similar to: [PATCH] virtio_ring: fix avail_wrap_counter in virtqueue_add_packed

The following changes since commit 2dde18cd1d8fac735875f2e4987f11817cc0bc2c: Linux 6.5 (2023-08-27 14:49:51 -0700) are available in the Git repository at: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git tags/for_linus for you to fetch changes up to 1acfe2c1225899eab5ab724c91b7e1eb2881b9ab: virtio_ring: fix avail_wrap_counter in virtqueue_add_packed (2023-09-03 18:10:24

The following changes since commit 2dde18cd1d8fac735875f2e4987f11817cc0bc2c: Linux 6.5 (2023-08-27 14:49:51 -0700) are available in the Git repository at: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git tags/for_linus for you to fetch changes up to 1acfe2c1225899eab5ab724c91b7e1eb2881b9ab: virtio_ring: fix avail_wrap_counter in virtqueue_add_packed (2023-09-03 18:10:24

On Wed, Nov 07, 2018 at 12:48:46PM -0500, Michael S. Tsirkin wrote: > On Wed, Jul 11, 2018 at 10:27:09AM +0800, Tiwei Bie wrote: > > This commit introduces the support (without EVENT_IDX) for > > packed ring. > > > > Signed-off-by: Tiwei Bie <tiwei.bie at intel.com> > > --- > > drivers/virtio/virtio_ring.c | 495 ++++++++++++++++++++++++++++++++++-

On Wed, Jul 11, 2018 at 10:27:09AM +0800, Tiwei Bie wrote: > This commit introduces the support (without EVENT_IDX) for > packed ring. > > Signed-off-by: Tiwei Bie <tiwei.bie at intel.com> > --- > drivers/virtio/virtio_ring.c | 495 ++++++++++++++++++++++++++++++++++- > 1 file changed, 487 insertions(+), 8 deletions(-) > > diff --git

On Wed, Jul 11, 2018 at 10:27:09AM +0800, Tiwei Bie wrote: > This commit introduces the support (without EVENT_IDX) for > packed ring. > > Signed-off-by: Tiwei Bie <tiwei.bie at intel.com> > --- > drivers/virtio/virtio_ring.c | 495 ++++++++++++++++++++++++++++++++++- > 1 file changed, 487 insertions(+), 8 deletions(-) > > diff --git

This commit introduces the support (without EVENT_IDX) for packed ring. Signed-off-by: Tiwei Bie <tiwei.bie at intel.com> --- drivers/virtio/virtio_ring.c | 474 ++++++++++++++++++++++++++++++++++- 1 file changed, 468 insertions(+), 6 deletions(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index f5ef5f42a7cf..eb9fd5207a68 100644 ---

This commit introduces the support (without EVENT_IDX) for packed ring. Signed-off-by: Tiwei Bie <tiwei.bie at intel.com> --- drivers/virtio/virtio_ring.c | 495 ++++++++++++++++++++++++++++++++++- 1 file changed, 487 insertions(+), 8 deletions(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index c4f8abc7445a..f317b485ba54 100644 ---

Switch to using the _SPLIT_ and _PACKED_ variants of vring flags in split 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

On Wed, Jul 11, 2018 at 10:27:10AM +0800, Tiwei Bie wrote: > This commit introduces the EVENT_IDX support in packed ring. > > Signed-off-by: Tiwei Bie <tiwei.bie at intel.com> Besides the usual comment about hard-coded constants like <<15: does this actually do any good for performance? We don't have to if we do not want to. > --- > drivers/virtio/virtio_ring.c |

On 2018?05?22? 16:16, Tiwei Bie wrote: > This commit introduces the support (without EVENT_IDX) for > packed ring. > > Signed-off-by: Tiwei Bie <tiwei.bie at intel.com> > --- > drivers/virtio/virtio_ring.c | 474 ++++++++++++++++++++++++++++++++++- > 1 file changed, 468 insertions(+), 6 deletions(-) > > diff --git a/drivers/virtio/virtio_ring.c

On 2018?05?22? 16:16, Tiwei Bie wrote: > This commit introduces the support (without EVENT_IDX) for > packed ring. > > Signed-off-by: Tiwei Bie <tiwei.bie at intel.com> > --- > drivers/virtio/virtio_ring.c | 474 ++++++++++++++++++++++++++++++++++- > 1 file changed, 468 insertions(+), 6 deletions(-) > > diff --git a/drivers/virtio/virtio_ring.c

On Wed, Jul 11, 2018 at 10:27:09AM +0800, Tiwei Bie wrote: > This commit introduces the support (without EVENT_IDX) for > packed ring. > > Signed-off-by: Tiwei Bie <tiwei.bie at intel.com> > --- > drivers/virtio/virtio_ring.c | 495 ++++++++++++++++++++++++++++++++++- > 1 file changed, 487 insertions(+), 8 deletions(-) > > diff --git

This commit introduces the EVENT_IDX support in packed ring. Signed-off-by: Tiwei Bie <tiwei.bie at intel.com> --- drivers/virtio/virtio_ring.c | 73 ++++++++++++++++++++++++++++++++---- 1 file changed, 65 insertions(+), 8 deletions(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index cb833a82054b..4b3f9e1a3cab 100644 --- a/drivers/virtio/virtio_ring.c +++

This commit introduces the EVENT_IDX support in packed ring. Signed-off-by: Tiwei Bie <tiwei.bie at intel.com> --- drivers/virtio/virtio_ring.c | 73 ++++++++++++++++++++++++++++++++---- 1 file changed, 65 insertions(+), 8 deletions(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index f317b485ba54..f79a1e17f7d1 100644 --- a/drivers/virtio/virtio_ring.c +++

This commit introduces the EVENT_IDX support in packed ring. Signed-off-by: Tiwei Bie <tiwei.bie at intel.com> --- drivers/virtio/virtio_ring.c | 74 ++++++++++++++++++++++++++++++++---- 1 file changed, 67 insertions(+), 7 deletions(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 983ce5ffda1b..aefd7ac40928 100644 --- a/drivers/virtio/virtio_ring.c +++

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,

DMA-related logic is separated from the virtqueue_add_packed(). DMA address will be saved as sg->dma_address, then virtqueue_add_packed() will use it directly. Unmap operation will be simpler. The purpose of this is to facilitate subsequent support to receive dma address mapped by drivers. Signed-off-by: Xuan Zhuo <xuanzhuo at linux.alibaba.com> --- drivers/virtio/virtio_ring.c | 37

DMA-related logic is separated from the virtqueue_add_vring_packed() to prepare for subsequent support for premapped. DMA address will be saved as sg->dma_address, then virtqueue_add_vring_packed() will use it directly. If it is a premapped scene, the transmitted sgs should have saved DMA address in dma_address, and in virtio core, we need to pass virtqueue_map_sgs(). Signed-off-by: Xuan

On Wed, May 31, 2023 at 03:36:51PM +0800, Jason Wang wrote: > On Wed, May 31, 2023 at 1:50?PM Michael S. Tsirkin <mst at redhat.com> wrote: > > > > On Wed, May 31, 2023 at 09:05:00AM +0800, Jason Wang wrote: > > > On Mon, May 29, 2023 at 6:03?PM Michael S. Tsirkin <mst at redhat.com> wrote: > > > > > > > > On Mon, May 29, 2023 at