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From: Richard Henderson <rth@twiddle.net>
To: Eric Johnson <ericj@mips.com>
Cc: Peter Maydell <peter.maydell@linaro.org>,
	Riku Voipio <riku.voipio@linaro.org>,
	Michael Tokarev <mjt@tls.msk.ru>, Alexander Graf <agraf@suse.de>,
	qemu-devel qemu-devel <qemu-devel@nongnu.org>,
	Aurelien Jarno <aurelien@aurel32.net>
Subject: Re: [Qemu-devel] [PATCH] linux-user: fix mips 32-on-64 prealloc case
Date: Thu, 03 Jan 2013 10:50:53 -0800	[thread overview]
Message-ID: <50E5D30D.1090308@twiddle.net> (raw)
In-Reply-To: <50E5D04E.8010107@mips.com>

On 01/03/2013 10:39 AM, Eric Johnson wrote:
> While making this change please keep in mind that newer MIPS32
> processors allow more than 31 bits of user address space (up to 3.5
> GiB) if they have Enhanced Virtual Address support.

Interesting.

Well, would you be able to help figure out exactly what's going on in:

  http://lists.gnu.org/archive/html/qemu-devel/2012-12/msg03233.html

and the thread leading up to it?

Now, I don't *know* that this is an emulation failure -- the linux-user-test
binary certainly isn't aware of enhanced virtual addresses.  So it's
possible that (older?) binaries can't cope with more than 2GB.

Alternately, it really is a translation problem somewhere...


r~

  reply	other threads:[~2013-01-03 18:51 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-01-03 13:17 [Qemu-devel] [PATCH] linux-user: fix mips 32-on-64 prealloc case Alexander Graf
2013-01-03 17:19 ` Peter Maydell
2013-01-03 17:24   ` Alexander Graf
2013-01-03 18:39     ` Eric Johnson
2013-01-03 18:50       ` Richard Henderson [this message]
2013-01-03 19:09         ` Eric Johnson
2013-01-08 15:45 ` Aurelien Jarno

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