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[Xen-devel] Status of new FLR handling / necessary co-assignment of PCI

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] Status of new FLR handling / necessary co-assignment of PCI devices
From: Carsten Schiers <carsten@xxxxxxxxxx>
Date: Fri, 23 Jan 2009 14:13:16 +0100
Delivery-date: Fri, 23 Jan 2009 05:14:00 -0800
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Hi,

came across the following, known symptom: my board (see below) has four PCI 
slots,
equiped with a VGA card (left in Dom0), a DVB-C card (put in pv DomU #1), and 
two
DVB-S cards (put in pv Domain #2) with Debian Xen 3.2-1.

When using latest unstable build, the famous need to co-assign VGA adapter with 
all
other PCI devices appears. 

Question: is that considered a feature (and then, why did it work before) or a 
bug 
(with some patches arround in the list) that's still not fixed for pv?

Thanks,
Carsten.

data:/boot# lspci -tv
-[0000:00]-+-00.0  nVidia Corporation MCP65 Memory Controller
           +-01.0  nVidia Corporation MCP65 LPC Bridge
           +-01.1  nVidia Corporation MCP65 SMBus
           +-01.2  nVidia Corporation MCP65 Memory Controller
           +-02.0  nVidia Corporation MCP65 USB Controller
           +-02.1  nVidia Corporation MCP65 USB Controller
           +-06.0  nVidia Corporation MCP65 Ethernet
           +-08.0-[0000:01]--+-06.0  Matrox Graphics, Inc. MGA 2064W 
[Millennium]
           |                 +-07.0  Philips Semiconductors SAA7146
           |                 +-08.0  Techsan Electronics Co Ltd B2C2 FlexCopII 
DVB chip / Technisat SkyStar2 DVB card
           |                 \-09.0  Techsan Electronics Co Ltd B2C2 FlexCopII 
DVB chip / Technisat SkyStar2 DVB card
           +-09.0  nVidia Corporation MCP65 IDE
           +-0a.0  nVidia Corporation MCP65 AHCI Controller
           +-0c.0-[0000:02]----00.0  Realtek Semiconductor Co., Ltd. 
RTL8111/8168B PCI Express Gigabit Ethernet controller
           +-0e.0-[0000:03]----00.0  Realtek Semiconductor Co., Ltd. 
RTL8111/8168B PCI Express Gigabit Ethernet controller
           +-18.0  Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
HyperTransport Technology Configuration
           +-18.1  Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address 
Map
           +-18.2  Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM 
Controller
           \-18.3  Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
Miscellaneous Control



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