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2018 May 21
1
[RFC PATCH net-next 02/12] vhost_net: introduce vhost_exceeds_weight()
On Mon, 21 May 2018 17:04:23 +0800 Jason wrote:
> Signed-off-by: Jason Wang <jasowang at redhat.com>
> ---
> drivers/vhost/net.c | 13 ++++++++-----
> 1 file changed, 8 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
> index 15d191a..de544ee 100644
> --- a/drivers/vhost/net.c
> +++ b/drivers/vhost/net.c
> @@ -479,6
2020 Jun 03
1
[PATCH RFC 01/13] vhost: option to fetch descriptors through an independent struct
On 2020/6/3 ??5:48, Michael S. Tsirkin wrote:
> On Wed, Jun 03, 2020 at 03:13:56PM +0800, Jason Wang wrote:
>> On 2020/6/2 ??9:05, Michael S. Tsirkin wrote:
[...]
>>> +
>>> +static int fetch_indirect_descs(struct vhost_virtqueue *vq,
>>> + struct vhost_desc *indirect,
>>> + u16 head)
>>> +{
>>> + struct vring_desc desc;
2020 Jun 03
2
[PATCH RFC 01/13] vhost: option to fetch descriptors through an independent struct
On 2020/6/2 ??9:05, Michael S. Tsirkin wrote:
> The idea is to support multiple ring formats by converting
> to a format-independent array of descriptors.
>
> This costs extra cycles, but we gain in ability
> to fetch a batch of descriptors in one go, which
> is good for code cache locality.
>
> When used, this causes a minor performance degradation,
> it's been kept
2020 Jun 03
2
[PATCH RFC 01/13] vhost: option to fetch descriptors through an independent struct
On 2020/6/2 ??9:05, Michael S. Tsirkin wrote:
> The idea is to support multiple ring formats by converting
> to a format-independent array of descriptors.
>
> This costs extra cycles, but we gain in ability
> to fetch a batch of descriptors in one go, which
> is good for code cache locality.
>
> When used, this causes a minor performance degradation,
> it's been kept
2019 Apr 26
2
[PATCH net] vhost_net: fix possible infinite loop
On 2019/4/26 ??1:52, Michael S. Tsirkin wrote:
> On Thu, Apr 25, 2019 at 03:33:19AM -0400, Jason Wang wrote:
>> When the rx buffer is too small for a packet, we will discard the vq
>> descriptor and retry it for the next packet:
>>
>> while ((sock_len = vhost_net_rx_peek_head_len(net, sock->sk,
>> &busyloop_intr))) {
>> ...
>> /* On
2019 Apr 26
2
[PATCH net] vhost_net: fix possible infinite loop
On 2019/4/26 ??1:52, Michael S. Tsirkin wrote:
> On Thu, Apr 25, 2019 at 03:33:19AM -0400, Jason Wang wrote:
>> When the rx buffer is too small for a packet, we will discard the vq
>> descriptor and retry it for the next packet:
>>
>> while ((sock_len = vhost_net_rx_peek_head_len(net, sock->sk,
>> &busyloop_intr))) {
>> ...
>> /* On
2019 Apr 25
2
[PATCH net] vhost_net: fix possible infinite loop
When the rx buffer is too small for a packet, we will discard the vq
descriptor and retry it for the next packet:
while ((sock_len = vhost_net_rx_peek_head_len(net, sock->sk,
&busyloop_intr))) {
...
/* On overrun, truncate and discard */
if (unlikely(headcount > UIO_MAXIOV)) {
iov_iter_init(&msg.msg_iter, READ, vq->iov, 1, 1);
err = sock->ops->recvmsg(sock,
2019 Apr 25
2
[PATCH net] vhost_net: fix possible infinite loop
When the rx buffer is too small for a packet, we will discard the vq
descriptor and retry it for the next packet:
while ((sock_len = vhost_net_rx_peek_head_len(net, sock->sk,
&busyloop_intr))) {
...
/* On overrun, truncate and discard */
if (unlikely(headcount > UIO_MAXIOV)) {
iov_iter_init(&msg.msg_iter, READ, vq->iov, 1, 1);
err = sock->ops->recvmsg(sock,
2019 Nov 02
2
[PATCH nbdkit] server: Use GCC hints to move debug and error handling code out of hot paths.
For GCC only, define unlikely() macro. Use it on error paths to move
code out of the hot path.
In the server only, use the debug() macro (don't call nbdkit_debug
directly). This macro checks the verbose flag and moves the call to
nbdkit_debug out of the hot path.
