Re: Use CPUID to communicate with the hypervisor.

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To: Nakajima, Jun <jun.nakajima@...>

Cc: akataria@vmware.com <akataria@...>, 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: Friday, September 26, 2008 - 9:55 pm

Nakajima, Jun wrote:

quoted text

>>>
>> Agreed. However, that's obviously beyond our immediate control.
>
> Well, actually it's under full control of the Linux community because the _kernel_ defines such virtual or semi-hardware features. I'm not sure if that particular value (0x40000010) is proper, but we should be able to pick reasonable ones/ranges.
>

Uhm, no, they're defined by the _hypervisor_.

-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)

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