From: "Michael S. Tsirkin" <mst@redhat.com>
To: Alexey Kardashevskiy <aik@ozlabs.ru>
Cc: andmike@us.ibm.com, Ram Pai <linuxram@us.ibm.com>,
mdroth@linux.vnet.ibm.com, linux-kernel@vger.kernel.org,
ram.n.pai@gmail.com, cai@lca.pw, tglx@linutronix.de,
sukadev@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org,
hch@lst.de, bauerman@linux.ibm.com, david@gibson.dropbear.id.au
Subject: Re: [RFC v1 0/2] Enable IOMMU support for pseries Secure VMs
Date: Wed, 6 Nov 2019 13:06:37 -0500 [thread overview]
Message-ID: <20191106130558-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <265679db-9cb3-1660-0cf6-97f740b1b48b@ozlabs.ru>
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
next prev parent reply other threads:[~2019-11-06 18:15 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-04 21:28 [RFC v1 0/2] Enable IOMMU support for pseries Secure VMs Ram Pai
2019-11-04 21:28 ` [RFC v1 1/2] powerpc/pseries/iommu: Share the per-cpu TCE page with the hypervisor Ram Pai
2019-11-04 21:28 ` [RFC v1 2/2] powerpc/pseries/iommu: Use dma_iommu_ops for Secure VMs aswell Ram Pai
2019-11-07 10:26 ` Michael Ellerman
2019-11-08 5:49 ` Ram Pai
2019-11-06 1:58 ` [RFC v1 1/2] powerpc/pseries/iommu: Share the per-cpu TCE page with the hypervisor Alexey Kardashevskiy
2019-11-06 17:01 ` Ram Pai
2019-11-07 5:58 ` Alexey Kardashevskiy
2019-11-07 10:29 ` Michael Ellerman
2019-11-08 6:05 ` Ram Pai
2019-11-06 1:59 ` [RFC v1 0/2] Enable IOMMU support for pseries Secure VMs Alexey Kardashevskiy
2019-11-06 16:46 ` Ram Pai
2019-11-06 18:06 ` Michael S. Tsirkin [this message]
2019-11-06 18:52 ` Michael Roth
2019-11-06 22:22 ` Ram Pai
2019-11-07 6:01 ` Alexey Kardashevskiy
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