similar to: [PATCH] virtio_ring: Shadow available ring flags & index

Displaying 20 results from an estimated 9000 matches similar to: "[PATCH] virtio_ring: Shadow available ring flags & index"

2015 Nov 11
0
[PATCH] virtio_ring: Shadow available ring flags & index
On Tue, Nov 10, 2015 at 04:21:07PM -0800, Venkatesh Srinivas wrote: > Improves cacheline transfer flow of available ring header. > > Virtqueues are implemented as a pair of rings, one producer->consumer > avail ring and one consumer->producer used ring; preceding the > avail ring in memory are two contiguous u16 fields -- avail->flags > and avail->idx. A producer
2018 Apr 01
8
[RFC v2] virtio: support packed ring
Hello everyone, This RFC implements packed ring support for virtio driver. The code was tested with DPDK vhost (testpmd/vhost-PMD) implemented by Jens at http://dpdk.org/ml/archives/dev/2018-January/089417.html Minor changes are needed for the vhost code, e.g. to kick the guest. TODO: - Refinements and bug fixes; - Split into small patches; - Test indirect descriptor support; - Test/fix event
2018 Apr 01
8
[RFC v2] virtio: support packed ring
Hello everyone, This RFC implements packed ring support for virtio driver. The code was tested with DPDK vhost (testpmd/vhost-PMD) implemented by Jens at http://dpdk.org/ml/archives/dev/2018-January/089417.html Minor changes are needed for the vhost code, e.g. to kick the guest. TODO: - Refinements and bug fixes; - Split into small patches; - Test indirect descriptor support; - Test/fix event
2018 Mar 16
2
[PATCH RFC 2/2] virtio_ring: support packed ring
On 2018?02?23? 19:18, Tiwei Bie wrote: > Signed-off-by: Tiwei Bie <tiwei.bie at intel.com> > --- > drivers/virtio/virtio_ring.c | 699 +++++++++++++++++++++++++++++++++++++------ > include/linux/virtio_ring.h | 8 +- > 2 files changed, 618 insertions(+), 89 deletions(-) > > diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c > index
2018 Mar 16
2
[PATCH RFC 2/2] virtio_ring: support packed ring
On 2018?02?23? 19:18, Tiwei Bie wrote: > Signed-off-by: Tiwei Bie <tiwei.bie at intel.com> > --- > drivers/virtio/virtio_ring.c | 699 +++++++++++++++++++++++++++++++++++++------ > include/linux/virtio_ring.h | 8 +- > 2 files changed, 618 insertions(+), 89 deletions(-) > > diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c > index
2018 May 29
2
[RFC v5 2/5] virtio_ring: support creating packed ring
On 2018?05?22? 16:16, Tiwei Bie wrote: > This commit introduces the support for creating packed ring. > All split ring specific functions are added _split suffix. > Some necessary stubs for packed ring are also added. > > Signed-off-by: Tiwei Bie <tiwei.bie at intel.com> > --- > drivers/virtio/virtio_ring.c | 801 +++++++++++++++++++++++------------ >
2018 May 29
2
[RFC v5 2/5] virtio_ring: support creating packed ring
On 2018?05?22? 16:16, Tiwei Bie wrote: > This commit introduces the support for creating packed ring. > All split ring specific functions are added _split suffix. > Some necessary stubs for packed ring are also added. > > Signed-off-by: Tiwei Bie <tiwei.bie at intel.com> > --- > drivers/virtio/virtio_ring.c | 801 +++++++++++++++++++++++------------ >
2018 Sep 07
3
[PATCH net-next v2 2/5] virtio_ring: support creating packed ring
On Wed, Jul 11, 2018 at 10:27:08AM +0800, Tiwei Bie wrote: > This commit introduces the support for creating packed ring. > All split ring specific functions are added _split suffix. > Some necessary stubs for packed ring are also added. > > Signed-off-by: Tiwei Bie <tiwei.bie at intel.com> I'd rather have a patch just renaming split functions, then add all packed stuff
2018 Sep 07
3
[PATCH net-next v2 2/5] virtio_ring: support creating packed ring
On Wed, Jul 11, 2018 at 10:27:08AM +0800, Tiwei Bie wrote: > This commit introduces the support for creating packed ring. > All split ring specific functions are added _split suffix. > Some necessary stubs for packed ring are also added. > > Signed-off-by: Tiwei Bie <tiwei.bie at intel.com> I'd rather have a patch just renaming split functions, then add all packed stuff
2018 May 22
9
[RFC v5 0/5] virtio: support packed ring
Hello everyone, This RFC implements packed ring support in virtio driver. Some simple functional tests have been done with Jason's packed ring implementation in vhost (RFC v4): https://lkml.org/lkml/2018/5/16/501 Both of ping and netperf worked as expected w/ EVENT_IDX disabled. Ping worked as expected w/ EVENT_IDX enabled, but netperf didn't (A hack has been added in the driver to
2018 May 22
