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Date: Mon, 25 Dec 2006 13:36:37 +0100
From: Arjan van de Ven <arjan@...radead.org>
To: OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
Cc: OGAWA Hirofumi <hogawa@...aclelinux.com>,
Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -mm] MMCONFIG: Fix x86_64 ioremap base_address
> Current workaround is the following (both of linus and -mm),
>
> if (pci_mmcfg_config_num == 1 &&
> cfg->pci_segment_group_number == 0 &&
> (cfg->start_bus_number | cfg->end_bus_number) == 0)
> /* Assume it can access 256M range */
>
> But, if the system has bus number 0 only, it's a correct table.
> We may need to detect the broken system. blacklist?
or just... not assume 256Mb but assume broken?
--
if you want to mail me at work (you don't), use arjan (at) linux.intel.com
Test the interaction between Linux and your BIOS via http://www.linuxfirmwarekit.org
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