Re: [Qemu-devel] [PATCH v7 1/4] spapr_iommu: Make in-kernel TCE table optional

2014-06-05 Thread Benjamin Herrenschmidt
On Fri, 2014-06-06 at 01:36 +0200, Alexander Graf wrote: > > It would be nicer if the guest had full control over the virtual > address range of a PCI device. It does ... within a HW window which can be different between P7 and P8. On P7 all PEs on a PHB share a single DMA address space that ge

Re: [Qemu-devel] [PATCH v7 1/4] spapr_iommu: Make in-kernel TCE table optional

2014-06-05 Thread Alexey Kardashevskiy
On 06/06/2014 09:36 AM, Alexander Graf wrote: > > On 06.06.14 01:17, Alexey Kardashevskiy wrote: >> On 06/06/2014 02:51 AM, Alexander Graf wrote: >>> On 05.06.14 16:33, Alexey Kardashevskiy wrote: On 06/05/2014 11:36 PM, Alexander Graf wrote: > On 05.06.14 15:33, Alexey Kardashevskiy wrot

Re: [Qemu-devel] [PATCH v7 1/4] spapr_iommu: Make in-kernel TCE table optional

2014-06-05 Thread Alexander Graf
On 06.06.14 01:17, Alexey Kardashevskiy wrote: On 06/06/2014 02:51 AM, Alexander Graf wrote: On 05.06.14 16:33, Alexey Kardashevskiy wrote: On 06/05/2014 11:36 PM, Alexander Graf wrote: On 05.06.14 15:33, Alexey Kardashevskiy wrote: On 06/05/2014 11:15 PM, Alexander Graf wrote: On 05.06.14

Re: [Qemu-devel] [PATCH v7 1/4] spapr_iommu: Make in-kernel TCE table optional

2014-06-05 Thread Alexey Kardashevskiy
On 06/06/2014 02:51 AM, Alexander Graf wrote: > > On 05.06.14 16:33, Alexey Kardashevskiy wrote: >> On 06/05/2014 11:36 PM, Alexander Graf wrote: >>> On 05.06.14 15:33, Alexey Kardashevskiy wrote: On 06/05/2014 11:15 PM, Alexander Graf wrote: > On 05.06.14 15:10, Alexey Kardashevskiy wrot

Re: [Qemu-devel] [PATCH v7 1/4] spapr_iommu: Make in-kernel TCE table optional

2014-06-05 Thread Alexander Graf
On 05.06.14 16:33, Alexey Kardashevskiy wrote: On 06/05/2014 11:36 PM, Alexander Graf wrote: On 05.06.14 15:33, Alexey Kardashevskiy wrote: On 06/05/2014 11:15 PM, Alexander Graf wrote: On 05.06.14 15:10, Alexey Kardashevskiy wrote: On 06/05/2014 11:06 PM, Alexander Graf wrote: On 05.06.14

Re: [Qemu-devel] [PATCH v7 1/4] spapr_iommu: Make in-kernel TCE table optional

2014-06-05 Thread Alexey Kardashevskiy
On 06/05/2014 11:36 PM, Alexander Graf wrote: > > On 05.06.14 15:33, Alexey Kardashevskiy wrote: >> On 06/05/2014 11:15 PM, Alexander Graf wrote: >>> On 05.06.14 15:10, Alexey Kardashevskiy wrote: On 06/05/2014 11:06 PM, Alexander Graf wrote: > On 05.06.14 08:43, Alexey Kardashevskiy wrot

Re: [Qemu-devel] [PATCH v7 1/4] spapr_iommu: Make in-kernel TCE table optional

2014-06-05 Thread Alexander Graf
On 05.06.14 15:33, Alexey Kardashevskiy wrote: On 06/05/2014 11:15 PM, Alexander Graf wrote: On 05.06.14 15:10, Alexey Kardashevskiy wrote: On 06/05/2014 11:06 PM, Alexander Graf wrote: On 05.06.14 08:43, Alexey Kardashevskiy wrote: On 06/05/2014 03:49 PM, Alexey Kardashevskiy wrote: POWER

Re: [Qemu-devel] [PATCH v7 1/4] spapr_iommu: Make in-kernel TCE table optional

2014-06-05 Thread Alexey Kardashevskiy
On 06/05/2014 11:15 PM, Alexander Graf wrote: > > On 05.06.14 15:10, Alexey Kardashevskiy wrote: >> On 06/05/2014 11:06 PM, Alexander Graf wrote: >>> On 05.06.14 08:43, Alexey Kardashevskiy wrote: On 06/05/2014 03:49 PM, Alexey Kardashevskiy wrote: > POWER KVM supports an KVM_CAP_SPAPR_TC

Re: [Qemu-devel] [PATCH v7 1/4] spapr_iommu: Make in-kernel TCE table optional

2014-06-05 Thread Alexander Graf
On 05.06.14 15:10, Alexey Kardashevskiy wrote: On 06/05/2014 11:06 PM, Alexander Graf wrote: On 05.06.14 08:43, Alexey Kardashevskiy wrote: On 06/05/2014 03:49 PM, Alexey Kardashevskiy wrote: POWER KVM supports an KVM_CAP_SPAPR_TCE capability which allows allocating TCE tables in the host ker

Re: [Qemu-devel] [PATCH v7 1/4] spapr_iommu: Make in-kernel TCE table optional

2014-06-05 Thread Alexey Kardashevskiy
On 06/05/2014 11:06 PM, Alexander Graf wrote: > > On 05.06.14 08:43, Alexey Kardashevskiy wrote: >> On 06/05/2014 03:49 PM, Alexey Kardashevskiy wrote: >>> POWER KVM supports an KVM_CAP_SPAPR_TCE capability which allows allocating >>> TCE tables in the host kernel memory and handle H_PUT_TCE reque

Re: [Qemu-devel] [PATCH v7 1/4] spapr_iommu: Make in-kernel TCE table optional

2014-06-05 Thread Alexander Graf
On 05.06.14 08:43, Alexey Kardashevskiy wrote: On 06/05/2014 03:49 PM, Alexey Kardashevskiy wrote: POWER KVM supports an KVM_CAP_SPAPR_TCE capability which allows allocating TCE tables in the host kernel memory and handle H_PUT_TCE requests targeted to specific LIOBN (logical bus number) right

Re: [Qemu-devel] [PATCH v7 1/4] spapr_iommu: Make in-kernel TCE table optional

2014-06-04 Thread Alexey Kardashevskiy
On 06/05/2014 03:49 PM, Alexey Kardashevskiy wrote: > POWER KVM supports an KVM_CAP_SPAPR_TCE capability which allows allocating > TCE tables in the host kernel memory and handle H_PUT_TCE requests > targeted to specific LIOBN (logical bus number) right in the host without > switching to QEMU. At t

[Qemu-devel] [PATCH v7 1/4] spapr_iommu: Make in-kernel TCE table optional

2014-06-04 Thread Alexey Kardashevskiy
POWER KVM supports an KVM_CAP_SPAPR_TCE capability which allows allocating TCE tables in the host kernel memory and handle H_PUT_TCE requests targeted to specific LIOBN (logical bus number) right in the host without switching to QEMU. At the moment this is used for emulated devices only and the han