9
[RFC v5 0/5] virtio: support packed ring
Hello everyone, This RFC implements packed ring support in virtio driver. Some simple functional tests have been done with Jason's packed ring implementation in vhost (RFC v4): https://lkml.org/lkml/2018/5/16/501 Both of ping and netperf worked as expected w/ EVENT_IDX disabled. Ping worked as expected w/ EVENT_IDX enabled, but netperf didn't (A hack has been added in the driver to
2016 Aug 31
0
[PATCH v2] virtio_ring: Make interrupt suppression spec compliant
According to the spec, if the VIRTIO_RING_F_EVENT_IDX feature bit is negotiated the driver MUST set flags to 0. Not dirtying the available ring in virtqueue_disable_cb also has a minor positive performance impact, improving L1 dcache load missed by ~0.5% in vring_bench. Writes to the used event field (vring_used_event) are still unconditional. Cc: Michael S. Tsirkin <mst at redhat.com> Cc:
2016 Aug 31
0
[PATCH v2] virtio_ring: Make interrupt suppression spec compliant
According to the spec, if the VIRTIO_RING_F_EVENT_IDX feature bit is negotiated the driver MUST set flags to 0. Not dirtying the available ring in virtqueue_disable_cb also has a minor positive performance impact, improving L1 dcache load missed by ~0.5% in vring_bench. Writes to the used event field (vring_used_event) are still unconditional. Cc: Michael S. Tsirkin <mst at redhat.com> Cc:
2018 May 22
0
[RFC v5 2/5] virtio_ring: support creating packed ring
This commit introduces the support for creating packed ring. All split ring specific functions are added _split suffix. Some necessary stubs for packed ring are also added. Signed-off-by: Tiwei Bie <tiwei.bie at intel.com> --- drivers/virtio/virtio_ring.c | 801 +++++++++++++++++++++++------------ include/linux/virtio_ring.h | 8 +- 2 files changed, 546 insertions(+), 263 deletions(-)
2018 Jul 11
0
[PATCH net-next v2 2/5] virtio_ring: support creating packed ring
This commit introduces the support for creating packed ring. All split ring specific functions are added _split suffix. Some necessary stubs for packed ring are also added. Signed-off-by: Tiwei Bie <tiwei.bie at intel.com> --- drivers/virtio/virtio_ring.c | 801 +++++++++++++++++++++++------------ include/linux/virtio_ring.h | 8 +- 2 files changed, 546 insertions(+), 263 deletions(-)
2018 Jun 05
6
[RFC v6 0/5] virtio: support packed ring
Hello everyone, This RFC implements packed ring support in virtio driver. Some functional tests have been done with Jason's packed ring implementation in vhost (RFC v5): https://lwn.net/Articles/755862/ Both of ping and netperf worked as expected. TODO: - Refinements (for code and commit log); - More tests and bug fixes if any; - Send the formal patch set; RFC v5 -> RFC v6: - Avoid
2018 Jul 09
7
[PATCH net-next v1 0/5] virtio: support packed ring
Hello everyone, This patch set implements packed ring support in virtio driver. Some functional tests have been done with Jason's packed ring implementation in vhost: https://lkml.org/lkml/2018/7/3/33 Both of ping and netperf worked as expected. RFC (v6) -> v1: - Avoid extra virtio_wmb() in virtqueue_enable_cb_delayed_packed() when event idx is off (Jason); - Fix bufs calculation in
2018 Jul 11
15
[PATCH net-next v2 0/5] virtio: support packed ring
Hello everyone, This patch set implements packed ring support in virtio driver. Some functional tests have been done with Jason's packed ring implementation in vhost: https://lkml.org/lkml/2018/7/3/33 Both of ping and netperf worked as expected. v1 -> v2: - Use READ_ONCE() to read event off_wrap and flags together (Jason); - Add comments related to ccw (Jason); RFC (v6) -> v1: -
2018 Jul 11
15
[PATCH net-next v2 0/5] virtio: support packed ring
Hello everyone, This patch set implements packed ring support in virtio driver. Some functional tests have been done with Jason's packed ring implementation in vhost: https://lkml.org/lkml/2018/7/3/33 Both of ping and netperf worked as expected. v1 -> v2: - Use READ_ONCE() to read event off_wrap and flags together (Jason); - Add comments related to ccw (Jason); RFC (v6) -> v1: -
2018 Apr 25
9
[RFC v3 0/5] virtio: support packed ring
Hello everyone, This RFC implements packed ring support in virtio driver. Some simple functional tests have been done with Jason's packed ring implementation in vhost: https://lkml.org/lkml/2018/4/23/12 Both of ping and netperf worked as expected (with EVENT_IDX disabled). But there are below known issues: 1. Reloading the guest driver will break the Tx/Rx; 2. Zeroing the flags when