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authorRoland McGrath <roland@redhat.com>2007-01-26 00:56:52 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-01-26 13:50:58 -0800
commitc633090e3105e779c97d4978e5e3d7d66b291cfb (patch)
treeb04c22f501460e051e044e3a06516540cda930f8
parent3a0cfadb42e0a6dd221aa49232a65d2771063285 (diff)
downloadop-kernel-dev-c633090e3105e779c97d4978e5e3d7d66b291cfb.zip
op-kernel-dev-c633090e3105e779c97d4978e5e3d7d66b291cfb.tar.gz
[PATCH] x86_64 ia32 vDSO: define arch_vma_name
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>
-rw-r--r--arch/x86_64/ia32/syscall32.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86_64/ia32/syscall32.c b/arch/x86_64/ia32/syscall32.c
index 3ac9355..59f1fa1 100644
--- a/arch/x86_64/ia32/syscall32.c
+++ b/arch/x86_64/ia32/syscall32.c
@@ -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);
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