On Sun, Apr 5, 2009 at 6:15 AM, Robert P. J. Day <rpjday@xxxxxxxxxxxxxx> wrote:
>
> in order to play with KVM, i need to get a new laptop with either
> intel-vt or amd-v, and i figure this is as good a place to ask about
> that as any.
>
> is one of those virtualization extensions noticeably superior to the
> other? and, in perusing laptops online, it appears that comparable
> models with amd-v are less expensive than ones with intel-vt. is
> there a reason for that? or am i just imagining that?
AMD-V is better IMHO.
AMD's implementation along with NPT do help.
As far as VT-d is concerned ,AMD calls it simply IOMMU if I remember correctly.
Last I heard it was still to be ratified by PCI SIG IO-V commitee.
So a I guess PCI IOV is a vendor neutral name to it.
As far as processor independence is concerned, I am still under
impression that it is
somehow dependent because of the PCI bridge , which can perhaps vary
among AMD and Intel
based controllers. Yes/No?
Since Mircea has already spoken of few real mode instructions which
cannot be virtualized on Intel Processors,
thats good enough. AMD does provide virtualization of some real mode
instructions.
Perhaps I am sort of our of date with latest. If so, please feel free
to correct me.
PS:- My opinions are from my work with Xen year ago, so please bear
with inaccuracies.
Thanks,
--Pradeep
>
> rday
>
> p.s. i'm looking at a system with an AMD Turion 64 X2 Dual-Core
> Mobile TL-60 CPU. based on what i read, that has the amd-v
> extensions, but i just want to verify that -- can anyone confirm amd-v
> support in that chip? thanks.
>
>
> ========================================================================
> Robert P. J. Day
> Linux Consulting, Training and Annoying Kernel Pedantry:
> Have classroom, will lecture.
>
> http://crashcourse.ca Waterloo, Ontario, CANADA
> ========================================================================
>
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--
Pradeep
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