From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: Joerg Roedel <joerg.roedel-5C7GfCeVMHo@public.gmane.org>
Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Re: [PATCH] SVM: forbid guest to execute monitor/mwait
Date: Thu, 22 Mar 2007 12:42:28 +0200 [thread overview]
Message-ID: <46025D94.8050606@qumranet.com> (raw)
In-Reply-To: <20070322101729.GC20139-5C7GfCeVMHo@public.gmane.org>
Joerg Roedel wrote:
> There is no danger for the host kernel but for the guest. If the
> userspace sets the monitor bit the guest will receive an #UD when trying
> to use it. And we don't want the guest to use it because it is not
> virtualized yet.
>
So, isn't a simpler fix not to set the monitor bit in cpuid?
The patch is correct, but I don't see why it's needed as any guest will
check the cpuid bit before using monitor.
--
error compiling committee.c: too many arguments to function
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next prev parent reply other threads:[~2007-03-22 10:42 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-21 18:47 [PATCH] SVM: forbid guest to execute monitor/mwait Joerg Roedel
[not found] ` <20070321184700.GA20139-5C7GfCeVMHo@public.gmane.org>
2007-03-22 7:38 ` Avi Kivity
[not found] ` <46023264.4010105-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-03-22 9:56 ` Joerg Roedel
[not found] ` <20070322095605.GB20139-5C7GfCeVMHo@public.gmane.org>
2007-03-22 10:06 ` Avi Kivity
[not found] ` <46025528.5010707-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-03-22 10:17 ` Joerg Roedel
[not found] ` <20070322101729.GC20139-5C7GfCeVMHo@public.gmane.org>
2007-03-22 10:42 ` Avi Kivity [this message]
[not found] ` <46025D94.8050606-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-03-22 11:07 ` Joerg Roedel
[not found] ` <20070322110733.GE20139-5C7GfCeVMHo@public.gmane.org>
2007-03-22 11:40 ` Avi Kivity
[not found] ` <46026B2A.2080501-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-03-22 11:56 ` Joerg Roedel
[not found] ` <20070322115602.GF20139-5C7GfCeVMHo@public.gmane.org>
2007-03-22 12:01 ` Avi Kivity
[not found] ` <4602700E.1030500-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-03-22 12:22 ` Joerg Roedel
[not found] ` <20070322122249.GG20139-5C7GfCeVMHo@public.gmane.org>
2007-03-22 12:33 ` Avi Kivity
[not found] ` <460277AE.9040403-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-03-22 12:46 ` Joerg Roedel
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