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authorJan Beulich <jbeulich@novell.com>2008-07-31 19:48:31 +0400
committerIngo Molnar <mingo@elte.hu>2008-08-15 19:31:50 +0400
commit66d4bdf22b8652cda215e2653c8bbec7a767ed57 (patch)
treebb351489a17d8ae8c597e94a8b1b1f860416f98c /arch/x86/kernel/head64.c
parent9744f5a32853642f8ed0749a1c9ed8cf9c9c9dc4 (diff)
downloadlinux-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>
Diffstat (limited to 'arch/x86/kernel/head64.c')
-rw-r--r--arch/x86/kernel/head64.c1
1 files changed, 1 insertions, 0 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();