From: Manfred Spraul <manfred@colorfullife.com>
To: Dave Jones <davej@redhat.com>
Cc: Petr Vandrovec <vandrove@vc.cvut.cz>, linux-kernel@vger.kernel.org
Subject: Re: EFAULT reading /dev/mem... - broken x86info
Date: Mon, 10 Nov 2003 17:50:25 +0100 [thread overview]
Message-ID: <3FAFC1D1.3090309@colorfullife.com> (raw)
In-Reply-To: <20031110161114.GM10144@redhat.com>
Dave Jones wrote:
>I don't really have much insight into the behind the scenes going on's of
>DEBUG_PAGEALLOC, so I don't know if your suggestion has merit or not.
>Maybe Manfred can shed some insight?
>
DEBUG_PAGEALLOC is not the only user of change_page_attr: gart also
removes it's pages from the linear mapping.
I think x86info should accept the -EFAULT as an indication that the
targeted page is in use for other purpose, and definitively doesn't
contain a mptable. The other option would be to change both
DEBUG_PAGEALLOC and the AGP gart driver
> This does seem to be a regression IMO
>(Though I am somewhat biased as this breaks my app 8-)
>
It breaks either your app or your AGP driver - what's simpler to fix?
I'm biased, because if you update the AGP driver, then I must figure out
how to fix DEBUG_PAGEALLOC 8-)
--
Manfred
next prev parent reply other threads:[~2003-11-10 16:50 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-08 16:27 EFAULT reading /dev/mem... - broken x86info Petr Vandrovec
2003-11-10 13:55 ` Richard B. Johnson
2003-11-10 16:11 ` Dave Jones
2003-11-10 16:50 ` Manfred Spraul [this message]
2003-11-10 16:56 ` Dave Jones
2003-11-10 17:17 ` Manfred Spraul
2003-11-10 18:05 ` Petr Vandrovec
2003-11-10 18:59 ` Manfred Spraul
2003-11-10 19:36 ` Mika Penttilä
2003-11-10 19:47 ` Manfred Spraul
2003-11-10 20:24 ` Dave Jones
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