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Re: oops in futex_init()

To: Manuel Lauss <mano@roarinelk.homelinux.net>
Subject: Re: oops in futex_init()
From: "Kevin D. Kissell" <kevink@paralogos.com>
Date: Thu, 30 Apr 2009 13:14:46 +0200
Cc: Ralf Baechle <ralf@linux-mips.org>, Linux-MIPS <linux-mips@linux-mips.org>
In-reply-to: <20090430104130.GA1878@roarinelk.homelinux.net>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <20090428124645.GA14347@roarinelk.homelinux.net> <20090429060317.GB15627@linux-mips.org> <20090429082556.GA22844@roarinelk.homelinux.net> <20090429083349.GB26289@linux-mips.org> <20090429114042.GA24576@roarinelk.homelinux.net> <20090429141411.GA25905@roarinelk.homelinux.net> <20090429143523.GA10242@linux-mips.org> <20090429153221.GA26387@roarinelk.homelinux.net> <20090430104130.GA1878@roarinelk.homelinux.net>
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Manuel Lauss wrote:
> Hi,
>
> This is really embarrassing:  The oops is what happens when you
> ioremap(0x10) and write 0xffffffff at the resulting address (0xa0000010).
>   
This pretty much implies that _CACHE_UNCACHED was passed in the flags
value to ioremap, so it simply returned the kseg1 address.  By any
chance is physical page zero also referenced somewhere as cacheable?

          Kevin K.

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