Re: [PATCH v9 2/3] trace,x86: add x86 irq vector tracepoints

From: H. Peter Anvin
Date: Mon Feb 18 2013 - 18:51:40 EST

On 02/18/2013 03:45 PM, Seiji Aguchi wrote:
Not-yet-signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>

... so I was holding off on doing anything with it.

Heh, and I was waiting for comments from you before doing anything further with it ;-)

Email review deadlock!

So, how do you plan to push ahead with this patch?

I think I got all the cases, as NMIs causes the store/restore functions to be re-entrent without any locks.

if you think you got all the cases, you can do more testing.
What is your concern?

I hope this patch will be included in 3.9.

What about the following:

The base address of the IDT doesn't generally change... the one
exception is when we do the funny NMI workaround.

For that reason, I would be happier if we just restored the standard
value instead of saving/restoring stuff.


H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.

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