Xen's pte operations on mfns can be unified like the kernel's pfn operations.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
---
include/xen/page.h | 30 +++++++++++++++---------------
1 file changed, 15 insertions(+), 15 deletions(-)
diff --git a/include/xen/page.h b/include/xen/page.h
--- a/include/xen/page.h
+++ b/include/xen/page.h
@@ -125,37 +125,37 @@
#define virt_to_mfn(v) (pfn_to_mfn(PFN_DOWN(__pa(v))))
#define mfn_to_virt(m) (__va(mfn_to_pfn(m) << PAGE_SHIFT))
-#ifdef CONFIG_X86_PAE
-#define pte_mfn(_pte) (((_pte).pte_low >> PAGE_SHIFT) | \
- (((_pte).pte_high & 0xfff) << (32-PAGE_SHIFT)))
+static inline unsigned long pte_mfn(pte_t pte)
+{
+ return (pte.pte & ~_PAGE_NX) >> PAGE_SHIFT;
+}
static inline pte_t mfn_pte(unsigned long page_nr, pgprot_t pgprot)
{
pte_t pte;
- pte.pte_high = (page_nr >> (32 - PAGE_SHIFT)) |
- (pgprot_val(pgprot) >> 32);
- pte.pte_high &= (__supported_pte_mask >> 32);
- pte.pte_low = ((page_nr << PAGE_SHIFT) | pgprot_val(pgprot));
- pte.pte_low &= __supported_pte_mask;
+ pte.pte = ((phys_addr_t)page_nr << PAGE_SHIFT) |
+ (pgprot_val(pgprot) & __supported_pte_mask);
return pte;
}
-static inline unsigned long long pte_val_ma(pte_t x)
+static inline pteval_t pte_val_ma(pte_t pte)
{
- return x.pte;
+ return pte.pte;
}
+
+static inline pte_t __pte_ma(pteval_t x)
+{
+ return (pte_t) { .pte = x };
+}
+
+#ifdef CONFIG_X86_PAE
#define pmd_val_ma(v) ((v).pmd)
#define pud_val_ma(v) ((v).pgd.pgd)
-#define __pte_ma(x) ((pte_t) { .pte = (x) })
#define __pmd_ma(x) ((pmd_t) { (x) } )
#else /* !X86_PAE */
-#define pte_mfn(_pte) ((_pte).pte_low >> PAGE_SHIFT)
-#define mfn_pte(pfn, prot) __pte_ma(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
-#define pte_val_ma(x) ((x).pte)
#define pmd_val_ma(v) ((v).pud.pgd.pgd)
-#define __pte_ma(x) ((pte_t) { (x) } )
#endif /* CONFIG_X86_PAE */
#define pgd_val_ma(x) ((x).pgd)
--
