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authorJeremy Fitzhardinge <jeremy@goop.org>2008-03-18 02:37:08 +0300
committerIngo Molnar <mingo@elte.hu>2008-04-25 01:57:31 +0400
commit430442e38e7f049841c5838f8c7027bd9e170045 (patch)
tree22d3fde2adafd9c3140af8559fc410a02a1775b8
parentabf33038ffa65097939d86d2a90f93adc6115aa0 (diff)
downloadlinux-430442e38e7f049841c5838f8c7027bd9e170045.tar.xz
xen: make use of pte_t union
pte_t always contains a "pte" field for the whole pte value, so make use of it. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
-rw-r--r--arch/x86/xen/mmu.c24
1 files changed, 11 insertions, 13 deletions
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 363f7a3b67fb..3148db8e794e 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -216,12 +216,10 @@ void xen_pmd_clear(pmd_t *pmdp)
pteval_t xen_pte_val(pte_t pte)
{
- pteval_t ret = 0;
+ pteval_t ret = pte.pte;
- if (pte.pte_low) {
- ret = ((pteval_t)pte.pte_high << 32) | pte.pte_low;
- ret = machine_to_phys(XMADDR(ret)).paddr | 1;
- }
+ if (ret & _PAGE_PRESENT)
+ ret = machine_to_phys(XMADDR(ret)).paddr | _PAGE_PRESENT;
return ret;
}
@@ -229,16 +227,16 @@ pteval_t xen_pte_val(pte_t pte)
pmdval_t xen_pmd_val(pmd_t pmd)
{
pmdval_t ret = pmd.pmd;
- if (ret)
- ret = machine_to_phys(XMADDR(ret)).paddr | 1;
+ if (ret & _PAGE_PRESENT)
+ ret = machine_to_phys(XMADDR(ret)).paddr | _PAGE_PRESENT;
return ret;
}
pgdval_t xen_pgd_val(pgd_t pgd)
{
pgdval_t ret = pgd.pgd;
- if (ret)
- ret = machine_to_phys(XMADDR(ret)).paddr | 1;
+ if (ret & _PAGE_PRESENT)
+ ret = machine_to_phys(XMADDR(ret)).paddr | _PAGE_PRESENT;
return ret;
}
@@ -254,7 +252,7 @@ pte_t xen_make_pte(pteval_t pte)
pmd_t xen_make_pmd(pmdval_t pmd)
{
- if (pmd & 1)
+ if (pmd & _PAGE_PRESENT)
pmd = phys_to_machine(XPADDR(pmd)).maddr;
return (pmd_t){ pmd };
@@ -275,7 +273,7 @@ void xen_set_pte(pte_t *ptep, pte_t pte)
pteval_t xen_pte_val(pte_t pte)
{
- pteval_t ret = pte.pte_low;
+ pteval_t ret = pte.pte;
if (ret & _PAGE_PRESENT)
ret = machine_to_phys(XMADDR(ret)).paddr;
@@ -286,8 +284,8 @@ pteval_t xen_pte_val(pte_t pte)
pgdval_t xen_pgd_val(pgd_t pgd)
{
pteval_t ret = pgd.pgd;
- if (ret)
- ret = machine_to_phys(XMADDR(ret)).paddr | 1;
+ if (ret & _PAGE_PRESENT)
+ ret = machine_to_phys(XMADDR(ret)).paddr | _PAGE_PRESENT;
return ret;
}