Re: [PATCH v2 2/3] virtio_ring: Support DMA APIs

2015-10-28 Thread Christian Borntraeger
Am 28.10.2015 um 15:04 schrieb David Woodhouse: > On Wed, 2015-10-28 at 14:52 +0900, Christian Borntraeger wrote: >>0059b25a: e3201024 lg %r2,32(%r1) >> #0059b260: e310b0a4 lg %r1,160(%r11) >> >0059b266: 4810100c

Re: [PATCH v2 2/3] virtio_ring: Support DMA APIs

2015-10-28 Thread David Woodhouse
On Wed, 2015-10-28 at 14:52 +0900, Christian Borntraeger wrote: >0059b25a: e3201024 lg %r2,32(%r1) > #0059b260: e310b0a4 lg %r1,160(%r11) > >0059b266: 4810100c lh %r1,12(%r1) Precisely what is

Re: [PATCH v2 2/3] virtio_ring: Support DMA APIs

2015-10-27 Thread Christian Borntraeger
Am 28.10.2015 um 14:30 schrieb Andy Lutomirski: > +static void vring_unmap_one(const struct vring_virtqueue *vq, > + struct vring_desc *desc) > +{ > + u16 flags = virtio16_to_cpu(vq->vq.vdev, desc->flags); > + > + if (flags & VRING_DESC_F_INDIRECT) { > +