linux-kernel - Re: [PATCH V5 0/3] perf/x86/amd: AMD Family 16h Data Breakpoint Extensions

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Message-ID: <20131002161547.GA15390@redhat.com>
Date:	Wed, 2 Oct 2013 18:15:47 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	suravee.suthikulpanit@....com
Cc:	fweisbec@...il.com, mingo@...nel.org, mingo@...hat.com,
	jacob.w.shin@...il.com, a.p.zijlstra@...llo.nl,
	acme@...stprotocols.net, hpa@...or.com, tgl@...ain.invalid,
	linux-kernel@...r.kernel.org, sherry.hurwitz@....com
Subject: Re: [PATCH V5 0/3] perf/x86/amd: AMD Family 16h Data Breakpoint
	Extensions

On 10/02, suravee.suthikulpanit@....com wrote:
>
> From: Suravee Suthikulpanit <suravee.suthikulpanit@....com>
>
> Frederic, this is the rebase of the V4 patch onto the linux-3.12.0-rc3 (linux.git),
> and retest.

But the code is the same? If yes,

Reviewed-by: Oleg Nesterov <oleg@...hat.com>


To remind, a range on executable breakpoint is problematic, but I do
not blame this series. We need to fix the generic code and kill
HW_BREAKPOINT_X.

And, heh, it would be nice if the hardware could tell us the _exact_
address (from the range) which should be blamed.

Oleg.

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