From: Will Deacon <will.deacon@arm.com>
To: Christopher Covington <cov@codeaurora.org>
Cc: "linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
Russell King <linux@arm.linux.org.uk>,
Catalin Marinas <Catalin.Marinas@arm.com>,
Nicolas Pitre <nico@linaro.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] ARM: Add support for LPAE style CONTEXTIDR
Date: Mon, 24 Jun 2013 15:53:03 +0100 [thread overview]
Message-ID: <20130624145303.GA25582@mudshark.cambridge.arm.com> (raw)
In-Reply-To: <51C85A0D.3070400@codeaurora.org>
On Mon, Jun 24, 2013 at 03:39:09PM +0100, Christopher Covington wrote:
> Hi Will,
>
> On 06/24/2013 10:04 AM, Will Deacon wrote:
> [...]
>
> > What's the advantage of this approach, other than you get an extra byte's
> > worth of PID?
>
> In my view, the real advantage is that the the PID is located where people
> reading ARM Architecture Reference Manual are told they can find it.
Perhaps, but I'd usually expect a debugger or trace tools to do something
with the PID, and they likely expect it to be shifted, so you can't really
win.
Will
next prev parent reply other threads:[~2013-06-24 14:53 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-24 13:26 Christopher Covington
2013-06-24 14:04 ` Will Deacon
2013-06-24 14:39 ` Christopher Covington
2013-06-24 14:53 ` Will Deacon [this message]
2013-06-24 15:15 ` Christopher Covington
2013-06-26 17:11 ` Will Deacon
2013-06-26 18:02 ` Christopher Covington
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