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KVM: Make kvm_follow_pfn.refcounted_page a required field 

Now that the legacy gfn_to_pfn() APIs are gone, and all callers of
hva_to_pfn() pass in a refcounted_page pointer, make it a required field
to ensure all future usage in KVM plays nice.

Tested-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Tested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20241010182427.1434605-82-seanjc@google.com>
pull/1085/head
Sean Christopherson 2024-10-10 11:24:23 -07:00 committed by Paolo Bonzini
parent d0ef8d9fbe
commit 31fccdd212
1 changed files with 4 additions and 2 deletions
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6
virt/kvm/kvm_main.c
View File

@ -2834,8 +2834,7 @@ static kvm_pfn_t kvm_resolve_pfn(struct kvm_follow_pfn *kfp, struct page *page,
pfn = page_to_pfn(page);
}
if (kfp->refcounted_page)
*kfp->refcounted_page = page;
*kfp->refcounted_page = page;
return pfn;
}
@ -2986,6 +2985,9 @@ kvm_pfn_t hva_to_pfn(struct kvm_follow_pfn *kfp)
might_sleep();
if (WARN_ON_ONCE(!kfp->refcounted_page))
return KVM_PFN_ERR_FAULT;
if (hva_to_pfn_fast(kfp, &pfn))
return pfn;