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 15:04:24 +0100 [thread overview]
Message-ID: <20130624140424.GA24861@mudshark.cambridge.arm.com> (raw)
In-Reply-To: <1372080405-13365-1-git-send-email-cov@codeaurora.org>
Hi Christopher,
On Mon, Jun 24, 2013 at 02:26:45PM +0100, Christopher Covington wrote:
> Using the long-descriptor translation table format changes
> the layout of the CONTEXTIDR register.
>
> Signed-off-by: Christopher Covington <cov@codeaurora.org>
> ---
> arch/arm/mm/context.c | 37 +++++++++++++++++++++++++++----------
> 1 file changed, 27 insertions(+), 10 deletions(-)
Hmm, I'd deliberately written the code as-is, so that debuggers wouldn't
need context-sensitive parsing of the contextidr register depending on the
type of page tables in use.
What's the advantage of this approach, other than you get an extra byte's
worth of PID?
Will
next prev parent reply other threads:[~2013-06-24 14:05 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 [this message]
2013-06-24 14:39 ` Christopher Covington
2013-06-24 14:53 ` Will Deacon
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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