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x86-32, amd: Move va_align definition to unbreak 32-bit build 

hpa reported that dfb09f9b7a breaks 32-bit
builds with the following error message:

/home/hpa/kernel/linux-tip.cpu/arch/x86/kernel/cpu/amd.c:437: undefined
reference to `va_align'
/home/hpa/kernel/linux-tip.cpu/arch/x86/kernel/cpu/amd.c:436: undefined
reference to `va_align'

This is due to the fact that va_align is a global in a 64-bit only
compilation unit. Move it to mmap.c where it is visible to both
subarches.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Link: http://lkml.kernel.org/r/1312633899-1131-1-git-send-email-bp@amd64.org
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Borislav Petkov 2011-08-06 14:31:38 +02:00 committed by H. Peter Anvin
parent 8fa8b03508
commit 9387f774d6
2 changed files with 4 additions and 5 deletions
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4
arch/x86/kernel/sys_x86_64.c
View File

@ -18,10 +18,6 @@
#include <asm/ia32.h>
#include <asm/syscalls.h>
struct __read_mostly va_alignment va_align = {
.flags = -1,
};
/*
* Align a virtual address to avoid aliasing in the I$ on AMD F15h.
*

5
arch/x86/mm/mmap.c
View File

@ -31,6 +31,10 @@
#include <linux/sched.h>
#include <asm/elf.h>
struct __read_mostly va_alignment va_align = {
.flags = -1,
};
static unsigned int stack_maxrandom_size(void)
{
unsigned int max = 0;
@ -42,7 +46,6 @@ static unsigned int stack_maxrandom_size(void)
return max;
}
/*
* Top of mmap area (just below the process stack).
*