KVM: inline is_*_pfn functions

These functions are exported and can not inline, move them
to kvm_host.h to eliminate the overload of function call

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

1 files changed, 16 insertions, 3 deletions

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index b2cf3109822e..19d91ceaf5e6 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -21,6 +21,7 @@
 #include <linux/slab.h>
 #include <linux/rcupdate.h>
 #include <linux/ratelimit.h>
+#include <linux/err.h>
 #include <asm/signal.h>
 
 #include <linux/kvm.h>
@@ -52,6 +53,21 @@
 #define KVM_PFN_ERR_HWPOISON    (-EHWPOISON)
 #define KVM_PFN_ERR_BAD         (-ENOENT)
 
+static inline int is_error_pfn(pfn_t pfn)
+{
+        return IS_ERR_VALUE(pfn);
+}
+
+static inline int is_noslot_pfn(pfn_t pfn)
+{
+        return pfn == -ENOENT;
+}
+
+static inline int is_invalid_pfn(pfn_t pfn)
+{
+        return !is_noslot_pfn(pfn) && is_error_pfn(pfn);
+}
+
 /*
  * vcpu->requests bit members
  */
@@ -396,9 +412,6 @@ id_to_memslot(struct kvm_memslots *slots, int id)
 extern struct page *bad_page;
 
 int is_error_page(struct page *page);
-int is_error_pfn(pfn_t pfn);
-int is_noslot_pfn(pfn_t pfn);
-int is_invalid_pfn(pfn_t pfn);
 int kvm_is_error_hva(unsigned long addr);
 int kvm_set_memory_region(struct kvm *kvm,
                           struct kvm_userspace_memory_region *mem,