[Xen-bugs] [Bug 1227] Out of SW-IOMMU space, 3ware Raid controller/3w-xxxx module

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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1227





------- Comment #6 from fthain@xxxxxxxxxxxxxxxxxxx  2011-09-15 00:41 -------

This bug also affects an IBM x3550 server I've been maintaining. dmesg and xm
dmesg attached. Some specs:

Gentoo Hardened amd64 Xen-4.1.1

dom0 linux-2.6.32.45 kernel from Jeremy Fitzhardinge's xen/stable-2.6.32.x
branch commit 20a27c1e25b8550066902c9d6ca91631e656dfa3

There's no problem running vanilla 2.6.32.45 on bare metal.

The machine seems to be running OK with the above configuration (in testing for
14 hours and no crash yet, see first attachment), but when it was running Xen
4.0.1 and an earlier 2.6.32.24 dom0 build from xen-stable/2.6.32.x, the aacraid
driver failed immediately (see second attachment) in the same way reported by
others (apparently DMA buffer exhaustion):

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=596419

I'm a bit concerned that it will fail again. Can anyone recommend a suitable
value for swiotlb argument? Is it likely to help?

Here's some specs, in case it helps...

# lspci
00:00.0 Host bridge: Intel Corporation 5000X Chipset Memory Controller Hub (rev
31)
00:02.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express x8 Port
2-3 (rev 31)
00:03.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express x4 Port 3
(rev 31)
00:04.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express x8 Port
4-5 (rev 31)
00:05.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express x4 Port 5
(rev 31)
00:06.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express x4 Port 6
(rev 31)
00:07.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express x4 Port 7
(rev 31)
00:08.0 System peripheral: Intel Corporation 5000 Series Chipset DMA Engine
(rev 31)
00:10.0 Host bridge: Intel Corporation 5000 Series Chipset FSB Registers (rev
31)
00:10.1 Host bridge: Intel Corporation 5000 Series Chipset FSB Registers (rev
31)
00:10.2 Host bridge: Intel Corporation 5000 Series Chipset FSB Registers (rev
31)
00:11.0 Host bridge: Intel Corporation 5000 Series Chipset Reserved Registers
(rev 31)
00:13.0 Host bridge: Intel Corporation 5000 Series Chipset Reserved Registers
(rev 31)
00:15.0 Host bridge: Intel Corporation 5000 Series Chipset FBD Registers (rev
31)
00:16.0 Host bridge: Intel Corporation 5000 Series Chipset FBD Registers (rev
31)
00:1c.0 PCI bridge: Intel Corporation 631xESB/632xESB/3100 Chipset PCI Express
Root Port 1 (rev 09)
00:1d.0 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset UHCI USB
Controller #1 (rev 09)
00:1d.1 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset UHCI USB
Controller #2 (rev 09)
00:1d.2 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset UHCI USB
Controller #3 (rev 09)
00:1d.7 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset EHCI
USB2 Controller (rev 09)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev d9)
00:1f.0 ISA bridge: Intel Corporation 631xESB/632xESB/3100 Chipset LPC
Interface Controller (rev 09)
00:1f.1 IDE interface: Intel Corporation 631xESB/632xESB IDE Controller (rev
09)
00:1f.3 SMBus: Intel Corporation 631xESB/632xESB/3100 Chipset SMBus Controller
(rev 09)
01:01.0 VGA compatible controller: ATI Technologies Inc ES1000 (rev 02)
02:00.0 RAID bus controller: Adaptec AAC-RAID (Rocket) (rev 02)
03:00.0 PCI bridge: Broadcom EPB PCI-Express to PCI-X Bridge (rev c3)
04:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit
Ethernet (rev 12)
05:00.0 PCI bridge: Broadcom EPB PCI-Express to PCI-X Bridge (rev c3)
06:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit
Ethernet (rev 12)
10:00.0 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express Upstream Port
(rev 01)
10:00.3 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express to PCI-X
Bridge (rev 01)
11:00.0 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express Downstream
Port E1 (rev 01)
11:01.0 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express Downstream
Port E2 (rev 01)


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