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Message-ID: <20070917133106.B21399@jurassic.park.msu.ru>
Date: Mon, 17 Sep 2007 13:31:06 +0400
From: Ivan Kokshaysky <ink@...assic.park.msu.ru>
To: Matthew Wilcox <matthew@....cx>
Cc: Robert Hancock <hancockr@...w.ca>, Greg KH <gregkh@...e.de>,
Shaohua Li <shaohua.li@...el.com>,
lkml <linux-kernel@...r.kernel.org>,
linux-pci <linux-pci@...ey.karlin.mff.cuni.cz>,
Andrew Morton <akpm@...ux-foundation.org>,
Jesse Barnes <jbarnes@...tuousgeek.org>
Subject: Re: [PATCH]PCI:disable resource decode in PCI BAR detection
On Sun, Sep 16, 2007 at 01:52:59PM -0600, Matthew Wilcox wrote:
> I don't think it would be that complicated. We could just delay probing
> for mmconfig until after the pci bus probes are done. No changes to
> other architectures needed.
Indeed. Seems like it's a way to go.
> I'm really disappointed with mmconfig. Here was a great chance to get
> rid of all the sucky performance problems of the past, and BIOS writers
> and chipset designers have fucked up the implementation so much that
> it's now the ugliest method for getting to pci config space. And it's
> the *only* method of getting to extended config space.
Same feeling...
Fortunately, it seems that we don't access the extended config space
during bus probe.
Ivan.
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