linux-kernel - Re: questions on how x86 uses IPI for tlb invalidates

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Message-Id: <200811190244.52013.nickpiggin@yahoo.com.au>
Date:	Wed, 19 Nov 2008 02:44:51 +1100
From:	Nick Piggin <nickpiggin@...oo.com.au>
To:	Kumar Gala <kumar.gala@...escale.com>
Cc:	linux-kernel Kernel <linux-kernel@...r.kernel.org>
Subject: Re: questions on how x86 uses IPI for tlb invalidates

On Wednesday 19 November 2008 02:20, Kumar Gala wrote:
> I'm looking at adding some code into powerpc for doing tlb invalidate
> broadcasts via IPI and am looking at the x86 code as a model.  I was
> wondering how the x86 code ensures we aren't interrupted in the
> process of doing something like flush_tlb_page().

What's the problem with being interrupted?
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