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Re: [Qemu-devel] [PATCH 1/3] qemu-kvm: Invert svm-flag setting logic
From: |
Alexander Graf |
Subject: |
Re: [Qemu-devel] [PATCH 1/3] qemu-kvm: Invert svm-flag setting logic |
Date: |
Tue, 7 Sep 2010 14:37:33 +0200 |
On 07.09.2010, at 14:35, Avi Kivity wrote:
> 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?
Is that part fixed already? Joerg worked so hard on so many things that I lost
track of what works and what doesn't :).
Alex
- [Qemu-devel] [PATCH 0/3] Add svm cpuid features to qemu-kvm, Joerg Roedel, 2010/09/07
- [Qemu-devel] [PATCH 2/3] qemu-kvm: Set cpuid definition to 0 before initializing it, Joerg Roedel, 2010/09/07
- [Qemu-devel] [PATCH 3/3] qemu-kvm: Add svm cpuid features, Joerg Roedel, 2010/09/07
- [Qemu-devel] [PATCH 1/3] qemu-kvm: Invert svm-flag setting logic, Joerg Roedel, 2010/09/07
- Re: [Qemu-devel] [PATCH 1/3] qemu-kvm: Invert svm-flag setting logic, Alexander Graf, 2010/09/07
- Re: [Qemu-devel] [PATCH 1/3] qemu-kvm: Invert svm-flag setting logic, Daniel P. Berrange, 2010/09/07
- Re: [Qemu-devel] [PATCH 1/3] qemu-kvm: Invert svm-flag setting logic, Alexander Graf, 2010/09/07
- Re: [Qemu-devel] [PATCH 1/3] qemu-kvm: Invert svm-flag setting logic, Avi Kivity, 2010/09/07
- Re: [Qemu-devel] [PATCH 1/3] qemu-kvm: Invert svm-flag setting logic,
Alexander Graf <=
- Re: [Qemu-devel] [PATCH 1/3] qemu-kvm: Invert svm-flag setting logic, Avi Kivity, 2010/09/07
- Re: [Qemu-devel] [PATCH 1/3] qemu-kvm: Invert svm-flag setting logic, Alexander Graf, 2010/09/07
- Re: [Qemu-devel] [PATCH 1/3] qemu-kvm: Invert svm-flag setting logic, Avi Kivity, 2010/09/07
- Re: [Qemu-devel] [PATCH 1/3] qemu-kvm: Invert svm-flag setting logic, Roedel, Joerg, 2010/09/07
- Re: [Qemu-devel] [PATCH 1/3] qemu-kvm: Invert svm-flag setting logic, Avi Kivity, 2010/09/07
- Re: [Qemu-devel] [PATCH 1/3] qemu-kvm: Invert svm-flag setting logic, Roedel, Joerg, 2010/09/07
- Re: [Qemu-devel] [PATCH 1/3] qemu-kvm: Invert svm-flag setting logic, Alexander Graf, 2010/09/07
- Re: [Qemu-devel] [PATCH 1/3] qemu-kvm: Invert svm-flag setting logic, Roedel, Joerg, 2010/09/07
- Re: [Qemu-devel] [PATCH 1/3] qemu-kvm: Invert svm-flag setting logic, Alexander Graf, 2010/09/07
- Re: [Qemu-devel] [PATCH 1/3] qemu-kvm: Invert svm-flag setting logic, Roedel, Joerg, 2010/09/07