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authorIan Campbell <ian.campbell@citrix.com>2010-02-26 17:16:02 +0000
committerH. Peter Anvin <hpa@zytor.com>2010-02-27 14:41:35 -0800
commitdad52fc01161afcb8798c609e009aed4d104927f (patch)
tree6d31060cc3e484898c3f503204cdfc52cb5d4e03 /arch/x86/xen
parent3249b7e1df6380e9d7bb3238f64f445bf614f787 (diff)
downloadlinux-linaro-android-dad52fc01161afcb8798c609e009aed4d104927f.tar.gz
x86, paravirt: Remove kmap_atomic_pte paravirt op.
Now that both Xen and VMI disable allocations of PTE pages from high memory this paravirt op serves no further purpose. This effectively reverts ce6234b5 "add kmap_atomic_pte for mapping highpte pages". Signed-off-by: Ian Campbell <ian.campbell@citrix.com> LKML-Reference: <1267204562-11844-3-git-send-email-ian.campbell@citrix.com> Acked-by: Alok Kataria <akataria@vmware.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/xen')
-rw-r--r--arch/x86/xen/mmu.c22
1 files changed, 0 insertions, 22 deletions
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 350a3deedf2..f9eb7de74f4 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1427,24 +1427,6 @@ static void xen_pgd_free(struct mm_struct *mm, pgd_t *pgd)
#endif
}
-#ifdef CONFIG_HIGHPTE
-static void *xen_kmap_atomic_pte(struct page *page, enum km_type type)
-{
- pgprot_t prot = PAGE_KERNEL;
-
- /*
- * We disable highmem allocations for page tables so we should never
- * see any calls to kmap_atomic_pte on a highmem page.
- */
- BUG_ON(PageHighMem(page));
-
- if (PagePinned(page))
- prot = PAGE_KERNEL_RO;
-
- return kmap_atomic_prot(page, type, prot);
-}
-#endif
-
#ifdef CONFIG_X86_32
static __init pte_t mask_rw_pte(pte_t *ptep, pte_t pte)
{
@@ -1903,10 +1885,6 @@ static const struct pv_mmu_ops xen_mmu_ops __initdata = {
.alloc_pmd_clone = paravirt_nop,
.release_pmd = xen_release_pmd_init,
-#ifdef CONFIG_HIGHPTE
- .kmap_atomic_pte = xen_kmap_atomic_pte,
-#endif
-
#ifdef CONFIG_X86_64
.set_pte = xen_set_pte,
#else