KVM: introduce KVM_ERR_PTR_BAD_PAGE

It is used to eliminate the overload of function call and cleanup
the code

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 eb73e5f13678..93d3c6e063c8 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -922,17 +922,6 @@ void kvm_disable_largepages(void)
 }
 EXPORT_SYMBOL_GPL(kvm_disable_largepages);
 
-int is_error_page(struct page *page)
-{
-        return IS_ERR(page);
-}
-EXPORT_SYMBOL_GPL(is_error_page);
-
-struct page *get_bad_page(void)
-{
-        return ERR_PTR(-ENOENT);
-}
-
 static inline unsigned long bad_hva(void)
 {
         return PAGE_OFFSET;
@@ -1179,7 +1168,7 @@ static struct page *kvm_pfn_to_page(pfn_t pfn)
         WARN_ON(kvm_is_mmio_pfn(pfn));
 
         if (is_error_pfn(pfn) || kvm_is_mmio_pfn(pfn))
-                return get_bad_page();
+                return KVM_ERR_PTR_BAD_PAGE;
 
         return pfn_to_page(pfn);
 }