[PATCH] x86_64: Save/restore CS in 64bit signal handlers and force __USER_CS for CS
This allows to run 64bit signal handlers in 64bit processes that run small code snippets in compat mode. Signed-off-by: NAndi Kleen <ak@suse.de> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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