Re: [RFC 2/4] virtio: Override device's DMA OPS with virtio_direct_dma_ops selectively

2018-07-28 Thread Michael S. Tsirkin
On Sat, Jul 28, 2018 at 02:26:24PM +0530, Anshuman Khandual wrote: > On 07/20/2018 09:29 AM, Anshuman Khandual wrote: > > Now that virtio core always needs all virtio devices to have DMA OPS, we > > need to make sure that the structure it points is the right one. In the > > absence of

Call for Workshops Proposals - WorldCIST'19, La Toja Island, Spain

2018-07-28 Thread Maria Lemos
- CALL FOR WORKSHOPS PROPOSALS WorldCIST'19 - 7th World Conference on Information Systems and Technologies 16th-19th of April 2019, La Toja Island, Galicia, Spain http://www.worldcist.org/

Re: [RFC 2/4] virtio: Override device's DMA OPS with virtio_direct_dma_ops selectively

2018-07-28 Thread Anshuman Khandual
On 07/20/2018 09:29 AM, Anshuman Khandual wrote: > Now that virtio core always needs all virtio devices to have DMA OPS, we > need to make sure that the structure it points is the right one. In the > absence of VIRTIO_F_IOMMU_PLATFORM flag QEMU expects GPA from guest kernel. > In such case, virtio

Re: [RFC 0/4] Virtio uses DMA API for all devices

2018-07-28 Thread Anshuman Khandual
On 07/27/2018 05:01 PM, Michael S. Tsirkin wrote: > On Wed, Jul 25, 2018 at 08:56:23AM +0530, Anshuman Khandual wrote: >> Results with and without the patches are similar. > > Thanks! And another thing to try is virtio-net with > a fast NIC backend (40G and up). Unfortunately > at this point