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[PATCH] i386: more vsyscall documentation
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>
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@ -21,6 +21,9 @@
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* instruction clobbers %esp, the user's %esp won't even survive entry
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* into the kernel. We store %esp in %ebp. Code in entry.S must fetch
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* arg6 from the stack.
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*
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* You can not use this vsyscall for the clone() syscall because the
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* three dwords on the parent stack do not get copied to the child.
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*/
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.text
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.globl __kernel_vsyscall
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