Andy Lutomirski 3ee4298f44 x86/asm/entry: Create and use a 'TOP_OF_KERNEL_STACK_PADDING' macro ... x86_32, unlike x86_64, pads the top of the kernel stack, because the hardware stack frame formats are variable in size. Document this padding and give it a name. This should make no change whatsoever to the compiled kernel image. It also doesn't fix any of the current bugs in this area. Signed-off-by: Andy Lutomirski <luto@amacapital.net> Acked-by: Denys Vlasenko <dvlasenk@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/02bf2f54b8dcb76a62a142b6dfe07d4ef7fc582e.1426009661.git.luto@amacapital.net [ Fixed small details, such as a missed magic constant in entry_32.S pointed out by Denys Vlasenko. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>		2015-03-17 09:25:26 +01:00
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asm	x86/asm/entry: Create and use a 'TOP_OF_KERNEL_STACK_PADDING' macro	2015-03-17 09:25:26 +01:00
uapi/asm	x86/signal/64: Remove 'fs' and 'gs' from sigcontext	2015-03-17 09:25:26 +01:00