From: Avi Kivity <avi@redhat.com>
To: Alexander Graf <agraf@suse.de>
Cc: Joerg Roedel <joerg.roedel@amd.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
qemu-devel@nongnu.org, kvm@vger.kernel.org
Subject: Re: [Qemu-devel] [PATCH 1/3] qemu-kvm: Invert svm-flag setting logic
Date: Tue, 07 Sep 2010 15:35:27 +0300 [thread overview]
Message-ID: <4C86318F.5050101@redhat.com> (raw)
In-Reply-To: <7BED2EED-8D8B-4D42-9208-D3D04C23C77D@suse.de>
On 09/07/2010 03:33 PM, Alexander Graf wrote:
>
>> I agree that its much nicer for mgmt tools if svm/vmx CPU flags can just be
>> toggled in the normal manner. Might we also want to have a enable/disable
>> nesting flag, so we can mirror the way real hardware lets you disable virt
>> in the BIOS even when the CPU(s) have the vmx/svm flags set ?
> I don't see how that's useful. We don't model anything like this in the kvm kernel module, so whatever we expose in user space would not be useful for detection testing. Also I'm fairly sure you either want nesting or you don't :). And if you want nesting, you probably want -cpu host too, since you lose migration anyways.
Why do you lost migration?
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2010-09-07 12:35 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-07 11:27 [Qemu-devel] [PATCH 0/3] Add svm cpuid features to qemu-kvm Joerg Roedel
2010-09-07 11:27 ` [Qemu-devel] [PATCH 1/3] qemu-kvm: Invert svm-flag setting logic Joerg Roedel
2010-09-07 12:23 ` Alexander Graf
2010-09-07 12:30 ` Daniel P. Berrange
2010-09-07 12:33 ` Alexander Graf
2010-09-07 12:35 ` Avi Kivity [this message]
2010-09-07 12:37 ` Alexander Graf
2010-09-07 12:43 ` Avi Kivity
2010-09-07 12:55 ` Alexander Graf
2010-09-07 12:59 ` Avi Kivity
2010-09-07 14:14 ` Roedel, Joerg
2010-09-07 13:51 ` Avi Kivity
2010-09-07 14:12 ` Roedel, Joerg
2010-09-07 14:14 ` Alexander Graf
2010-09-07 14:18 ` Roedel, Joerg
2010-09-07 14:16 ` Alexander Graf
2010-09-07 14:20 ` Roedel, Joerg
2010-09-07 14:22 ` Alexander Graf
2010-09-07 14:33 ` Roedel, Joerg
2010-09-07 14:36 ` Alexander Graf
2010-09-07 14:56 ` Avi Kivity
2010-09-07 11:27 ` [Qemu-devel] [PATCH 2/3] qemu-kvm: Set cpuid definition to 0 before initializing it Joerg Roedel
2010-09-07 11:27 ` [Qemu-devel] [PATCH 3/3] qemu-kvm: Add svm cpuid features Joerg Roedel
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