linux-kernel - Re: Paravirtualization on VMware's Platform [VMI].

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Message-ID: <4AB64EFC.10707@goop.org>
Date:	Sun, 20 Sep 2009 08:49:16 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Avi Kivity <avi@...hat.com>
CC:	Arjan van de Ven <arjan@...radead.org>,
	Ingo Molnar <mingo@...e.hu>,
	Alok Kataria <akataria@...are.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	the arch/x86 maintainers <x86@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Chris Wright <chrisw@...s-sol.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	"virtualization@...ts.osdl.org" <virtualization@...ts.osdl.org>,
	Greg KH <greg@...ah.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: Paravirtualization on VMware's Platform [VMI].

On 09/20/09 02:00, Avi Kivity wrote:
> On 09/20/2009 10:52 AM, Arjan van de Ven wrote:
>> On Sun, 20 Sep 2009 09:42:47 +0200
>> Ingo Molnar<mingo@...e.hu>  wrote:
>>
>>   
>>> If we were able to rip out all (or most) of paravirt from arch/x86 it
>>> would be tempting for other technical reasons - but the patch above
>>> is well localized.
>>>      
>> interesting question is if this would allow us to remove a few of the
>> paravirt hooks....
>>    
>
> kvm will be removing the pvmmu support soon; and Xen is talking about
> running paravirtualized guests in a vmx/svm container where they don't
> need most of the hooks.
>

We have no plans to drop support for non-vmx/svm capable processors, let
alone require ept/npt.

    J
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