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Re: Use CPUID to communicate with the hypervisor.

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From: H. Peter Anvin <hpa@...>
To: Nakajima, Jun <jun.nakajima@...>
Cc: akataria@vmware.com <akataria@...>, Gerd Hoffmann <kraxel@...>, Ingo Molnar <mingo@...>, Thomas Gleixner <tglx@...>, LKML <linux-kernel@...>, the arch/x86 maintainers <x86@...>, Jeremy Fitzhardinge <jeremy@...>, avi@redhat.com <avi@...>, Rusty Russell <rusty@...>, Zach Amsden <zach@...>, Daniel Hecht <dhecht@...>
Subject: Re: Use CPUID to communicate with the hypervisor.
Date: Monday, September 29, 2008 - 5:07 pm

Nakajima, Jun wrote:

Unless there is a central authority assigning these, "we" can do all we 
want, enough people will not pay attention.

Basically, there needs to be a standards document that describes the 
architecture, *and* needs to either have universal buy-in with all the 
vendors or imposed by an authority with enough clout to do so (Intel might.)

	-hpa
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Messages in current thread:
Use CPUID to communicate with the hypervisor., Alok Kataria, (Fri Sep 26, 7:46 pm)
Re: Use CPUID to communicate with the hypervisor., Gerd Hoffmann, (Mon Sep 29, 4:24 am)
Re: Use CPUID to communicate with the hypervisor., Alok Kataria, (Mon Sep 29, 1:55 pm)
Re: Use CPUID to communicate with the hypervisor., Gerd Hoffmann, (Mon Sep 29, 2:46 pm)
Re: Use CPUID to communicate with the hypervisor., Alok Kataria, (Mon Sep 29, 3:38 pm)
Re: Use CPUID to communicate with the hypervisor., Gerd Hoffmann, (Mon Sep 29, 6:46 pm)
Re: Use CPUID to communicate with the hypervisor., Alok Kataria, (Mon Sep 29, 8:33 pm)
Re: Use CPUID to communicate with the hypervisor., Gerd Hoffmann, (Tue Sep 30, 4:11 am)
[Hypervisors] TSC frequency change, Alok Kataria, (Wed Oct 1, 12:35 am)
Re: [Hypervisors] TSC frequency change, Gerd Hoffmann, (Wed Oct 1, 5:47 am)
Re: Use CPUID to communicate with the hypervisor., Zachary Amsden, (Tue Sep 30, 12:42 pm)
Re: Use CPUID to communicate with the hypervisor., Avi Kivity, (Thu Oct 2, 7:52 am)
RE: Use CPUID to communicate with the hypervisor., Nakajima, Jun, (Mon Sep 29, 4:55 pm)
Re: Use CPUID to communicate with the hypervisor., H. Peter Anvin, (Mon Sep 29, 5:07 pm)
Re: Use CPUID to communicate with the hypervisor., Jeremy Fitzhardinge, (Mon Sep 29, 5:28 pm)
Re: Use CPUID to communicate with the hypervisor., Alok Kataria, (Mon Sep 29, 8:12 pm)
Re: Use CPUID to communicate with the hypervisor., H. Peter Anvin, (Mon Sep 29, 8:31 pm)
RE: Use CPUID to communicate with the hypervisor., Nakajima, Jun, (Mon Sep 29, 8:56 pm)
Re: Use CPUID to communicate with the hypervisor., H. Peter Anvin, (Mon Sep 29, 8:58 pm)
RE: Use CPUID to communicate with the hypervisor., Nakajima, Jun, (Mon Sep 29, 9:14 pm)
Re: Use CPUID to communicate with the hypervisor., H. Peter Anvin, (Mon Sep 29, 10:21 pm)
RE: Use CPUID to communicate with the hypervisor., Nakajima, Jun, (Mon Sep 29, 11:14 pm)
Re: Use CPUID to communicate with the hypervisor., H. Peter Anvin, (Mon Sep 29, 11:48 pm)
Re: Use CPUID to communicate with the hypervisor., Zachary Amsden, (Mon Sep 29, 7:20 pm)
Re: Use CPUID to communicate with the hypervisor., H. Peter Anvin, (Mon Sep 29, 8:33 pm)
Re: Use CPUID to communicate with the hypervisor., H. Peter Anvin, (Mon Sep 29, 5:49 pm)
Re: Use CPUID to communicate with the hypervisor., H. Peter Anvin, (Mon Sep 29, 4:31 pm)
Re: Use CPUID to communicate with the hypervisor., H. Peter Anvin, (Mon Sep 29, 1:58 pm)
Re: Use CPUID to communicate with the hypervisor., Gleb Natapov, (Mon Sep 29, 2:55 am)
Re: Use CPUID to communicate with the hypervisor., Avi Kivity, (Mon Sep 29, 3:37 am)
RE: Use CPUID to communicate with the hypervisor., Nakajima, Jun, (Mon Sep 29, 11:32 am)
Re: Use CPUID to communicate with the hypervisor., Avi Kivity, (Tue Sep 30, 5:16 am)
Re: Use CPUID to communicate with the hypervisor., Bernd Eckenfels, (Mon Sep 29, 5:08 am)
Re: Use CPUID to communicate with the hypervisor., Gleb Natapov, (Mon Sep 29, 5:33 am)
Re: Use CPUID to communicate with the hypervisor., Jeremy Fitzhardinge, (Fri Sep 26, 9:02 pm)
Re: Use CPUID to communicate with the hypervisor., Alok Kataria, (Fri Sep 26, 11:11 pm)
Re: Use CPUID to communicate with the hypervisor., Jeremy Fitzhardinge, (Sun Sep 28, 1:01 am)
Re: Use CPUID to communicate with the hypervisor., Tim Deegan, (Mon Sep 29, 5:28 am)
Re: Use CPUID to communicate with the hypervisor., Avi Kivity, (Mon Sep 29, 5:44 am)
Re: Use CPUID to communicate with the hypervisor., H. Peter Anvin, (Sat Sep 27, 12:20 am)
Re: Use CPUID to communicate with the hypervisor., Alok Kataria, (Sat Sep 27, 1:37 am)
Re: Use CPUID to communicate with the hypervisor., H. Peter Anvin, (Fri Sep 26, 9:28 pm)
Re: Use CPUID to communicate with the hypervisor., H. Peter Anvin, (Fri Sep 26, 8:09 pm)
Re: Use CPUID to communicate with the hypervisor., Karel Zak, (Mon Sep 29, 4:56 pm)
Re: Use CPUID to communicate with the hypervisor., Alok Kataria, (Fri Sep 26, 8:30 pm)
Re: Use CPUID to communicate with the hypervisor., H. Peter Anvin, (Fri Sep 26, 8:32 pm)
RE: Use CPUID to communicate with the hypervisor., Nakajima, Jun, (Fri Sep 26, 8:59 pm)
Re: Use CPUID to communicate with the hypervisor., H. Peter Anvin, (Fri Sep 26, 9:55 pm)
RE: Use CPUID to communicate with the hypervisor., Nakajima, Jun, (Sat Sep 27, 12:52 am)