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Re: Upstream QEMU guest support policy ? Re: [PATCH v3 0/2] spapr: Use v
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From: |
Michael S. Tsirkin |
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Subject: |
Re: Upstream QEMU guest support policy ? Re: [PATCH v3 0/2] spapr: Use vIOMMU translation for virtio by default |
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Date: |
Wed, 11 Mar 2020 03:33:59 -0400 |
On Wed, Mar 11, 2020 at 12:12:47PM +1100, David Gibson wrote:
> I am wondering if we have to introduce an "svm=on" flag anyway. It's
> pretty ugly, since all it would be doing is changing defaults here and
> there for compatibilty with a possible future SVM transition, but
> maybe it's the best we can do :/.
Frankly I'm surprised there's no way for the hypervisor to block VM
transition to secure mode. To me an inability to disable DRM looks like
a security problem. Does not the ultravisor somehow allow
enabling/disabling this functionality from the hypervisor? It would be
even better if the hypervisor could block the guest from poking at the
ultravisor completely but I guess that would be too much to hope for.
- Re: [PATCH v3 1/2] spapr: Disable legacy virtio devices for pseries-5.0 and later, (continued)
Re: [PATCH v3 1/2] spapr: Disable legacy virtio devices for pseries-5.0 and later, Daniel P . Berrangé, 2020/03/10
Upstream QEMU guest support policy ? Re: [PATCH v3 0/2] spapr: Use vIOMMU translation for virtio by default, Daniel P . Berrangé, 2020/03/10
Re: Upstream QEMU guest support policy ? Re: [PATCH v3 0/2] spapr: Use vIOMMU translation for virtio by default, Daniel P . Berrangé, 2020/03/11
Re: Upstream QEMU guest support policy ? Re: [PATCH v3 0/2] spapr: Use vIOMMU translation for virtio by default, Michael S. Tsirkin, 2020/03/11
Re: Upstream QEMU guest support policy ? Re: [PATCH v3 0/2] spapr: Use vIOMMU translation for virtio by default, David Gibson, 2020/03/11
Re: Upstream QEMU guest support policy ? Re: [PATCH v3 0/2] spapr: Use vIOMMU translation for virtio by default, David Gibson, 2020/03/11
Re: Upstream QEMU guest support policy ? Re: [PATCH v3 0/2] spapr: Use vIOMMU translation for virtio by default, Daniel P . Berrangé, 2020/03/12
Re: [PATCH v3 0/2] spapr: Use vIOMMU translation for virtio by default, Greg Kurz, 2020/03/11