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Diffstat (limited to 'arch/arm/include/asm/xen/page.h')
-rw-r--r--arch/arm/include/asm/xen/page.h13
1 files changed, 10 insertions, 3 deletions
diff --git a/arch/arm/include/asm/xen/page.h b/arch/arm/include/asm/xen/page.h
index 174202318dff..c6b9096cef95 100644
--- a/arch/arm/include/asm/xen/page.h
+++ b/arch/arm/include/asm/xen/page.h
@@ -10,7 +10,7 @@
#include <xen/interface/grant_table.h>
#define pfn_to_mfn(pfn) (pfn)
-#define phys_to_machine_mapping_valid (1)
+#define phys_to_machine_mapping_valid(pfn) (1)
#define mfn_to_pfn(mfn) (mfn)
#define mfn_to_virt(m) (__va(mfn_to_pfn(m) << PAGE_SHIFT))
@@ -30,6 +30,8 @@ typedef struct xpaddr {
#define XMADDR(x) ((xmaddr_t) { .maddr = (x) })
#define XPADDR(x) ((xpaddr_t) { .paddr = (x) })
+#define INVALID_P2M_ENTRY (~0UL)
+
static inline xmaddr_t phys_to_machine(xpaddr_t phys)
{
unsigned offset = phys.paddr & ~PAGE_MASK;
@@ -74,9 +76,14 @@ static inline int m2p_remove_override(struct page *page, bool clear_pte)
return 0;
}
+static inline bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn)
+{
+ BUG_ON(pfn != mfn && mfn != INVALID_P2M_ENTRY);
+ return true;
+}
+
static inline bool set_phys_to_machine(unsigned long pfn, unsigned long mfn)
{
- BUG();
- return false;
+ return __set_phys_to_machine(pfn, mfn);
}
#endif /* _ASM_ARM_XEN_PAGE_H */