Re: [PATCH v7 04/12] KVM: Allow range-based TLB invalidation from common code

[Sean Christopherson]

On Sat, Jul 22, 2023, Raghavendra Rao Ananta wrote:
> diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
> index ec169f5c7dce..eb88d25f9896 100644
> --- a/arch/x86/kvm/mmu/mmu.c
> +++ b/arch/x86/kvm/mmu/mmu.c
> @@ -278,16 +278,15 @@ static inline bool kvm_available_flush_remote_tlbs_range(void)
>  	return kvm_x86_ops.flush_remote_tlbs_range;
>  }
>  
> -void kvm_flush_remote_tlbs_range(struct kvm *kvm, gfn_t start_gfn,
> -				 gfn_t nr_pages)
> +int kvm_arch_flush_remote_tlbs_range(struct kvm *kvm, gfn_t start_gfn, u64 pages)

Please keep "nr_pages", I have a very strong preference for that over just "pages"
as the "nr_" makes it super obvious that it's a single number, as opposed to an
array of pages or something.

And it doesn't truly matter, but IMO the gfn_t type is more appropriate since
the gfn and the number of pages need to have the same type.