On Mon, 22 Jan 2024 16:28:14 +0000,
Mark Brown <broonie@xxxxxxxxxx> wrote:
>
> The 2023 architecture extensions have allocated some new ID registers, add
> them to the KVM system register descriptions so that they are visible to
> guests.
>
> Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
> ---
> arch/arm64/kvm/sys_regs.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
> index 30253bd19917..38503b1cd2eb 100644
> --- a/arch/arm64/kvm/sys_regs.c
> +++ b/arch/arm64/kvm/sys_regs.c
> @@ -2292,12 +2292,12 @@ static const struct sys_reg_desc sys_reg_descs[] = {
> ID_AA64PFR0_EL1_AdvSIMD |
> ID_AA64PFR0_EL1_FP), },
> ID_SANITISED(ID_AA64PFR1_EL1),
> - ID_UNALLOCATED(4,2),
> + ID_SANITISED(ID_AA64PFR2_EL1),
So you now expose all sort of MTE things to the guest?
> ID_UNALLOCATED(4,3),
> ID_WRITABLE(ID_AA64ZFR0_EL1, ~ID_AA64ZFR0_EL1_RES0),
> ID_HIDDEN(ID_AA64SMFR0_EL1),
> ID_UNALLOCATED(4,6),
> - ID_UNALLOCATED(4,7),
> + ID_SANITISED(ID_AA64FPFR0_EL1),
>
> /* CRm=5 */
> { SYS_DESC(SYS_ID_AA64DFR0_EL1),
> @@ -2324,7 +2324,7 @@ static const struct sys_reg_desc sys_reg_descs[] = {
> ID_WRITABLE(ID_AA64ISAR2_EL1, ~(ID_AA64ISAR2_EL1_RES0 |
> ID_AA64ISAR2_EL1_APA3 |
> ID_AA64ISAR2_EL1_GPA3)),
> - ID_UNALLOCATED(6,3),
> + ID_WRITABLE(ID_AA64ISAR3_EL1, ~ID_AA64ISAR3_EL1_RES0),
How about the non dpISA stuff that is advertised in the same register,
and for which no support exists?
> ID_UNALLOCATED(6,4),
> ID_UNALLOCATED(6,5),
> ID_UNALLOCATED(6,6),
>
M.
--
Without deviation from the norm, progress is not possible.
