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| author | Ian Campbell <ian.campbell@citrix.com> | 2010-02-26 17:16:02 +0000 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2010-02-27 14:41:35 -0800 |
| commit | dad52fc01161afcb8798c609e009aed4d104927f (patch) | |
| tree | 6d31060cc3e484898c3f503204cdfc52cb5d4e03 /arch/x86/xen | |
| parent | 3249b7e1df6380e9d7bb3238f64f445bf614f787 (diff) | |
| download | blackbird-op-linux-dad52fc01161afcb8798c609e009aed4d104927f.tar.gz blackbird-op-linux-dad52fc01161afcb8798c609e009aed4d104927f.zip | |
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.c | 22 |
1 files changed, 0 insertions, 22 deletions
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 350a3deedf25..f9eb7de74f42 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 |
