Messages in this thread | | | Date | Wed, 6 Nov 2019 13:06:37 -0500 | From | "Michael S. Tsirkin" <> | Subject | Re: [RFC v1 0/2] Enable IOMMU support for pseries Secure VMs |
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On Wed, Nov 06, 2019 at 12:59:50PM +1100, Alexey Kardashevskiy wrote: > > > On 05/11/2019 08:28, Ram Pai wrote: > > This patch series enables IOMMU support for pseries Secure VMs. > > > > > > Tested using QEMU command line option: > > > > "-device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x4, > > iommu_platform=on,disable-modern=off,disable-legacy=on" > > and > > > > "-device virtio-blk-pci,scsi=off,bus=pci.0, > > addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0, > > iommu_platform=on,disable-modern=off,disable-legacy=on" > > > Worth mentioning that SLOF won't boot with such devices as SLOF does not know about iommu_platform=on.
Shouldn't be hard to support: set up the iommu to allow everything and ack the feature. Right?
> > > > Ram Pai (2): > > powerpc/pseries/iommu: Share the per-cpu TCE page with the hypervisor. > > powerpc/pseries/iommu: Use dma_iommu_ops for Secure VMs aswell. > > > > arch/powerpc/platforms/pseries/iommu.c | 30 ++++++++++++++++++------------ > > 1 file changed, 18 insertions(+), 12 deletions(-) > > > > -- > Alexey
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