Re: [Qemu-devel] VFIO: Not require to make VFIO_IOMMU_MAP_DMA for MMAPED PCI bars

2013-02-18 Thread Alex Williamson
On Tue, 2013-02-19 at 04:56 +, Bhushan Bharat-R65777 wrote: > > > -Original Message- > > From: Alex Williamson [mailto:alex.william...@redhat.com] > > Sent: Tuesday, February 19, 2013 9:55 AM > > To: Bhushan Bharat-R65777 > > Cc: Yoder Stuart-B08248; Wood Scott-B07421; Graf Alexander-B

Re: [Qemu-devel] VFIO: Not require to make VFIO_IOMMU_MAP_DMA for MMAPED PCI bars

2013-02-18 Thread Bhushan Bharat-R65777
> -Original Message- > From: Alex Williamson [mailto:alex.william...@redhat.com] > Sent: Tuesday, February 19, 2013 9:55 AM > To: Bhushan Bharat-R65777 > Cc: Yoder Stuart-B08248; Wood Scott-B07421; Graf Alexander-B36701; qemu- > de...@nongnu.org; qemu-...@nongnu.org > Subject: Re: VFIO: N

Re: [Qemu-devel] VFIO: Not require to make VFIO_IOMMU_MAP_DMA for MMAPED PCI bars

2013-02-18 Thread Bhushan Bharat-R65777
> -Original Message- > From: Wood Scott-B07421 > Sent: Tuesday, February 19, 2013 9:39 AM > To: Bhushan Bharat-R65777 > Cc: Alex Williamson; Yoder Stuart-B08248; Wood Scott-B07421; Graf Alexander- > B36701; qemu-devel@nongnu.org; qemu-...@nongnu.org > Subject: Re: VFIO: Not require to mak

Re: [Qemu-devel] VFIO: Not require to make VFIO_IOMMU_MAP_DMA for MMAPED PCI bars

2013-02-18 Thread Alex Williamson
On Tue, 2013-02-19 at 04:05 +, Bhushan Bharat-R65777 wrote: > > > -Original Message- > > From: Alex Williamson [mailto:alex.william...@redhat.com] > > Sent: Thursday, February 14, 2013 11:57 PM > > To: Bhushan Bharat-R65777 > > Cc: Yoder Stuart-B08248; Wood Scott-B07421; Graf Alexander

Re: [Qemu-devel] VFIO: Not require to make VFIO_IOMMU_MAP_DMA for MMAPED PCI bars

2013-02-18 Thread Scott Wood
On 02/18/2013 10:05:20 PM, Bhushan Bharat-R65777 wrote: > -Original Message- > From: Alex Williamson [mailto:alex.william...@redhat.com] > Sent: Thursday, February 14, 2013 11:57 PM > To: Bhushan Bharat-R65777 > Cc: Yoder Stuart-B08248; Wood Scott-B07421; Graf Alexander-B36701; qemu-

Re: [Qemu-devel] VFIO: Not require to make VFIO_IOMMU_MAP_DMA for MMAPED PCI bars

2013-02-18 Thread Bhushan Bharat-R65777
> -Original Message- > From: Alex Williamson [mailto:alex.william...@redhat.com] > Sent: Thursday, February 14, 2013 11:57 PM > To: Bhushan Bharat-R65777 > Cc: Yoder Stuart-B08248; Wood Scott-B07421; Graf Alexander-B36701; qemu- > de...@nongnu.org; qemu-...@nongnu.org > Subject: Re: VFIO:

Re: [Qemu-devel] VFIO: Not require to make VFIO_IOMMU_MAP_DMA for MMAPED PCI bars

2013-02-14 Thread Alex Williamson
On Thu, 2013-02-14 at 08:22 +, Bhushan Bharat-R65777 wrote: > Hi Alex Williamson, > > I am able (with some hacks :)) to directly assign the e1000 PCI device > to KVM guest using VFIO on Freescale device. One of the problem I am > facing is about the DMA mapping in IOMMU for PCI device BARs. On

[Qemu-devel] VFIO: Not require to make VFIO_IOMMU_MAP_DMA for MMAPED PCI bars

2013-02-14 Thread Bhushan Bharat-R65777
Hi Alex Williamson, I am able (with some hacks :)) to directly assign the e1000 PCI device to KVM guest using VFIO on Freescale device. One of the problem I am facing is about the DMA mapping in IOMMU for PCI device BARs. On Freescale devices, the mmaped PCI device BARs are not required to be m