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From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: Amit Shah <amit.shah-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH] Refactor hypercall infrastructure (v2)
Date: Sun, 02 Dec 2007 16:32:00 +0200	[thread overview]
Message-ID: <4752C1E0.7080104@qumranet.com> (raw)
In-Reply-To: <200712021917.28706.amit.shah-atKUWr5tajBWk0Htik3J/w@public.gmane.org>

Amit Shah wrote:
> * Anthony Liguori wrote:
>   
>> 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.
>>     
>
> This doesn't work right for SVM. It keeps looping indefinitely; on a kvm_stat 
> run, I get about 230,000 light vm exits per second, with the hypercall never 
> returning to the guest.
>   

I just tested kvm.git with (the new) hypercall.flat testcase.  Seems to 
work fine.

-- 
error compiling committee.c: too many arguments to function


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  parent reply	other threads:[~2007-12-02 14:32 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-09-15 17:54 [PATCH] Refactor hypercall infrastructure (v2) Anthony Liguori
     [not found] ` <11898788932902-git-send-email-aliguori-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2007-09-15 17:54   ` [PATCH] Add the paravirtualization CPUID entry to QEMU (v2) Anthony Liguori
2007-09-16  9:08   ` [PATCH] Refactor hypercall infrastructure (v2) Avi Kivity
2007-12-02 13:47   ` Amit Shah
     [not found]     ` <200712021917.28706.amit.shah-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-12-02 14:32       ` Avi Kivity [this message]
2007-12-02 23:03       ` Anthony Liguori
     [not found]         ` <475339A6.9020207-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2007-12-03  8:46           ` Amit Shah
     [not found]             ` <200712031416.51710.amit.shah-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-12-03  9:00               ` Avi Kivity
     [not found]                 ` <4753C59A.4030206-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-12-03 11:30                   ` Amit Shah

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