[RFC 18/19] KVM: x86/mmu: Make kvm_is_mmio_pfn usable outside of spte.c

From: Ben Gardon <bgardon@google.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: Paolo Bonzini <pbonzini@redhat.com>, Peter Xu <peterx@redhat.com>,
	Sean Christopherson <seanjc@google.com>,
	Peter Shier <pshier@google.com>,
	David Matlack <dmatlack@google.com>,
	Mingwei Zhang <mizhang@google.com>,
	Yulei Zhang <yulei.kernel@gmail.com>,
	Wanpeng Li <kernellwp@gmail.com>,
	Xiao Guangrong <xiaoguangrong.eric@gmail.com>,
	Kai Huang <kai.huang@intel.com>,
	Keqian Zhu <zhukeqian1@huawei.com>,
	David Hildenbrand <david@redhat.com>,
	Ben Gardon <bgardon@google.com>
Subject: [RFC 18/19] KVM: x86/mmu: Make kvm_is_mmio_pfn usable outside of spte.c
Date: Wed, 10 Nov 2021 14:30:09 -0800	[thread overview]
Message-ID: <20211110223010.1392399-19-bgardon@google.com> (raw)
In-Reply-To: <20211110223010.1392399-1-bgardon@google.com>

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 7be41d2dbb02..13b6143f6333 100644
--- a/arch/x86/kvm/mmu/spte.c
+++ b/arch/x86/kvm/mmu/spte.c
@@ -68,7 +68,7 @@ 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 d7598506fbad..909c24c733c4 100644
--- a/arch/x86/kvm/mmu/spte.h
+++ b/arch/x86/kvm/mmu/spte.h
@@ -347,4 +347,5 @@ 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
-- 
2.34.0.rc0.344.g81b53c2807-goog

