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authorLinus Torvalds <torvalds@linux-foundation.org>2010-03-03 09:11:02 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-03 09:11:02 -0800
commit2a32f2db132264c356aea30a8270d3e68d96c509 (patch)
treef98f0e1b9d85c7964b8fc149f451ae77072c3c27 /arch/x86/xen
parentfeaf77d51a6e2e95f60c8095ac7282e610ede798 (diff)
parentf41496607e03ab99f263b8e26689ad0fc853007f (diff)
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Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: resource: Fix broken indentation resource: Fix generic page_is_ram() for partial RAM pages x86, paravirt: Remove kmap_atomic_pte paravirt op. x86, vmi: Disable highmem PTE allocation even when CONFIG_HIGHPTE=y x86, xen: Disable highmem PTE allocation even when CONFIG_HIGHPTE=y
Diffstat (limited to 'arch/x86/xen')
-rw-r--r--arch/x86/xen/enlighten.c7
-rw-r--r--arch/x86/xen/mmu.c21
2 files changed, 7 insertions, 21 deletions
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 36daccb..b607239 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -50,6 +50,7 @@
#include <asm/traps.h>
#include <asm/setup.h>
#include <asm/desc.h>
+#include <asm/pgalloc.h>
#include <asm/pgtable.h>
#include <asm/tlbflush.h>
#include <asm/reboot.h>
@@ -1094,6 +1095,12 @@ asmlinkage void __init xen_start_kernel(void)
__supported_pte_mask |= _PAGE_IOMAP;
+ /*
+ * Prevent page tables from being allocated in highmem, even
+ * if CONFIG_HIGHPTE is enabled.
+ */
+ __userpte_alloc_gfp &= ~__GFP_HIGHMEM;
+
/* Work out if we support NX */
x86_configure_nx();
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index bf4cd6b..f9eb7de 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1427,23 +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;
-
- if (PagePinned(page))
- prot = PAGE_KERNEL_RO;
-
- if (0 && PageHighMem(page))
- printk("mapping highpte %lx type %d prot %s\n",
- page_to_pfn(page), type,
- (unsigned long)pgprot_val(prot) & _PAGE_RW ? "WRITE" : "READ");
-
- 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)
{
@@ -1902,10 +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
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