From: David Woodhouse <dwmw2@infradead.org>
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.
Date: Tue, 04 Dec 2001 10:45:04 +0000 [thread overview]
Message-ID: <7847.1007462704@redhat.com> (raw)
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>
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
next prev parent reply other threads:[~2001-12-04 10:46 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-01 22:03 [OT] Wrapping memory Maciej Zenczykowski
2001-12-01 22:24 ` Alan Cox
2001-12-02 1:52 ` Benjamin LaHaise
2001-12-02 10:24 ` Christoph Rohland
2001-12-02 17:53 ` David Woodhouse
2001-12-03 7:44 ` Christoph Rohland
2001-12-03 9:11 ` David Woodhouse
2001-12-04 10:40 ` Russell King
2001-12-04 16:39 ` Jamie Lokier
2001-12-04 21:03 ` Russell King
2001-12-04 10:45 ` David Woodhouse [this message]
2001-12-04 10:59 ` Russell King
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