/testing/selftests/kvm/aarch64/get-reg-list.c
> @@ -32,13 +32,13 @@ static struct feature_id_reg feat_id_regs[] = {
> {
> ARM64_SYS_REG(3, 0, 10, 2, 2), /* PIRE0_EL1 */
> ARM64_SYS_REG(3, 0, 0, 7, 3), /* ID_AA64MMFR3_EL1 */
> - 4,
> + 8,
> 1
> },
> {
> ARM64_SYS_REG(3, 0, 10, 2, 3), /* PIR_EL1 */
> ARM64_SYS_REG(3, 0, 0, 7, 3), /* ID_AA64MMFR3_EL1 */
> - 4,
> + 8,
> 1
> }
> };
>
> ---
> base-commit: 8400291e289ee6b2bf9779ff1c83a291501f017b
> change-id: 20240731-kvm-arm64-fix-s1pie-test-a40b6be58d7b
>
> Best regards,
> --
> Mark Brown <broonie@xxxxxxxxxx>
>