Hi Yanan,

On Thursday 15 Apr 2021 at 19:50:27 (+0800), Yanan Wang wrote:
> diff --git a/arch/arm64/include/asm/kvm_pgtable.h 
> b/arch/arm64/include/asm/kvm_pgtable.h
> index c3674c47d48c..a43cbe697b37 100644
> --- a/arch/arm64/include/asm/kvm_pgtable.h
> +++ b/arch/arm64/include/asm/kvm_pgtable.h
> @@ -61,10 +61,12 @@ struct kvm_pgtable_mm_ops {
>   * @KVM_PGTABLE_S2_NOFWB:    Don't enforce Normal-WB even if the CPUs have
>   *                           ARM64_HAS_STAGE2_FWB.
>   * @KVM_PGTABLE_S2_IDMAP:    Only use identity mappings.
> + * @KVM_PGTABLE_S2_GUEST:    Whether the page-tables are guest stage-2.
>   */
>  enum kvm_pgtable_stage2_flags {
>       KVM_PGTABLE_S2_NOFWB                    = BIT(0),
>       KVM_PGTABLE_S2_IDMAP                    = BIT(1),
> +     KVM_PGTABLE_S2_GUEST                    = BIT(2),

Assuming that we need this flag (maybe not given Marc's suggestion on
another patch), I'd recommend re-naming it to explain _what_ it does,
rather than _who_ is using it.

That's the principle we followed for e.g. KVM_PGTABLE_S2_IDMAP, so we
should be consistent here as well.

Thanks,
Quentin
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