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From: Matthew Wilcox <matthew@wil.cx>
To: Jeff Chua <jeff.chua.linux@gmail.com>
Cc: Andrew Morton <akpm@osdl.org>,
	len.brown@intel.com, Komuro <komurojun-mbn@nifty.com>,
	linux-pm@osdl.org, Ernst Herzberg <earny@net4u.de>,
	Aaron Durbin <adurbin@google.com>,
	Alex Romosan <romosan@sycorax.lbl.gov>,
	openib-general@openib.org,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	linux-ide@vger.kernel.org, Linus Torvalds <torvalds@osdl.org>,
	oprofile-list@lists.sourceforge.net,
	Jens Axboe <jens.axboe@oracle.com>,
	Martin Lorenz <martin@lorenz.eu.org>,
	linux-pci@atrey.karlin.mff.cuni.cz,
	Elimar Riesebieter <riesebie@lxtec.de>,
	discuss@x86-64.org, Thierry Vignaud <tvignaud@mandriva.com>,
	Tim Chen <tim.c.chen@linux.intel.com>,
	phil.el@wanadoo.fr, gregkh@suse.de, Andi Kleen <ak@suse.de>,
	Christian <christiand59@web.de>, Adrian Bunk <bunk@stusta.de>,
	linux-acpi@vger.kernel.org, mingo@redhat.com,
	nfs@lists.sourceforge.net, Eric W. Bie
Subject: Re: [discuss] Re: 2.6.19-rc4: known unfixed regressions (v3)
Date: Tue, 7 Nov 2006 10:11:43 -0700	[thread overview]
Message-ID: <20061107171143.GU27140@parisc-linux.org> (raw)
In-Reply-To: <Pine.LNX.4.64.0611080056480.12828@silvia.corp.fedex.com>

On Wed, Nov 08, 2006 at 12:57:03AM +0800, Jeff Chua wrote:
> 2) this fails ...
> 
> e0000000-efffffff : 0000:00:02.0
> f0000000-ffffffff : PCI MMCONFIG 0
>    fed00000-fed003ff : HPET 0

Heh, no kidding ...

                num_buses = pci_mmcfg_config[i].end_bus_number -
                    pci_mmcfg_config[i].start_bus_number + 1;
                res->start = pci_mmcfg_config[i].base_address;
                res->end = res->start + (num_buses << 20) - 1;
                res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
                insert_resource(&iomem_resource, res);

So if we have 256 busses assigned, then we request 256MB and, well,
there's no room for anyone else.  This code was added by Andi in commit
de09bddb9d6f96785be470c832b881e6d72d589f

Hopefully he'll have a good idea how to restrict it.  Given your "working"
resource map, it seems like it should be limited to 16MB (and thus 16 busses).
But how to figure that out?

  parent reply	other threads:[~2006-11-07 17:11 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-11-07 16:57 [discuss] Re: 2.6.19-rc4: known unfixed regressions (v3) Jeff Chua
2006-11-07 17:11 ` Aaron Durbin
2006-11-07 17:11 ` Matthew Wilcox [this message]
2006-11-07 17:49   ` Eric W. Biederman
2006-11-07 17:50   ` Aaron Durbin
2006-11-07 17:56     ` Matthew Wilcox
2006-11-08 15:14     ` Andi Kleen
2006-11-08  7:39   ` Andi Kleen
2006-11-08 12:22     ` Matthew Wilcox
2006-11-08 16:05       ` Linus Torvalds
2006-11-08 17:38         ` Eric W. Biederman
2006-11-08 18:52           ` Linus Torvalds
2006-11-08 19:10             ` Aaron Durbin
2006-11-08 19:25               ` Linus Torvalds
2006-11-08 19:24             ` Eric W. Biederman
2006-11-10  6:52               ` Andi Kleen
  -- strict thread matches above, loose matches on Subject: below --
2006-11-07 16:56 Jeff Chua
2006-11-06 22:40 Jeff Chua
2006-11-07 15:50 ` Aaron Durbin
     [not found] <Pine.LNX.4.64.0610302019560.25218@g5.osdl.org>
2006-11-05  6:48 ` Adrian Bunk
2006-11-05  9:30   ` Jeff Chua
2006-11-06 17:47     ` [discuss] " Andi Kleen

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