search for: cd7e755484e3

...gh the DMA API. > > Signed-off-by: Thiago Jung Bauermann <bauerman at linux.ibm.com> > --- > drivers/virtio/virtio_ring.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c > index cd7e755484e3..321a27075380 100644 > --- a/drivers/virtio/virtio_ring.c > +++ b/drivers/virtio/virtio_ring.c > @@ -259,8 +259,11 @@ static bool vring_use_dma_api(struct virtio_device *vdev) > * not work without an even larger kludge. Instead, enable > * the DMA API if we're a Xen guest,...

...gh the DMA API. > > Signed-off-by: Thiago Jung Bauermann <bauerman at linux.ibm.com> > --- > drivers/virtio/virtio_ring.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c > index cd7e755484e3..321a27075380 100644 > --- a/drivers/virtio/virtio_ring.c > +++ b/drivers/virtio/virtio_ring.c > @@ -259,8 +259,11 @@ static bool vring_use_dma_api(struct virtio_device *vdev) > * not work without an even larger kludge. Instead, enable > * the DMA API if we're a Xen guest,...

...iptors in this patch (which is fine). > Or did I miss it? You didn't miss anything. :) I think it's a small bug in vhost, which Jason may fix very quickly, so I didn't post it. Below is the hack I used: diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index cd7e755484e3..42faea7d8cf8 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -980,6 +980,7 @@ static int virtqueue_add_indirect_packed(struct vring_virtqueue *vq, unsigned int i, n, err_idx; u16 head, id; dma_addr_t addr; + int c = 0; head = vq->packed.next_avail_idx;...

...ned-off-by: Thiago Jung Bauermann <bauerman at linux.ibm.com> > > --- > > drivers/virtio/virtio_ring.c | 5 ++++- > > 1 file changed, 4 insertions(+), 1 deletion(-) > > > > diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c > > index cd7e755484e3..321a27075380 100644 > > --- a/drivers/virtio/virtio_ring.c > > +++ b/drivers/virtio/virtio_ring.c > > @@ -259,8 +259,11 @@ static bool vring_use_dma_api(struct virtio_device *vdev) > > * not work without an even larger kludge. Instead, enable > > * the DMA API...

...ring and packed ring respectively. Signed-off-by: Tiwei Bie <tiwei.bie at intel.com> --- drivers/virtio/virtio_ring.c | 100 +++++++++++++++++++++-------------- 1 file changed, 59 insertions(+), 41 deletions(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index cd7e755484e3..2806f69c6c9f 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -371,17 +371,17 @@ static void vring_unmap_one_split(const struct vring_virtqueue *vq, flags = virtio16_to_cpu(vq->vq.vdev, desc->flags); - if (flags & VRING_DESC_F_INDIRECT) { + if (flags...

Hi, here is the next version of this patch-set. Previous versions can be found here: V1: https://lore.kernel.org/lkml/20190110134433.15672-1-joro at 8bytes.org/ V2: https://lore.kernel.org/lkml/20190115132257.6426-1-joro at 8bytes.org/ V3: https://lore.kernel.org/lkml/20190123163049.24863-1-joro at 8bytes.org/ V4: https://lore.kernel.org/lkml/20190129084342.26030-1-joro at 8bytes.org/

This is a follow up of the discussion in this thread: https://patchwork.ozlabs.org/patch/1001015/#2042353 Tiwei Bie (3): virtio_ring: define flags as shifts consistently virtio_ring: add VIRTIO_RING_NO_LEGACY virtio_ring: use new vring flags drivers/virtio/virtio_ring.c | 100 ++++++++++++++++++------------- include/uapi/linux/virtio_ring.h | 61 +++++++++++++------ 2 files changed,

This is a follow up of the discussion in this thread: https://patchwork.ozlabs.org/patch/1001015/#2042353 Tiwei Bie (3): virtio_ring: define flags as shifts consistently virtio_ring: add VIRTIO_RING_NO_LEGACY virtio_ring: use new vring flags drivers/virtio/virtio_ring.c | 100 ++++++++++++++++++------------- include/uapi/linux/virtio_ring.h | 61 +++++++++++++------ 2 files changed,

Hi, This patch set implements packed ring support in virtio driver. A performance test between pktgen (pktgen_sample03_burst_single_flow.sh) and DPDK vhost (testpmd/rxonly/vhost-PMD) has been done, I saw ~30% performance gain in packed ring in this case. To make this patch set work with below patch set for vhost, some hacks are needed to set the _F_NEXT flag in indirect descriptors (this should

Hi, This patch set implements packed ring support in virtio driver. A performance test between pktgen (pktgen_sample03_burst_single_flow.sh) and DPDK vhost (testpmd/rxonly/vhost-PMD) has been done, I saw ~30% performance gain in packed ring in this case. To make this patch set work with below patch set for vhost, some hacks are needed to set the _F_NEXT flag in indirect descriptors (this should