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Re: [kvm-devel] [PATCH 2/3] Refactor hypercall infrastructure (v3)
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From: Avi Kivity
Subject:
Re: [kvm-devel] [PATCH 2/3] Refactor hypercall infrastructure (v3)
Date: Tuesday, September 18, 2007 - 6:10 am
Anthony Liguori wrote:
quoted text
> This patch refactors the current hypercall infrastructure to better support live > migration and SMP. It eliminates the hypercall page by trapping the UD > exception that would occur if you used the wrong hypercall instruction for the > underlying architecture and replacing it with the right one lazily. > > It also introduces the infrastructure to probe for hypercall available via > CPUID leaves 0x40000000. CPUID leaf 0x40000001 should be filled out by > userspace. > > A fall-out of this patch is that the unhandled hypercalls no longer trap to > userspace. There is very little reason though to use a hypercall to communicate > with userspace as PIO or MMIO can be used. There is no code in tree that uses > userspace hypercalls. > >
Surprisingly, this patch kills Windows XP (ACPI HAL). I'll try to find out why. -- error compiling committee.c: too many arguments to function -
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Messages in current thread:
[PATCH 2/3] Refactor hypercall infrastructure (v3)
, Anthony Liguori
, (Mon Sep 17, 12:57 pm)
RE: [kvm-devel] [PATCH 2/3] Refactor hypercall infrastruct ...
, Nakajima, Jun
, (Mon Sep 17, 2:56 pm)
Re: [kvm-devel] [PATCH 2/3] Refactor hypercall infrastruct ...
, Avi Kivity
, (Tue Sep 18, 6:10 am)
Re: [kvm-devel] [PATCH 2/3] Refactor hypercall infrastruct ...
, Avi Kivity
, (Tue Sep 18, 6:12 am)
Re: [kvm-devel] [PATCH 2/3] Refactor hypercall infrastruct ...
, Avi Kivity
, (Tue Sep 18, 6:27 am)
Re: [kvm-devel] [PATCH 2/3] Refactor hypercall infrastruct ...
, Anthony Liguori
, (Tue Sep 18, 6:31 am)
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