[PATCH v2 8/9] KVM: x86/mmu: Make kvm_is_mmio_pfn usable outside of spte.c

Ben Gardon
2022-03-21T22:47:48Z

Export kvm_is_mmio_pfn from spte.c. It will be used in a subsequent
commit for in-place lpage promotion when disabling dirty logging.

Signed-off-by: Ben Gardon <bgardon@google.com>
---
arch/x86/kvm/mmu/spte.c | 2 +-
arch/x86/kvm/mmu/spte.h | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kvm/mmu/spte.c b/arch/x86/kvm/mmu/spte.c
index 45e9c0c3932e..8e9b827c4ed5 100644
--- a/arch/x86/kvm/mmu/spte.c
+++ b/arch/x86/kvm/mmu/spte.c
@@ -69,7 +69,7 @@ u64 make_mmio_spte(struct kvm_vcpu *vcpu, u64 gfn, unsigned int access)
return spte;
}

-static bool kvm_is_mmio_pfn(kvm_pfn_t pfn)
+bool kvm_is_mmio_pfn(kvm_pfn_t pfn)
{
if (pfn_valid(pfn))
return !is_zero_pfn(pfn) && PageReserved(pfn_to_page(pfn)) &&
diff --git a/arch/x86/kvm/mmu/spte.h b/arch/x86/kvm/mmu/spte.h
index cee02fe63429..e058a85e6c66 100644
--- a/arch/x86/kvm/mmu/spte.h
+++ b/arch/x86/kvm/mmu/spte.h
@@ -443,4 +443,5 @@ u64 kvm_mmu_changed_pte_notifier_make_spte(u64 old_spte, kvm_pfn_t new_pfn);

void kvm_mmu_reset_all_pte_masks(void);

+bool kvm_is_mmio_pfn(kvm_pfn_t pfn);
#endif
--
2.35.1.894.gb6a874cedc-goog