Re: [PATCH] Add I/O hypercalls for i386 paravirt

Chris Wright
2007-08-22T22:35:05Z

* James Courtier-Dutton (James@superbug.demon.co.uk) wrote:
> Ok, so I need to get a new CPU like the Intel Core Duo that has VT
> features? I have an old Pentium 4 at the moment, without any VT features.

Depends on your goals. You can certainly give a paravirt Xen guest[1]
physical hardware without any VT extentions. But that guest will be
able to DMA anywhere in memory without VT-d, so if it's an untrusted
guest you'd be taking a huge risk.

thanks,
-chris

[1] Note: this is with the xenbits.xensource.com kernel, not with a
kernel you'll get from kernel.org ATM.