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[PATCH] i386: more vsyscall documentation

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Document a limitation of vsyscall-sysenter, since patches to fix it have
been rejected.

Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Chuck Ebbert 2006-03-23 02:59:48 -08:00 committed by Linus Torvalds
parent 635cf99a80
commit be0a39120c
1 changed files with 3 additions and 0 deletions
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3
arch/i386/kernel/vsyscall-sysenter.S
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@ -21,6 +21,9 @@
* instruction clobbers %esp, the user's %esp won't even survive entry
* into the kernel. We store %esp in %ebp. Code in entry.S must fetch
* arg6 from the stack.
*
* You can not use this vsyscall for the clone() syscall because the
* three dwords on the parent stack do not get copied to the child.
*/
.text
.globl __kernel_vsyscall