diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/xen/mmu.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 7247e5a62f27..a59070b09055 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -84,6 +84,7 @@ */ DEFINE_SPINLOCK(xen_reservation_lock); +#ifdef CONFIG_X86_32 /* * Identity map, in addition to plain kernel map. This needs to be * large enough to allocate page table pages to allocate the rest. @@ -91,7 +92,7 @@ DEFINE_SPINLOCK(xen_reservation_lock); */ #define LEVEL1_IDENT_ENTRIES (PTRS_PER_PTE * 4) static RESERVE_BRK_ARRAY(pte_t, level1_ident_pgt, LEVEL1_IDENT_ENTRIES); - +#endif #ifdef CONFIG_X86_64 /* l3 pud for userspace vsyscall mapping */ static pud_t level3_user_vsyscall[PTRS_PER_PUD] __page_aligned_bss; @@ -1628,7 +1629,7 @@ static void set_page_prot(void *addr, pgprot_t prot) if (HYPERVISOR_update_va_mapping((unsigned long)addr, pte, 0)) BUG(); } - +#ifdef CONFIG_X86_32 static void __init xen_map_identity_early(pmd_t *pmd, unsigned long max_pfn) { unsigned pmdidx, pteidx; @@ -1679,7 +1680,7 @@ static void __init xen_map_identity_early(pmd_t *pmd, unsigned long max_pfn) set_page_prot(pmd, PAGE_KERNEL_RO); } - +#endif void __init xen_setup_machphys_mapping(void) { struct xen_machphys_mapping mapping; @@ -1765,14 +1766,12 @@ void __init xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn) /* Note that we don't do anything with level1_fixmap_pgt which * we don't need. */ - /* Set up identity map */ - xen_map_identity_early(level2_ident_pgt, max_pfn); - /* Make pagetable pieces RO */ set_page_prot(init_level4_pgt, PAGE_KERNEL_RO); set_page_prot(level3_ident_pgt, PAGE_KERNEL_RO); set_page_prot(level3_kernel_pgt, PAGE_KERNEL_RO); set_page_prot(level3_user_vsyscall, PAGE_KERNEL_RO); + set_page_prot(level2_ident_pgt, PAGE_KERNEL_RO); set_page_prot(level2_kernel_pgt, PAGE_KERNEL_RO); set_page_prot(level2_fixmap_pgt, PAGE_KERNEL_RO); |