Re: [PATCH v4 2/2] s390: virtio: PV needs VIRTIO I/O device protection

2020-07-07 Thread Pierre Morel
On 2020-07-07 13:14, Michael S. Tsirkin wrote: On Tue, Jul 07, 2020 at 11:46:33AM +0200, Cornelia Huck wrote: On Tue, 7 Jul 2020 10:44:37 +0200 Pierre Morel wrote: S390, protecting the guest memory against unauthorized host access needs to enforce VIRTIO I/O device protection through the

Re: [PATCH v4 2/2] s390: virtio: PV needs VIRTIO I/O device protection

2020-07-07 Thread Halil Pasic
On Tue, 7 Jul 2020 12:38:17 +0200 Pierre Morel wrote: > > > On 2020-07-07 11:46, Cornelia Huck wrote: > > On Tue, 7 Jul 2020 10:44:37 +0200 > > Pierre Morel wrote: > > > >> S390, protecting the guest memory against unauthorized host access > >> needs to enforce VIRTIO I/O device protection t

Re: [PATCH v4 2/2] s390: virtio: PV needs VIRTIO I/O device protection

2020-07-07 Thread Pierre Morel
On 2020-07-07 13:12, Christian Borntraeger wrote: On 07.07.20 10:44, Pierre Morel wrote: S390, protecting the guest memory against unauthorized host access needs to enforce VIRTIO I/O device protection through the use of VIRTIO_F_VERSION_1 and VIRTIO_F_IOMMU_PLATFORM. Signed-off-by: Pierre

Re: [PATCH v4 2/2] s390: virtio: PV needs VIRTIO I/O device protection

2020-07-07 Thread Michael S. Tsirkin
On Tue, Jul 07, 2020 at 11:46:33AM +0200, Cornelia Huck wrote: > On Tue, 7 Jul 2020 10:44:37 +0200 > Pierre Morel wrote: > > > S390, protecting the guest memory against unauthorized host access > > needs to enforce VIRTIO I/O device protection through the use of > > VIRTIO_F_VERSION_1 and VIRTIO

Re: [PATCH v4 2/2] s390: virtio: PV needs VIRTIO I/O device protection

2020-07-07 Thread Christian Borntraeger
On 07.07.20 10:44, Pierre Morel wrote: > S390, protecting the guest memory against unauthorized host access > needs to enforce VIRTIO I/O device protection through the use of > VIRTIO_F_VERSION_1 and VIRTIO_F_IOMMU_PLATFORM. > > Signed-off-by: Pierre Morel > --- > arch/s390/kernel/uv.c | 25 +

Re: [PATCH v4 2/2] s390: virtio: PV needs VIRTIO I/O device protection

2020-07-07 Thread Pierre Morel
On 2020-07-07 11:46, Cornelia Huck wrote: On Tue, 7 Jul 2020 10:44:37 +0200 Pierre Morel wrote: S390, protecting the guest memory against unauthorized host access needs to enforce VIRTIO I/O device protection through the use of VIRTIO_F_VERSION_1 and VIRTIO_F_IOMMU_PLATFORM. Hm... what a

Re: [PATCH v4 2/2] s390: virtio: PV needs VIRTIO I/O device protection

2020-07-07 Thread Cornelia Huck
On Tue, 7 Jul 2020 10:44:37 +0200 Pierre Morel wrote: > S390, protecting the guest memory against unauthorized host access > needs to enforce VIRTIO I/O device protection through the use of > VIRTIO_F_VERSION_1 and VIRTIO_F_IOMMU_PLATFORM. Hm... what about: "If protected virtualization is acti