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| author | Andy Lutomirski <luto@kernel.org> | 2015-07-15 19:29:36 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-07-17 12:50:11 +0200 |
| commit | 0b22930ebad563ae97ff3f8d7b9f12060b4c6e6b (patch) | |
| tree | 6d7cb96afdf0be056bddb15964bf5b2c0ec4a1a3 /arch/x86/kernel/nmi.c | |
| parent | x86/nmi/64: Switch stacks on userspace NMI entry (diff) | |
| download | linux-0b22930ebad563ae97ff3f8d7b9f12060b4c6e6b.tar.xz linux-0b22930ebad563ae97ff3f8d7b9f12060b4c6e6b.zip | |
x86/nmi/64: Improve nested NMI comments
I found the nested NMI documentation to be difficult to follow.
Improve the comments.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/nmi.c')
| -rw-r--r-- | arch/x86/kernel/nmi.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kernel/nmi.c b/arch/x86/kernel/nmi.c index d8766b1c9974..d05bd2e2ee91 100644 --- a/arch/x86/kernel/nmi.c +++ b/arch/x86/kernel/nmi.c @@ -408,8 +408,8 @@ static void default_do_nmi(struct pt_regs *regs) NOKPROBE_SYMBOL(default_do_nmi); /* - * NMIs can hit breakpoints which will cause it to lose its NMI context - * with the CPU when the breakpoint or page fault does an IRET. + * NMIs can page fault or hit breakpoints which will cause it to lose + * its NMI context with the CPU when the breakpoint or page fault does an IRET. * * As a result, NMIs can nest if NMIs get unmasked due an IRET during * NMI processing. On x86_64, the asm glue protects us from nested NMIs |