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| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-03-17 16:37:08 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-24 23:57:31 +0200 |
| commit | 430442e38e7f049841c5838f8c7027bd9e170045 (patch) | |
| tree | 22d3fde2adafd9c3140af8559fc410a02a1775b8 /arch/x86/xen | |
| parent | abf33038ffa65097939d86d2a90f93adc6115aa0 (diff) | |
| download | linux-430442e38e7f049841c5838f8c7027bd9e170045.tar.gz linux-430442e38e7f049841c5838f8c7027bd9e170045.tar.bz2 linux-430442e38e7f049841c5838f8c7027bd9e170045.zip | |
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>
Diffstat (limited to 'arch/x86/xen')
| -rw-r--r-- | arch/x86/xen/mmu.c | 24 |
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; } |