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From: Gerd Hoffmann <kraxel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
Cc: kvm-devel <kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
Subject: Re: [ANNOUNCE] kvm-43 release
Date: Mon, 24 Sep 2007 12:11:52 +0200	[thread overview]
Message-ID: <46F78D68.9020409@redhat.com> (raw)
In-Reply-To: <46F7889B.70000-atKUWr5tajBWk0Htik3J/w@public.gmane.org>

>> I *think* it happens because I'm changing guest page tables from outside
>> (i.e. host application), and the new intel pgtable optimization bits
>> don't expect that (yes, it is a vt box).
> 
> Well, the older implementation doesn't expect that either.  You can
> disable the optimization with bypass_guest_pf=0, though.

Thanks.  Using bypass_guest_pf=0 and irqchip_disable() brings things
back to -41 level of functionality.

kvm not expecting both guest and host app changing pagetables could
explain other problems I'm seeing though, so maybe i better fix that.
Long term it isn't planned to stay that way anyway, it's just handy for
proof-of-concept because userspace is very easy to hack and debug ...

thanks,
  Gerd



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      parent reply	other threads:[~2007-09-24 10:11 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-09-21  5:38 [ANNOUNCE] kvm-43 release Avi Kivity
     [not found] ` <46F358D2.9000009-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-09-21 15:23   ` Gerd Hoffmann
     [not found]     ` <46F3E1E7.7010602-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2007-09-22  6:36       ` Avi Kivity
     [not found]         ` <46F4B800.20408-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-09-24  9:43           ` Gerd Hoffmann
     [not found]             ` <46F786DF.7020600-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2007-09-24  9:51               ` Avi Kivity
     [not found]                 ` <46F7889B.70000-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-09-24 10:11                   ` Gerd Hoffmann [this message]

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