From: Linus Torvalds <torvalds@linux-foundation.org>
To: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Chuck Ebbert <cebbert@redhat.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
Daniel Ritz <daniel.ritz@gmx.ch>, Greg KH <greg@kroah.com>
Subject: Re: PCI resource problems caused by improper address rounding
Date: Tue, 18 Dec 2007 13:46:56 -0800 (PST) [thread overview]
Message-ID: <alpine.LFD.0.9999.0712181338150.21557@woody.linux-foundation.org> (raw)
In-Reply-To: <20071219002349.A12278@jurassic.park.msu.ru>
On Wed, 19 Dec 2007, Ivan Kokshaysky wrote:
>
> Doh. Let's fix the kernel first...
>
> Does this make any difference? (the patch is self explaining ;-)
Heh, indeed. Good catch - that
Prefetchable memory behind bridge: 0000000000000000-000000000fffffff
on device 00:01.0 does look totally broken, and it would make more sense
if it matched what the device has (and what /proc/iomem resports).
That said, Intel bridges tend to be transparent even when they *claim*
normal decode, so I wonder whether it actually matters in this case. But
your patch looks very obviously right.
So maybe the rest of the kernel and X both already did everything right,
and it was just this stupid bridge setup thing that was broken (and
forcing the IOMEM resource to below the 4G mark just hid it).
Linus
next prev parent reply other threads:[~2007-12-18 21:48 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-18 0:25 Chuck Ebbert
2007-12-18 0:57 ` Linus Torvalds
2007-12-18 17:34 ` Chuck Ebbert
2007-12-18 18:21 ` Linus Torvalds
2007-12-18 20:22 ` Richard Henderson
2007-12-18 21:09 ` Linus Torvalds
2007-12-18 21:46 ` Chuck Ebbert
2007-12-18 21:56 ` Linus Torvalds
2007-12-18 22:17 ` Richard Henderson
2007-12-18 21:51 ` Richard Henderson
2007-12-18 22:31 ` Linus Torvalds
2007-12-19 1:38 ` Linus Torvalds
2007-12-20 21:52 ` Richard Henderson
2007-12-20 22:24 ` Linus Torvalds
2007-12-21 0:39 ` Richard Henderson
2007-12-21 1:00 ` Linus Torvalds
2007-12-21 2:28 ` Benjamin Herrenschmidt
2007-12-18 22:16 ` Keith Packard
2007-12-19 0:29 ` Bjorn Helgaas
2007-12-18 21:23 ` Ivan Kokshaysky
2007-12-18 21:46 ` Linus Torvalds [this message]
2007-12-20 8:46 ` Ivan Kokshaysky
2007-12-20 21:21 ` Benjamin Herrenschmidt
2007-12-22 9:12 ` Andrew Morton
2007-12-22 9:20 ` Andrew Morton
2007-12-20 21:10 ` Benjamin Herrenschmidt
2007-12-22 9:22 ` Andrew Morton
[not found] <fa.WmGIH8th8MfmciABVSBi6whxeFE@ifi.uio.no>
[not found] ` <fa.Obg5E3fyax+MaF94//uo40q/Zyk@ifi.uio.no>
[not found] ` <fa./6K5nXEIpws4VU8HtJhQjF4AoGg@ifi.uio.no>
[not found] ` <fa.V82IIxMkW3eu+9B44NfoyYYQDP4@ifi.uio.no>
[not found] ` <fa.DM9AyNQQtam66XpKVeXeqS639os@ifi.uio.no>
[not found] ` <fa.f5O3U527Rv8DNk05hDFRjdCaeFE@ifi.uio.no>
2007-12-19 0:11 ` Robert Hancock
2007-12-19 0:55 ` Chuck Ebbert
2007-12-19 1:12 ` Richard Henderson
2007-12-19 3:12 ` Linus Torvalds
[not found] ` <fa.PJGSMm4TIW6lRYng/jDqooIvj8U@ifi.uio.no>
[not found] ` <fa.0UHHdYi5zqyJ2xOPhNk/BhJkxYM@ifi.uio.no>
2007-12-19 0:18 ` Robert Hancock
2007-12-19 0:38 ` Robert Hancock
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