Re: [PATCH v6 7/9] KVM: guest_memfd: Rename prepare() hook and Kconfig to make_private() / CONVERT

[Ackerley Tng]

Sean Christopherson <seanjc@xxxxxxxxxx> writes:

> On Mon, Jul 27, 2026, Xiaoyao Li wrote:
>> On 7/24/2026 5:08 AM, Sean Christopherson wrote:
>> > Rework guest_memfd's prepare() hook into a more accurate make_private(),
>> > and rework its Kconfig from PREPARE to a more generic CONVERT.
>>
>> > This will
>> > allow x86 to share (pun intended) a kvm_x86_ops.gmem_make_shared() hook
>> > between the "convert to shared" and "reclaim" flows, which are one and the
>> > same for SNP.
>>
>> Does it mean in the future we will introduce something like below?
>>
>> #ifdef CONFIG_HAVE_KVM_ARCH_GMEM_CONVERT
>> int kvm_arch_gmem_make_private(struct kvm *kvm, gfn_t gfn, kvm_pfn_t pfn,
>> int max_order)
>> {
>> 	return kvm_x86_call(gmem_make_private)(kvm, pfn, gfn, max_order);
>> }
>>
>> +int kvm_arch_gmem_make_shared(kvm_pfn_t pfn, kvm_pfn_t nr_pages)
>> +{
>> +	return kvm_x86_call(gmem_make_private)(pfn, nr_pages);
>
> s/gmem_make_private/gmem_make_shared, but yeah, that's the plan for the in-place
> conversion series.

Yup! Did this.

Should be able to send out v9 today, just need to run some tests...