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| author | Vivek Goyal <vgoyal@in.ibm.com> | 2007-05-10 22:22:15 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-11 08:29:32 -0700 |
| commit | 069f11f9d66bc582fb40a37a7b92363f5d321969 (patch) | |
| tree | 70d07076d1026fedfeaa9a4cdf04ba1b3cf9aad6 /arch/x86_64 | |
| parent | 6041b57c6c99dcb59524f1bb0db0628c2689a464 (diff) | |
| download | linux-069f11f9d66bc582fb40a37a7b92363f5d321969.tar.gz linux-069f11f9d66bc582fb40a37a7b92363f5d321969.tar.bz2 linux-069f11f9d66bc582fb40a37a7b92363f5d321969.zip | |
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')
| -rw-r--r-- | arch/x86_64/kernel/head64.c | 7 |
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(); |