Re: [PATCH v6 1/9] KVM: guest_memfd: Pass the number of pages instead of the end pfn into .invalidate()

[Xiaoyao Li]

On 7/24/2026 5:08 AM, Sean Christopherson wrote:
> Pass the number of pages to "invalidate", i.e. reclaim, instead of the end
> pfn, as a first step towards aligning the function prototypes between the
> de facto "to private" and "to shared" arch hooks.  Eventually, the goal
> is to end up with kvm_gmem_arch_make_{private,shared}(), and in both cases,
> providing the number of pages makes the call sites slightly nicer, and also
> avoids any confusion over whether the end pfn is inclusive or exclusive.
>
> Opportunistically rename "start" to "pfn", again to align with the expected
> signature of make_private() (which needs to pass a starting gfn as well, at
> which point the "start" becomes noise).
>
> No functional change intended.
>
> Cc: Fuad Tabba <fuad.tabba@xxxxxxxxx>
> Cc: Ackerley Tng <ackerleytng@xxxxxxxxxx>
> Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>

Reviewed-by: Xiaoyao Li <xiaoyao.li@xxxxxxxxx>