Re: [PATCH v10 12/13] KVM: PPC: Add support for IOMMU in-kernel handling

2013-09-08 Thread Gleb Natapov
On Fri, Sep 06, 2013 at 08:40:26PM +1000, Alexey Kardashevskiy wrote: This allows the host kernel to handle H_PUT_TCE, H_PUT_TCE_INDIRECT and H_STUFF_TCE requests targeted an IOMMU TCE table without passing them to user space which saves time on switching to user space and back. Both real

[PATCH v10 12/13] KVM: PPC: Add support for IOMMU in-kernel handling

2013-09-06 Thread Alexey Kardashevskiy
This allows the host kernel to handle H_PUT_TCE, H_PUT_TCE_INDIRECT and H_STUFF_TCE requests targeted an IOMMU TCE table without passing them to user space which saves time on switching to user space and back. Both real and virtual modes are supported. The kernel tries to handle a TCE request in