linux-kernel - Re: + uv-fix-incorrect-tlb-flush-all-issue.patch added to -mm tree

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Message-ID: <20120927064456.GC5996@gmail.com>
Date:	Thu, 27 Sep 2012 08:44:56 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	akpm@...ux-foundation.org
Cc:	mm-commits@...r.kernel.org, alex.shi@...el.com, cpw@....com,
	hpa@...or.com, jbeulich@...e.com, mingo@...e.hu,
	tglx@...utronix.de, linux-kernel@...r.kernel.org
Subject: Re: + uv-fix-incorrect-tlb-flush-all-issue.patch added to -mm tree


* akpm@...ux-foundation.org <akpm@...ux-foundation.org> wrote:

> The flush tlb optimization code has logical issue on UV 
> platform.  It doesn't flush the full range at all, since it 
> simply ignores its 'end' parameter (and hence also the "all" 
> indicator) in uv_flush_tlb_others() function.

In other words it's a user-space data corruptor showstopper bug 
fix for the UV platform, which should get high tip:x86/urgent 
priority, right?

It's generally useful to put such info right into the patch 
title. 'fix issue' sounds a tad too harmless.

Thanks,

	Ingo
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