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xen: unify pte operations

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We can fold the essentially common pte functions together now.

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>
This commit is contained in:
Jeremy Fitzhardinge 2008-03-17 16:37:09 -07:00 committed by Ingo Molnar
parent 430442e38e
commit 947a69c90c
1 changed files with 44 additions and 81 deletions
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125
arch/x86/xen/mmu.c
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@ -171,6 +171,49 @@ void xen_set_pte_at(struct mm_struct *mm, unsigned long addr,
xen_set_pte(ptep, pteval); xen_set_pte(ptep, pteval);
} }
pteval_t xen_pte_val(pte_t pte)
{
pteval_t ret = pte.pte;
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 & _PAGE_PRESENT)
ret = machine_to_phys(XMADDR(ret)).paddr | _PAGE_PRESENT;
return ret;
}
pte_t xen_make_pte(pteval_t pte)
{
if (pte & _PAGE_PRESENT) {
pte = phys_to_machine(XPADDR(pte)).maddr;
pte &= ~(_PAGE_PCD | _PAGE_PWT);
}
return (pte_t){ .pte = pte };
}
pgd_t xen_make_pgd(pgdval_t pgd)
{
if (pgd & _PAGE_PRESENT)
pgd = phys_to_machine(XPADDR(pgd)).maddr;
return (pgd_t){ pgd };
}
pmdval_t xen_pmd_val(pmd_t pmd)
{
pmdval_t ret = native_pmd_val(pmd);
if (ret & _PAGE_PRESENT)
ret = machine_to_phys(XMADDR(ret)).paddr | _PAGE_PRESENT;
return ret;
}
#ifdef CONFIG_X86_PAE #ifdef CONFIG_X86_PAE
void xen_set_pud(pud_t *ptr, pud_t val) void xen_set_pud(pud_t *ptr, pud_t val)
{ {
@ -214,98 +257,18 @@ void xen_pmd_clear(pmd_t *pmdp)
xen_set_pmd(pmdp, __pmd(0)); xen_set_pmd(pmdp, __pmd(0));
} }
pteval_t xen_pte_val(pte_t pte)
{
pteval_t ret = pte.pte;
if (ret & _PAGE_PRESENT)
ret = machine_to_phys(XMADDR(ret)).paddr | _PAGE_PRESENT;
return ret;
}
pmdval_t xen_pmd_val(pmd_t pmd)
{
pmdval_t ret = pmd.pmd;
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 & _PAGE_PRESENT)
ret = machine_to_phys(XMADDR(ret)).paddr | _PAGE_PRESENT;
return ret;
}
pte_t xen_make_pte(pteval_t pte)
{
if (pte & _PAGE_PRESENT) {
pte = phys_to_machine(XPADDR(pte)).maddr;
pte &= ~(_PAGE_PCD | _PAGE_PWT);
}
return (pte_t){ .pte = pte };
}
pmd_t xen_make_pmd(pmdval_t pmd) pmd_t xen_make_pmd(pmdval_t pmd)
{ {
if (pmd & _PAGE_PRESENT) if (pmd & _PAGE_PRESENT)
pmd = phys_to_machine(XPADDR(pmd)).maddr; pmd = phys_to_machine(XPADDR(pmd)).maddr;
return (pmd_t){ pmd }; return native_make_pmd(pmd);
}
pgd_t xen_make_pgd(pgdval_t pgd)
{
if (pgd & _PAGE_PRESENT)
pgd = phys_to_machine(XPADDR(pgd)).maddr;
return (pgd_t){ pgd };
} }
#else /* !PAE */ #else /* !PAE */
void xen_set_pte(pte_t *ptep, pte_t pte) void xen_set_pte(pte_t *ptep, pte_t pte)
{ {
*ptep = pte; *ptep = pte;
} }
pteval_t xen_pte_val(pte_t pte)
{
pteval_t ret = pte.pte;
if (ret & _PAGE_PRESENT)
ret = machine_to_phys(XMADDR(ret)).paddr;
return ret;
}
pgdval_t xen_pgd_val(pgd_t pgd)
{
pteval_t ret = pgd.pgd;
if (ret & _PAGE_PRESENT)
ret = machine_to_phys(XMADDR(ret)).paddr | _PAGE_PRESENT;
return ret;
}
pte_t xen_make_pte(pteval_t pte)
{
if (pte & _PAGE_PRESENT) {
pte = phys_to_machine(XPADDR(pte)).maddr;
pte &= ~(_PAGE_PCD | _PAGE_PWT);
}
return (pte_t){ pte };
}
pgd_t xen_make_pgd(pgdval_t pgd)
{
if (pgd & _PAGE_PRESENT)
pgd = phys_to_machine(XPADDR(pgd)).maddr;
return (pgd_t){ pgd };
}
#endif /* CONFIG_X86_PAE */ #endif /* CONFIG_X86_PAE */
/* /*