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040537ce87
Explicitly require "struct page" memory when sharing memory between guest and host via an Ultravisor. Given the number of pfn_to_page() calls in the code, it's safe to assume that KVM already requires that the pfn returned by gfn_to_pfn() is backed by struct page, i.e. this is likely a bug fix, not a reduction in KVM capabilities. Switching to gfn_to_page() will eventually allow removing gfn_to_pfn() and kvm_pfn_to_refcounted_page(). 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: <20241010182427.1434605-79-seanjc@google.com>