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[PATCH] x86_64 ia32 vDSO: define arch_vma_name

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This patch makes x86_64 define arch_vma_name for CONFIG_IA32_EMULATION.  This
makes the ia32 vDSO mapping appear in /proc/PID/maps with "[vdso]" for ia32
processes, as it does on native i386.

Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Roland McGrath 2007-01-26 00:56:52 -08:00 committed by Linus Torvalds
parent 3a0cfadb42
commit c633090e31
1 changed files with 8 additions and 0 deletions
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8
arch/x86_64/ia32/syscall32.c
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@ -82,6 +82,14 @@ int syscall32_setup_pages(struct linux_binprm *bprm, int exstack)
return 0;
}
const char *arch_vma_name(struct vm_area_struct *vma)
{
if (vma->vm_start == VSYSCALL32_BASE &&
vma->vm_mm && vma->vm_mm->task_size == IA32_PAGE_OFFSET)
return "[vdso]";
return NULL;
}
static int __init init_syscall32(void)
{
syscall32_page = (void *)get_zeroed_page(GFP_KERNEL);