From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] Use CONFIG_VECTORS_BASE instead of hardcoded 0xffff0000.
Date: Wed, 21 Oct 2009 09:09:38 +0100 [thread overview]
Message-ID: <20091021080938.GA28831@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <20091021090438.0ec458dd.benoit.fouet@free.fr>
On Wed, Oct 21, 2009 at 09:04:38AM +0200, Benoit Fouet wrote:
> Reading the DDI0344D (Cortex A8 r2p1 trm), it seemed to me that this
> was configurable with the security extension:
> http://infocentre.arm.com/help/topic/com.arm.doc.ddi0344d/Babfbcae.html
>
> although my patch was very likely the wrong approach (changing
> VECTORS_BASE does not really make sense, as this is the one that can
> not be remapped), there are still processors in the wild in which you
> can configure the base address of the exception vectors.
However, the page at 0xffff0000 on MMU processors is part of the
kernel<->user API and its address can not be changed.
As I say, the patch does not make any sense.
prev parent reply other threads:[~2009-10-21 8:09 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-20 16:07 [PATCH] Use CONFIG_VECTORS_BASE instead of hardcoded 0xffff0000 Benoit Fouet
2009-10-20 19:51 ` Linus Walleij
2009-10-20 20:10 ` Russell King - ARM Linux
2009-10-21 7:04 ` Benoit Fouet
2009-10-21 8:09 ` Russell King - ARM Linux [this message]
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