Then, get_hwpoison_pfn and is_hwpoison_pfn can be removed

Signed-off-by: Xiao Guangrong <redacted>
---
 arch/x86/kvm/mmu.c       |    2 +-
 include/linux/kvm_host.h |    4 ++--
 virt/kvm/kvm_main.c      |   13 +------------
 3 files changed, 4 insertions(+), 15 deletions(-)

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 19bac91..320a781 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c

@@ -2651,7 +2651,7 @@ static void kvm_send_hwpoison_signal(unsigned long address, struct task_struct *
 static int kvm_handle_bad_page(struct kvm_vcpu *vcpu, gfn_t gfn, pfn_t pfn)
 {
 	kvm_release_pfn_clean(pfn);
-	if (is_hwpoison_pfn(pfn)) {
+	if (pfn == kvm_hwpoison_pfn) {
 		kvm_send_hwpoison_signal(gfn_to_hva(vcpu->kvm, gfn), current);
 		return 0;
 	}

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 7cd6871..4de56cd 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h

@@ -48,7 +48,8 @@
 #define KVM_MAX_MMIO_FRAGMENTS \
 	(KVM_MMIO_SIZE / KVM_USER_MMIO_SIZE + KVM_EXTRA_MMIO_FRAGMENTS)

-#define kvm_fault_pfn	(-EFAULT)
+#define kvm_fault_pfn		(-EFAULT)
+#define kvm_hwpoison_pfn	(-EHWPOISON)