From 430442e38e7f049841c5838f8c7027bd9e170045 Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Mon, 17 Mar 2008 16:37:08 -0700 Subject: [PATCH] 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 Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- arch/x86/xen/mmu.c | 24 +++++++++++------------- 1 file 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; } -- 2.20.1