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authorVivek Goyal <vgoyal@in.ibm.com>2007-05-10 22:22:15 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-11 08:29:32 -0700
commit069f11f9d66bc582fb40a37a7b92363f5d321969 (patch)
tree70d07076d1026fedfeaa9a4cdf04ba1b3cf9aad6 /arch/x86_64/kernel/head64.c
parent6041b57c6c99dcb59524f1bb0db0628c2689a464 (diff)
x86_64: display more intuitive error message if kernel is not 2MB aligned
o x86_64 kernel needs to be compiled for 2MB aligned addresses. Currently we are using BUILD_BUG_ON() to warn the user if he has not done so. But looks like folks are not finding message very intutive and don't open the respective c file to find problem source. (Bug 8439) arch/x86_64/kernel/head64.c: In function 'x86_64_start_kernel': arch/x86_64/kernel/head64.c:70: error: size of array 'type name' is negative o Using preprocessor directive #error to print a better message if CONFIG_PHYSICAL_START is not aligned to 2MB boundary. Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com> Cc: Andi Kleen <ak@suse.de> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86_64/kernel/head64.c')
-rw-r--r--arch/x86_64/kernel/head64.c7
1 files changed, 0 insertions, 7 deletions
diff --git a/arch/x86_64/kernel/head64.c b/arch/x86_64/kernel/head64.c
index 213d90e04755..6c34bdd22e26 100644
--- a/arch/x86_64/kernel/head64.c
+++ b/arch/x86_64/kernel/head64.c
@@ -62,13 +62,6 @@ void __init x86_64_start_kernel(char * real_mode_data)
{
int i;
- /*
- * Make sure kernel is aligned to 2MB address. Catching it at compile
- * time is better. Change your config file and compile the kernel
- * for a 2MB aligned address (CONFIG_PHYSICAL_START)
- */
- BUILD_BUG_ON(CONFIG_PHYSICAL_START & (__KERNEL_ALIGN - 1));
-
/* clear bss before set_intr_gate with early_idt_handler */
clear_bss();