| commit | c58b0ab995f63edcbc3524a582ffa22277d1c650 | |
| author | Yinghai Lu <yinghai@kernel.org> | |
| Fri, 10 Jul 2009 16:36:20 +0000 (10 09:36 -0700) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Thu, 30 Jul 2009 21:39:55 +0000 (30 14:39 -0700) | ||
| tree | 578590922c0ac353d467d84f15c305c2b83712a6 | treesnapshot (tar.gz zip) |
| parent | ca8b86c5ae91b3041790085d296f5b8fbf71570b | commitdiff |
x86/pci: insert ioapic resource before assigning unassigned resources
commit 857fdc53a0a90c3ba7fcf5b1fb4c7a62ae03cf82 upstream.
Stephen reported that his DL585 G2 needed noapic after 2.6.22 (?)
Dann bisected it down to:
commit 30a18d6c3f1e774de656ebd8ff219d53e2ba4029
Date: Tue Feb 19 03:21:20 2008 -0800
x86: multi pci root bus with different io resource range, on
64-bit
It turns out that:
1. that AMD-based systems have two HT chains.
2. BIOS doesn't allocate resources for BAR 6 of devices under 8132 etc
3. that multi-peer-root patch will try to split root resources to peer
root resources according to PCI conf of NB
4. PCI core assigns unassigned resources, but they overlap with BARs
that are used by ioapic addr of io4 and 8132.
The reason: at that point ioapic address are not inserted yet. Solution
is to insert ioapic resources into the tree a bit earlier.
Reported-by: Stephen Frost <sfrost@snowman.net>
Reported-and-Tested-by: dann frazier <dannf@hp.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
commit 857fdc53a0a90c3ba7fcf5b1fb4c7a62ae03cf82 upstream.
Stephen reported that his DL585 G2 needed noapic after 2.6.22 (?)
Dann bisected it down to:
commit 30a18d6c3f1e774de656ebd8ff219d53e2ba4029
Date: Tue Feb 19 03:21:20 2008 -0800
x86: multi pci root bus with different io resource range, on
64-bit
It turns out that:
1. that AMD-based systems have two HT chains.
2. BIOS doesn't allocate resources for BAR 6 of devices under 8132 etc
3. that multi-peer-root patch will try to split root resources to peer
root resources according to PCI conf of NB
4. PCI core assigns unassigned resources, but they overlap with BARs
that are used by ioapic addr of io4 and 8132.
The reason: at that point ioapic address are not inserted yet. Solution
is to insert ioapic resources into the tree a bit earlier.
Reported-by: Stephen Frost <sfrost@snowman.net>
Reported-and-Tested-by: dann frazier <dannf@hp.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| arch/x86/include/asm/io_apic.h | diffblobblamehistory | |
| arch/x86/kernel/apic/io_apic.c | diffblobblamehistory | |
| arch/x86/pci/i386.c | diffblobblamehistory |