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Re: [Xen-devel] Re: [RFC] Hypercalls from HVM guests

from [Keir Fraser]

[Permanent Link][Original]

To:	"Stephen C. Tweedie" <sct@xxxxxxxxxx>
Subject:	Re: [Xen-devel] Re: [RFC] Hypercalls from HVM guests
From:	Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date:	Wed, 12 Apr 2006 18:05:52 +0100
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On 12 Apr 2006, at 16:39, Stephen C. Tweedie wrote:

CPUID never faults. Well, unless the processor doesn't support the
instruction, but you find that out from EFLAGS.


What does vmx_vmexit_do_cpuid() do then?  I doubt there are many
VMX-capable CPUs without cpuid().  :-)

Yes, you can make cpuid trap to the hypervisor if running an hvm guest.But that's quite different from a guest-visible trap or fault.


 -- Keir


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Re: [Xen-devel] [RFC] Hypercalls from HVM guests, (continued) Re: [Xen-devel] [RFC] Hypercalls from HVM guests, Steve Ofsthun RE: [Xen-devel] [RFC] Hypercalls from HVM guests, Petersson, Mats Re: [Xen-devel] [RFC] Hypercalls from HVM guests, Keir Fraser RE: [Xen-devel] [RFC] Hypercalls from HVM guests, Petersson, Mats Re: [Xen-devel] [RFC] Hypercalls from HVM guests, Steve Ofsthun Re: [Xen-devel] [RFC] Hypercalls from HVM guests, Anthony Liguori Re: [Xen-devel] [RFC] Hypercalls from HVM guests, Keir Fraser [Xen-devel] Re: [RFC] Hypercalls from HVM guests, Andi Kleen [Xen-devel] Re: [RFC] Hypercalls from HVM guests, Keir Fraser Re: [Xen-devel] Re: [RFC] Hypercalls from HVM guests, Stephen C. Tweedie Re: [Xen-devel] Re: [RFC] Hypercalls from HVM guests, Keir Fraser <= RE: [Xen-devel] [RFC] Hypercalls from HVM guests, Nakajima, Jun Re: [Xen-devel] [RFC] Hypercalls from HVM guests, Keir Fraser RE: [Xen-devel] [RFC] Hypercalls from HVM guests, Nakajima, Jun Re: [Xen-devel] [RFC] Hypercalls from HVM guests, Keir Fraser RE: [Xen-devel] [RFC] Hypercalls from HVM guests, Stephen C. Tweedie RE: [Xen-devel] [RFC] Hypercalls from HVM guests, Nakajima, Jun

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