Re: [RFC v1 0/2] Enable IOMMU support for pseries Secure VMs

[Alexey Kardashevskiy]

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.

> 
> 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