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authorBorislav Petkov <bp@alien8.de>2016-08-03 19:14:29 +0200
committerIngo Molnar <mingo@kernel.org>2016-08-10 15:53:43 +0200
commit3e035305875cfa8a58c1ca573d0cfa6a7f201f27 (patch)
tree36abe0cf08dfd0b70504ce5c23c167e767a6dd83 /Documentation
parent5cf0791da5c162ebc14b01eb01631cfa7ed4fa6e (diff)
x86/entry: Clarify the RF saving/restoring situation with SYSCALL/SYSRET
Clarify why exactly RF cannot be restored properly by SYSRET to avoid confusion. No functionality change. Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Andy Lutomirski <luto@amacapital.net> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20160803171429.GA2590@nazgul.tnic Signed-off-by: Ingo Molnar <mingo@kernel.org>
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