55 messages in com.xensource.lists.xen-ia64-develRE: [Xen-ia64-devel] Time for hybrid ...
FromSent OnAttachments
Alex Williamson16 Jan 2008 16:01 
Xu, Anthony16 Jan 2008 19:06 
Isaku Yamahata16 Jan 2008 19:45 
Isaku Yamahata16 Jan 2008 19:56 
Xu, Anthony16 Jan 2008 20:39 
tgin...@free.fr17 Jan 2008 01:19 
tgin...@free.fr17 Jan 2008 01:26 
Xu, Anthony17 Jan 2008 01:43 
Juergen Gross17 Jan 2008 01:46 
Xu, Anthony17 Jan 2008 01:53 
tgin...@free.fr17 Jan 2008 03:09 
tgin...@free.fr17 Jan 2008 03:10 
Akio Takebe17 Jan 2008 04:43 
Xu, Anthony17 Jan 2008 05:26 
Xu, Anthony17 Jan 2008 05:32 
tgin...@free.fr17 Jan 2008 06:00 
Xu, Anthony17 Jan 2008 06:14 
Alex Williamson17 Jan 2008 09:57 
Jarod Wilson17 Jan 2008 14:18 
Mark Williamson17 Jan 2008 14:23 
Tristan Gingold17 Jan 2008 18:00 
Tristan Gingold17 Jan 2008 18:51 
Tristan Gingold17 Jan 2008 22:24 
Alex Williamson18 Jan 2008 15:43 
Xu, Anthony20 Jan 2008 18:05 
Xu, Anthony20 Jan 2008 22:57 
tgin...@free.fr21 Jan 2008 02:20 
tgin...@free.fr21 Jan 2008 05:44 
Dong, Eddie21 Jan 2008 07:15 
tgin...@free.fr21 Jan 2008 08:18 
Xu, Anthony21 Jan 2008 18:30 
Dong, Eddie21 Jan 2008 18:51 
tgin...@free.fr22 Jan 2008 01:28 
tgin...@free.fr22 Jan 2008 01:30 
Alex Williamson22 Jan 2008 10:02 
Alex Williamson22 Jan 2008 10:17 
Dong, Eddie22 Jan 2008 17:00 
tgin...@free.fr23 Jan 2008 00:44 
tgin...@free.fr24 Jan 2008 04:57 
Kayvan Sylvan24 Jan 2008 08:20 
Alex Williamson24 Jan 2008 12:43 
Kayvan Sylvan24 Jan 2008 13:18 
Alex Williamson24 Jan 2008 13:31 
Akio Takebe24 Jan 2008 17:05 
Kayvan Sylvan24 Jan 2008 17:16 
Xu, Anthony24 Jan 2008 19:17 
tgin...@free.fr25 Jan 2008 02:36 
Kayvan Sylvan25 Jan 2008 16:08 
Alex Williamson26 Jan 2008 16:01.pdf
Xu, Anthony27 Jan 2008 19:06 
Joseph Szczypek28 Jan 2008 13:27 
Alex Williamson28 Jan 2008 15:38 
Tristan Gingold28 Jan 2008 22:25 
Yang, Fred06 Feb 2008 13:59 
Tristan Gingold06 Feb 2008 21:00 
Subject:RE: [Xen-ia64-devel] Time for hybrid virtualization?
From:tgin...@free.fr (tgin@free.fr)
Date:01/17/2008 03:09:35 AM
List:com.xensource.lists.xen-ia64-devel

Quoting "Xu, Anthony" <anth@intel.com>:

tgin@free.fr wrote:

Hi,

here are my random thoughts:

* First, I am all for supporting dom0 VTi (as well as dom0 PV). This should be an intermediate step. Intel did that in the past, although I am not sure it was fully virtualized (what about GFW ?)

Dom0 Vti didn't use GFW, mostly it used native FW, while Xen provide some Fake information, such as memory map block, and Xen will inject some Sal/Pal call.

I am worried with Sal/Pal. How do you prevent dom0 from making host PAL calls?

* Building a dom0 vti means porting backend, balloon and all other drivers to Vti.

Dom0 Vti just mean that cpu virtulaization is using VT-i( privileged intruction emulation). All other should be same. We may need to modify backend, ballon and other drivers a little.

If we really want to reduce kernel maintenance, it would be great to be able to run an unmodified kernel. But I am maybe going too far!

* What about performance on Montecito ? If Montecito Vti is ~55% of Montvale, I'd prefer to keep PV.

KB on Montecito Vti can get 85% of native, Roughly calculate, Montecito Vti is ~95% of Montvale. Tukwila Vti should be faster, it adds more VT hardware support.

Ok, thanks.

Tristan.

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