x86/paravirt/xen: add set_fixmap pv_mmu_ops

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2 files changed, 25 insertions, 2 deletions

diff --git a/include/asm-x86/fixmap.h b/include/asm-x86/fixmap.h
index 934d6b49b530..44d4f8217349 100644
--- a/include/asm-x86/fixmap.h
+++ b/include/asm-x86/fixmap.h
@@ -9,8 +9,18 @@
 
 extern int fixmaps_set;
 
-extern void __set_fixmap(enum fixed_addresses idx,
-                         unsigned long phys, pgprot_t flags);
+void __native_set_fixmap(enum fixed_addresses idx, pte_t pte);
+void native_set_fixmap(enum fixed_addresses idx,
+                       unsigned long phys, pgprot_t flags);
+
+#ifndef CONFIG_PARAVIRT
+static inline void __set_fixmap(enum fixed_addresses idx,
+                                unsigned long phys, pgprot_t flags)
+{
+        native_set_fixmap(idx, phys, flags);
+}
+#endif
+
 #define set_fixmap(idx, phys)                           \
         __set_fixmap(idx, phys, PAGE_KERNEL)
 
diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h
index 0f13b945e240..af85caf9a799 100644
--- a/include/asm-x86/paravirt.h
+++ b/include/asm-x86/paravirt.h
@@ -273,6 +273,13 @@ struct pv_mmu_ops {
 #endif
 
         struct pv_lazy_ops lazy_mode;
+
+        /* dom0 ops */
+
+        /* Sometimes the physical address is a pfn, and sometimes its
+           an mfn.  We can tell which is which from the index. */
+        void (*set_fixmap)(unsigned /* enum fixed_addresses */ idx,
+                           unsigned long phys, pgprot_t flags);
 };
 
 /* This contains all the paravirt structures: we get a convenient
@@ -1252,6 +1259,12 @@ static inline void arch_flush_lazy_mmu_mode(void)
         }
 }
 
+static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx,
+                                unsigned long phys, pgprot_t flags)
+{
+        pv_mmu_ops.set_fixmap(idx, phys, flags);
+}
+
 void _paravirt_nop(void);
 #define paravirt_nop    ((void *)_paravirt_nop)