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From: David Woodhouse <dwmw2@infradead.org>
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In-Reply-To: <20011204104047.A18147@flint.arm.linux.org.uk> 
In-Reply-To: <20011204104047.A18147@flint.arm.linux.org.uk>  <m3r8qcagt7.fsf@linux.local> <E16AIZ8-0008Re-00@the-village.bc.nu> <12969.1007315617@redhat.com> <m3r8qcagt7.fsf@linux.local> <25163.1007370678@redhat.com> 
To: Russell King <rmk@arm.linux.org.uk>
Cc: Christoph Rohland <cr@sap.com>, Alan Cox <alan@lxorguk.ukuu.org.uk>,
        Maciej Zenczykowski <maze@druid.if.uj.edu.pl>,
        linux-kernel@vger.kernel.org
Subject: Re: [OT] Wrapping memory. 
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Date: Tue, 04 Dec 2001 10:45:04 +0000
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rmk@arm.linux.org.uk said:
>  We actually still map the pages as cached, but when update_mmu_cache
> detects that a page has been mmapped more than once, we ensure that
> the other mappings in the current mm will fault when accessed.

Oooh. Can you do that without having phys->virt lookup? And what about 
mappings in other mms? Or are the ARM caches so broken that you have to 
flush the whole damn thing on mm switch anyway?

VIVT. Urgh.

--
dwmw2


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