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| author | Jan Beulich <jbeulich@novell.com> | 2008-07-31 19:48:31 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-08-15 19:31:50 +0400 |
| commit | 66d4bdf22b8652cda215e2653c8bbec7a767ed57 (patch) | |
| tree | bb351489a17d8ae8c597e94a8b1b1f860416f98c | |
| parent | 9744f5a32853642f8ed0749a1c9ed8cf9c9c9dc4 (diff) | |
| download | linux-66d4bdf22b8652cda215e2653c8bbec7a767ed57.tar.xz | |
x86-64: fix overlap of modules and fixmap areas
Plus add a build time check so this doesn't go unnoticed again.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | arch/x86/kernel/head64.c | 1 | ||||
| -rw-r--r-- | include/asm-x86/pgtable_64.h | 2 |
2 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index 1b318e903bf6..9bfc4d72fb2e 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -88,6 +88,7 @@ void __init x86_64_start_kernel(char * real_mode_data) BUILD_BUG_ON(!(MODULES_VADDR > __START_KERNEL)); BUILD_BUG_ON(!(((MODULES_END - 1) & PGDIR_MASK) == (__START_KERNEL & PGDIR_MASK))); + BUILD_BUG_ON(__fix_to_virt(__end_of_fixed_addresses) <= MODULES_END); /* clear bss before set_intr_gate with early_idt_handler */ clear_bss(); diff --git a/include/asm-x86/pgtable_64.h b/include/asm-x86/pgtable_64.h index ac5fff4cc58a..549144d03d99 100644 --- a/include/asm-x86/pgtable_64.h +++ b/include/asm-x86/pgtable_64.h @@ -151,7 +151,7 @@ static inline void native_pgd_clear(pgd_t *pgd) #define VMALLOC_END _AC(0xffffe1ffffffffff, UL) #define VMEMMAP_START _AC(0xffffe20000000000, UL) #define MODULES_VADDR _AC(0xffffffffa0000000, UL) -#define MODULES_END _AC(0xfffffffffff00000, UL) +#define MODULES_END _AC(0xffffffffff000000, UL) #define MODULES_LEN (MODULES_END - MODULES_VADDR) #ifndef __ASSEMBLY__ |