KVM: introduce KVM_PFN_ERR_HWPOISON

Then, get_hwpoison_pfn and is_hwpoison_pfn can be removed

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 1 insertions, 12 deletions

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index ef0491645a1..7fce2d5787a 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -939,17 +939,6 @@ static pfn_t get_bad_pfn(void)
         return -ENOENT;
 }
 
-static pfn_t get_hwpoison_pfn(void)
-{
-        return -EHWPOISON;
-}
-
-int is_hwpoison_pfn(pfn_t pfn)
-{
-        return pfn == -EHWPOISON;
-}
-EXPORT_SYMBOL_GPL(is_hwpoison_pfn);
-
 int is_noslot_pfn(pfn_t pfn)
 {
         return pfn == -ENOENT;
@@ -1115,7 +1104,7 @@ static pfn_t hva_to_pfn(unsigned long addr, bool atomic, bool *async,
                 if (npages == -EHWPOISON ||
                         (!async && check_user_page_hwpoison(addr))) {
                         up_read(&current->mm->mmap_sem);
-                        return get_hwpoison_pfn();
+                        return KVM_PFN_ERR_HWPOISON;
                 }
 
                 vma = find_vma_intersection(current->mm, addr, addr+1);