Re: [PATCH v10 11/30] KVM: arm64: Store vector lengths in an array

[Jean-Philippe Brucker]

On Fri, Mar 06, 2026 at 05:01:03PM +0000, Mark Brown wrote:
> SME adds a second vector length configured in a very similar way to the
> SVE vector length, in order to facilitate future code sharing for SME
> refactor our storage of vector lengths to use an array like the host does.
> We do not yet take much advantage of this so the intermediate code is not
> as clean as might be.
> 
> No functional change.
> 
> Reviewed-by: Fuad Tabba <tabba@xxxxxxxxxx>
> Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
> ---
>  arch/arm64/include/asm/kvm_host.h       | 17 +++++++++++------
>  arch/arm64/include/asm/kvm_hyp.h        |  2 +-
>  arch/arm64/include/asm/kvm_pkvm.h       |  2 +-
>  arch/arm64/kvm/fpsimd.c                 |  2 +-
>  arch/arm64/kvm/guest.c                  |  6 +++---
>  arch/arm64/kvm/hyp/include/hyp/switch.h |  6 +++---
>  arch/arm64/kvm/hyp/nvhe/hyp-main.c      |  6 +++---
>  arch/arm64/kvm/hyp/nvhe/pkvm.c          |  7 ++++---
>  arch/arm64/kvm/reset.c                  | 22 +++++++++++-----------
>  9 files changed, 38 insertions(+), 32 deletions(-)
> 
> diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
> index 906dbefc5b33..3c30c1a70429 100644
> --- a/arch/arm64/include/asm/kvm_host.h
> +++ b/arch/arm64/include/asm/kvm_host.h
> @@ -77,8 +77,10 @@ enum kvm_mode kvm_get_mode(void);
>  static inline enum kvm_mode kvm_get_mode(void) { return KVM_MODE_NONE; };
>  #endif
>  
> -extern unsigned int __ro_after_init kvm_sve_max_vl;
> -extern unsigned int __ro_after_init kvm_host_sve_max_vl;
> +extern unsigned int __ro_after_init kvm_max_vl[ARM64_VEC_MAX];
> +extern unsigned int __ro_after_init kvm_host_max_vl[ARM64_VEC_MAX];
> +DECLARE_STATIC_KEY_FALSE(userspace_irqchip_in_use);

A rebase issue here, rest looks good

Thanks,
Jean