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Re: [Xen-devel] PCI passthrough and 3.3.1/3.4.0

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] PCI passthrough and 3.3.1/3.4.0
From: Andy Burns <xen.lists@xxxxxxxxxxx>
Date: Sun, 8 Mar 2009 12:01:21 +0000
Cc: Yuji Shimada <shimada-yxb@xxxxxxxxxxxxxxx>
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2009/3/1 Keir Fraser <keir.fraser@xxxxxxxxxxxxx>:

> On 01/03/2009 11:16, "Andy Burns" <xen.lists@xxxxxxxxxxx> wrote:
>> I'll try Yuji's BAR alignment patches on CentOS
> Yes, worth some experimentation I think.

OK, I've built a centosplus 5.2 kernel for dom0

I have patched it to

1) re-enable my sky2 NICs

2) correctly size the saa7134 mmio area

3) include the first of Yuji's "page-aligned" patches with minor
tweaks to quirks.c to allow clean application.

I've added "reassign_resources reassigndev=0000:08:00.0" to my grub stanza,

I do see "PCI: resource reassign ON" in the console output, but no
"PCI: Disable device and release resources" message and lspci still
shows the device on a non-page aligned address

# lspci -v -s 08:00.0

08:00.0 Multimedia controller: Philips Semiconductors SAA7130 Video
Broadcast Decoder
        Subsystem: Compro Technology, Inc. Videomate DVB-T200
        Flags: medium devsel, IRQ 16
        Memory at febffc00 (32-bit, non-prefetchable) [disabled] [size=1K]
        Capabilities: [40] Power Management version 1

Any thoughts? Do I need to reassign the other devices behind the
00.1e.0 PCI bridge or the bridge itself?

# lspci -v -s 00:1e.0

00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92) (prog-if 01 [Su)
        Flags: bus master, fast devsel, latency 0
        Bus: primary=00, secondary=08, subordinate=08, sec-latency=32
        I/O behind bridge: 0000e000-0000efff
        Memory behind bridge: feb00000-febfffff
        Capabilities: [50] #0d [0000]

# lspci -t

           |                 \-00.1
           |                    \-00.1-[0000:06]--
           |                 +-01.0
           |                 \-03.0

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