linux-kernel - [RFC v2 0/2] Enable IOMMU support for pseries Secure VMs

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Message-Id: <1573254011-1604-1-git-send-email-linuxram@us.ibm.com>
Date:   Fri,  8 Nov 2019 15:00:09 -0800
From:   Ram Pai <linuxram@...ibm.com>
To:     linuxppc-dev@...ts.ozlabs.org
Cc:     benh@...nel.crashing.org, david@...son.dropbear.id.au,
        mpe@...erman.id.au, paulus@...abs.org, mdroth@...ux.vnet.ibm.com,
        hch@....de, linuxram@...ibm.com, andmike@...ibm.com,
        sukadev@...ux.vnet.ibm.com, mst@...hat.com, ram.n.pai@...il.com,
        aik@...abs.ru, cai@....pw, tglx@...utronix.de,
        bauerman@...ux.ibm.com, linux-kernel@...r.kernel.org
Subject: [RFC v2 0/2] Enable IOMMU support for pseries Secure VMs

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"

changelog:
	v2: added comments describing the changes.
		requested by Alexey and Michael Ellermen.

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 | 34 +++++++++++++++++++++-------------
 1 file changed, 21 insertions(+), 13 deletions(-)

-- 
1.8.3.1