ia64/xen-unstable

changeset 16592:ca077fa59206

docs: vtd.txt doc change

Added a note on conventional PCI device passthrough.

Signed-off-by: Allen Kay <allen.m.kay@intel.com>
author Keir Fraser <keir.fraser@citrix.com>
date Wed Dec 12 10:19:44 2007 +0000 (2007-12-12)
parents 12cf63d3e4a2
children 8ae3f083490a
files docs/misc/vtd.txt
line diff
     1.1 --- a/docs/misc/vtd.txt	Wed Dec 12 10:08:54 2007 +0000
     1.2 +++ b/docs/misc/vtd.txt	Wed Dec 12 10:19:44 2007 +0000
     1.3 @@ -2,7 +2,7 @@ Title   : How to do PCI Passthrough with
     1.4  Authors : Allen Kay    <allen.m.kay@intel.com>
     1.5            Weidong Han  <weidong.han@intel.com>
     1.6  Created : October-24-2007
     1.7 -Updated : October-24-2007
     1.8 +Updated : December-11-2007
     1.9  
    1.10  How to turn on VT-d in Xen
    1.11  --------------------------
    1.12 @@ -22,7 +22,7 @@ 11) "hide" pci device from dom0 as follo
    1.13  title Xen-Fedora Core (2.6.18-xen)
    1.14          root (hd0,0)
    1.15          kernel /boot/xen.gz com1=115200,8n1 console=com1 vtd=1
    1.16 -        module /boot/vmlinuz-2.6.18.8-xen root=LABEL=/ ro console=tty0 console=ttyS0,115200,8n1 pciback.hide=(01:00.0)(03:00.0) pciback.verbose_request=1 apic=debug maxcpus=1
    1.17 +        module /boot/vmlinuz-2.6.18.8-xen root=LABEL=/ ro console=tty0 console=ttyS0,115200,8n1 pciback.hide=(01:00.0)(03:00.0) pciback.verbose_request=1 apic=debug
    1.18          module /boot/initrd-2.6.18-xen.img
    1.19  
    1.20  12) reboot system
    1.21 @@ -32,6 +32,15 @@ 15) start hvm guest and use "lspci" to s
    1.22      "ifconfig" to see if IP address has been assigned to NIC devices.
    1.23  
    1.24  
    1.25 +Caveat on Conventional PCI Device Passthrough
    1.26 +---------------------------------------------
    1.27 +
    1.28 +VT-d spec specifies that all conventional PCI devices behind a
    1.29 +PCIe-to-PCI bridge have to be assigned to the same domain.
    1.30 +
    1.31 +PCIe devices do not have this restriction.
    1.32 +
    1.33 +
    1.34  VT-d Enabled Systems
    1.35  --------------------
    1.36  
    1.37 @@ -48,3 +57,4 @@ http://www.dell.com/content/products/cat
    1.38  
    1.39  - HP Compaq:  DC7800
    1.40  http://h10010.www1.hp.com/wwpc/us/en/en/WF04a/12454-12454-64287-321860-3328898.html
    1.41 +