---
server/connections.c | 11 ++++++-----
server/internal.h | 17 ++++++++++++++++-
server/plugins.c | 2 +-
2019 May 12
2
[PATCH net] vhost_net: fix possible infinite loop
On Sun, May 05, 2019 at 12:20:24PM +0800, Jason Wang wrote:
>
> On 2019/4/26 ??3:35, Jason Wang wrote:
> >
> > On 2019/4/26 ??1:52, Michael S. Tsirkin wrote:
> > > On Thu, Apr 25, 2019 at 03:33:19AM -0400, Jason Wang wrote:
> > > > When the rx buffer is too small for a packet, we will discard the vq
> > > > descriptor and retry it for the next
2019 May 12
2
[PATCH net] vhost_net: fix possible infinite loop
On Sun, May 05, 2019 at 12:20:24PM +0800, Jason Wang wrote:
>
> On 2019/4/26 ??3:35, Jason Wang wrote:
> >
> > On 2019/4/26 ??1:52, Michael S. Tsirkin wrote:
> > > On Thu, Apr 25, 2019 at 03:33:19AM -0400, Jason Wang wrote:
> > > > When the rx buffer is too small for a packet, we will discard the vq
> > > > descriptor and retry it for the next
2014 Nov 24
2
[PATCH v3 26/41] vhost: virtio 1.0 endian-ness support
Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
---
drivers/vhost/vhost.c | 93 +++++++++++++++++++++++++++++++--------------------
1 file changed, 56 insertions(+), 37 deletions(-)
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index c90f437..4d379ed 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -33,8 +33,8 @@ enum {
VHOST_MEMORY_F_LOG = 0x1,
};
2014 Nov 24
2
[PATCH v3 26/41] vhost: virtio 1.0 endian-ness support
Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
---
drivers/vhost/vhost.c | 93 +++++++++++++++++++++++++++++++--------------------
1 file changed, 56 insertions(+), 37 deletions(-)
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index c90f437..4d379ed 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -33,8 +33,8 @@ enum {
VHOST_MEMORY_F_LOG = 0x1,
};
2020 Jun 10
2
[PATCH RFC v6 02/11] vhost: use batched get_vq_desc version
On 2020/6/8 ??8:52, Michael S. Tsirkin wrote:
> As testing shows no performance change, switch to that now.
>
> Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
> Signed-off-by: Eugenio P?rez <eperezma at redhat.com>
> Link: https://lore.kernel.org/r/20200401183118.8334-3-eperezma at redhat.com
> Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
>
2020 Jun 10
2
[PATCH RFC v6 02/11] vhost: use batched get_vq_desc version
On 2020/6/8 ??8:52, Michael S. Tsirkin wrote:
> As testing shows no performance change, switch to that now.
>
> Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
> Signed-off-by: Eugenio P?rez <eperezma at redhat.com>
> Link: https://lore.kernel.org/r/20200401183118.8334-3-eperezma at redhat.com
> Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
>
2019 Apr 25
0
[PATCH net] vhost_net: fix possible infinite loop
On Thu, Apr 25, 2019 at 03:33:19AM -0400, Jason Wang wrote:
> When the rx buffer is too small for a packet, we will discard the vq
> descriptor and retry it for the next packet:
>
> while ((sock_len = vhost_net_rx_peek_head_len(net, sock->sk,
> &busyloop_intr))) {
> ...
> /* On overrun, truncate and discard */
> if (unlikely(headcount > UIO_MAXIOV))
2014 Nov 30
3
[PATCH v7 31/46] vhost: virtio 1.0 endian-ness support
Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
---
drivers/vhost/vhost.c | 93 +++++++++++++++++++++++++++++++--------------------
1 file changed, 56 insertions(+), 37 deletions(-)
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index c90f437..4d379ed 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -33,8 +33,8 @@ enum {
VHOST_MEMORY_F_LOG = 0x1,
};
2014 Nov 30
3
[PATCH v7 31/46] vhost: virtio 1.0 endian-ness support
Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
---
drivers/vhost/vhost.c | 93 +++++++++++++++++++++++++++++++--------------------
1 file changed, 56 insertions(+), 37 deletions(-)
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index c90f437..4d379ed 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -33,8 +33,8 @@ enum {
VHOST_MEMORY_F_LOG = 0x1,
};
2020 Apr 07
0
[PATCH v7 18/19] vhost: use batched version by default
As testing shows no performance change, switch to that now.
Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
Signed-off-by: Eugenio P?rez <eperezma at redhat.com>
Link: https://lore.kernel.org/r/20200401183118.8334-3-eperezma at redhat.com
Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
---
drivers/vhost/vhost.c | 251 +-----------------------------------------
2020 Apr 07
0
[PATCH v8 18/19] vhost: use batched version by default
As testing shows no performance change, switch to that now.
Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
Signed-off-by: Eugenio P?rez <eperezma at redhat.com>
Link: https://lore.kernel.org/r/20200401183118.8334-3-eperezma at redhat.com
Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
---
drivers/vhost/vhost.c | 251 +-----------------------------------------