Benjamin Herrenschmidt cd15b04844 powerpc/powernv: Add iommu DMA bypass support for IODA2 ... This patch adds the support for to create a direct iommu "bypass" window on IODA2 bridges (such as Power8) allowing to bypass iommu page translation completely for 64-bit DMA capable devices, thus significantly improving DMA performances. Additionally, this adds a hook to the struct iommu_table so that the IOMMU API / VFIO can disable the bypass when external ownership is requested, since in that case, the device will be used by an environment such as userspace or a KVM guest which must not be allowed to bypass translations. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>		2014-02-11 16:07:37 +11:00
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asm	powerpc/powernv: Add iommu DMA bypass support for IODA2	2014-02-11 16:07:37 +11:00
uapi/asm	Second batch of KVM updates. Some minor x86 fixes,	2014-01-31 08:37:32 -08:00