[PATCH kernel 0/2] pseries: Enable SWIOTLB

[Alexey Kardashevskiy]

This is an attempt to allow PCI pass through to a secure guest when
hardware can only access insecure memory. This allows SWIOTLB use
for passed through devices.

Later on secure VMs will unsecure SWIOTLB bounce buffers for DMA
and the rest of the guest RAM will be unavailable to the hardware
by default.


This is based on sha1
e93c9c99a629 Linus Torvalds "Linux 5.1".

Please comment. Thanks.



Alexey Kardashevskiy (2):
  powerpc/pseries/dma: Allow swiotlb
  powerpc/pseries/dma: Enable swiotlb

 arch/powerpc/kernel/dma-iommu.c        | 36 ++++++++++++++++++++++++++
 arch/powerpc/platforms/pseries/setup.c |  5 ++++
 arch/powerpc/platforms/pseries/Kconfig |  1 +
 3 files changed, 42 insertions(+)

-- 
2.17.1