Re: [dpdk-dev] [PATCH] vfio: fix sPAPR IOMMU DMA window size

2017-08-08 Thread Jonas Pfefferle1
"Ananyev, Konstantin" wrote on 08/08/2017 10:27:28 AM: > From: "Ananyev, Konstantin" > To: Alexey Kardashevskiy , Jonas Pfefferle > , "Burakov, Anatoly" > Cc: "dev@dpdk.org" > Date: 08/08/2017 10:27 AM > Subject: RE

Re: [dpdk-dev] [PATCH] vfio: fix sPAPR IOMMU DMA window size

2017-08-08 Thread Ananyev, Konstantin
> -Original Message- > From: dev [mailto:dev-boun...@dpdk.org] On Behalf Of Alexey Kardashevskiy > Sent: Tuesday, August 8, 2017 10:38 AM > To: Jonas Pfefferle ; Burakov, Anatoly > > Cc: dev@dpdk.org > Subject: Re: [dpdk-dev] [PATCH] vfio: fix sPAPR IOMMU DMA wind

Re: [dpdk-dev] [PATCH] vfio: fix sPAPR IOMMU DMA window size

2017-08-08 Thread Jonas Pfefferle1
Alexey Kardashevskiy wrote on 08/08/2017 09:38:00 AM: > From: Alexey Kardashevskiy > To: Jonas Pfefferle , anatoly.bura...@intel.com > Cc: dev@dpdk.org > Date: 08/08/2017 09:38 AM > Subject: Re: [PATCH] vfio: fix sPAPR IOMMU DMA window size > > On 08/08/17 01:11, Jonas Pfefferle wrote: > > DMA w

Re: [dpdk-dev] [PATCH] vfio: fix sPAPR IOMMU DMA window size

2017-08-08 Thread Alexey Kardashevskiy
On 08/08/17 01:11, Jonas Pfefferle wrote: > DMA window size needs to be big enough to span all memory segment's > physical addresses. We do not need multiple levels of IOMMU tables > as we already span ~70TB of physical memory with 16MB hugepages. > > Signed-off-by: Jonas Pfefferle > --- > lib/l

[dpdk-dev] [PATCH] vfio: fix sPAPR IOMMU DMA window size

2017-08-07 Thread Jonas Pfefferle
DMA window size needs to be big enough to span all memory segment's physical addresses. We do not need multiple levels of IOMMU tables as we already span ~70TB of physical memory with 16MB hugepages. Signed-off-by: Jonas Pfefferle --- lib/librte_eal/linuxapp/eal/eal_vfio.c | 25 +