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authorKeir Fraser <keir.fraser@citrix.com>2007-12-12 10:19:44 +0000
committerKeir Fraser <keir.fraser@citrix.com>2007-12-12 10:19:44 +0000
commit8d8da82349d6e3253462dc22a8221df889ba27b8 (patch)
tree1df667bf62be55ac056a6212368bdab8afe26277 /docs/misc/vtd.txt
parent05fcdea6688a8b4b702a8eacee1004250a8b0aa4 (diff)
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docs: vtd.txt doc change
Added a note on conventional PCI device passthrough. Signed-off-by: Allen Kay <allen.m.kay@intel.com>
Diffstat (limited to 'docs/misc/vtd.txt')
-rw-r--r--docs/misc/vtd.txt14
1 files changed, 12 insertions, 2 deletions
diff --git a/docs/misc/vtd.txt b/docs/misc/vtd.txt
index c33074b84a..1d4e68ce5a 100644
--- a/docs/misc/vtd.txt
+++ b/docs/misc/vtd.txt
@@ -2,7 +2,7 @@ Title : How to do PCI Passthrough with VT-d
Authors : Allen Kay <allen.m.kay@intel.com>
Weidong Han <weidong.han@intel.com>
Created : October-24-2007
-Updated : October-24-2007
+Updated : December-11-2007
How to turn on VT-d in Xen
--------------------------
@@ -22,7 +22,7 @@ How to turn on VT-d in Xen
title Xen-Fedora Core (2.6.18-xen)
root (hd0,0)
kernel /boot/xen.gz com1=115200,8n1 console=com1 vtd=1
- 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
+ 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
module /boot/initrd-2.6.18-xen.img
12) reboot system
@@ -32,6 +32,15 @@ title Xen-Fedora Core (2.6.18-xen)
"ifconfig" to see if IP address has been assigned to NIC devices.
+Caveat on Conventional PCI Device Passthrough
+---------------------------------------------
+
+VT-d spec specifies that all conventional PCI devices behind a
+PCIe-to-PCI bridge have to be assigned to the same domain.
+
+PCIe devices do not have this restriction.
+
+
VT-d Enabled Systems
--------------------
@@ -48,3 +57,4 @@ http://www.dell.com/content/products/category.aspx/optix?c=us&cs=555&l=en&s=biz
- HP Compaq: DC7800
http://h10010.www1.hp.com/wwpc/us/en/en/WF04a/12454-12454-64287-321860-3328898.html
+