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xen: remove support for non-PAE 32-bit

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Non-PAE operation has been deprecated in Xen for a while, and is
rarely tested or used.  xen-unstable has now officially dropped
non-PAE support.  Since Xen/pvops' non-PAE support has also been
broken for a while, we may as well completely drop it altogether.

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
2008-05-09 12:05:57 +01:00
committed by Thomas Gleixner
parent 78b58e549a
commit 3843fc2575
6 changed files with 27 additions and 77 deletions
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19
arch/x86/xen/mmu.c
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@@ -222,7 +222,7 @@ pmdval_t xen_pmd_val(pmd_t pmd)
ret = machine_to_phys(XMADDR(ret)).paddr | _PAGE_PRESENT;
return ret;
}
#ifdef CONFIG_X86_PAE
void xen_set_pud(pud_t *ptr, pud_t val)
{
struct multicall_space mcs;
@@ -272,12 +272,6 @@ pmd_t xen_make_pmd(pmdval_t pmd)
return native_make_pmd(pmd);
}
#else /* !PAE */
void xen_set_pte(pte_t *ptep, pte_t pte)
{
*ptep = pte;
}
#endif /* CONFIG_X86_PAE */
/*
(Yet another) pagetable walker. This one is intended for pinning a
@@ -430,8 +424,6 @@ static int pin_page(struct page *page, enum pt_level level)
read-only, and can be pinned. */
void xen_pgd_pin(pgd_t *pgd)
{
unsigned level;
xen_mc_batch();
if (pgd_walk(pgd, pin_page, TASK_SIZE)) {
@@ -441,14 +433,7 @@ void xen_pgd_pin(pgd_t *pgd)
xen_mc_batch();
}
#ifdef CONFIG_X86_PAE
level = MMUEXT_PIN_L3_TABLE;
#else
level = MMUEXT_PIN_L2_TABLE;
#endif
xen_do_pin(level, PFN_DOWN(__pa(pgd)));
xen_do_pin(MMUEXT_PIN_L3_TABLE, PFN_DOWN(__pa(pgd)));
xen_mc_issue(0);
}