- Original Message -
> On Fri, 2011-08-12 at 09:54 +0800, Jason Wang wrote:
> > As multi-queue nics were commonly used for high-end servers,
> > current single queue based tap can not satisfy the
> > requirement of scaling guest network performance as the
> > numbers of vcpus increase. So
- Original Message -
> On Fri, Aug 12, 2011 at 09:55:20AM +0800, Jason Wang wrote:
> > With the abstraction that each socket were a backend of a
> > queue for userspace, this patch adds multiqueue support for
> > tap device by allowing multiple sockets to be attached to a
> > tap device.
- Original Message -
> Le vendredi 12 août 2011 à 09:55 +0800, Jason Wang a écrit :
>
> >+ rxq = skb_get_rxhash(skb);
> >+ if (rxq) {
> >+ tfile = rcu_dereference(tun->tfiles[rxq % numqueues]);
> >+ if (tfile)
> >+ goto out;
> >+ }
>
> You can avoid an expensive divide with following tr
- Original Message -
> On Fri, 2011-08-12 at 09:55 +0800, Jason Wang wrote:
> > From: Krishna Kumar
> >
> > Implement mq virtio-net driver.
> >
> > Though struct virtio_net_config changes, it works with the old
> > qemu since the last element is not accessed unless qemu sets
> > VIRTIO_N
In certain circumstances, posix-aio-compat can incur a lot of latency:
- threads are created by vcpu threads, so if vcpu affinity is set,
aio threads inherit vcpu affinity. This can cause many aio threads
to compete for one cpu.
- we can create up to max_threads (64) aio threads in one go;
On Sat, 13 Aug 2011 11:51:01 +0300, Sasha Levin wrote:
> The MAC of a virtio-net device is located at the first field of the device
> specific header. This header is located at offset 20 if the device doesn't
> support MSI-X or offset 24 if it does.
Erk. This means, in general, we have to do vir
On 08/12/2011 06:24 AM, Anthony Liguori wrote:
On 08/08/2011 06:37 AM, Avi Kivity wrote:
+static void spawn_thread_bh_fn(void *opaque)
+{
+mutex_lock(&lock);
+do_spawn_thread();
+mutex_unlock(&lock);
+}
The locking here is odd. Why not call do_spawn_thread() without the
lock, an
On 08/12/2011 06:48 AM, Anthony Liguori wrote:
target_phys_addr_t offset_in_region;
AddrRange addr;
uint8_t dirty_log_mask;
+bool readable;
@@ -125,6 +125,7 @@ struct FlatRange {
In a follow up, it might be good to add a comment explaining that this
whole readable thing i
Hi,
I pulled latest git yesterday and noticed that graphics card pass
through does not work anymore. The VM hangs (probably when initializing
the gfx card) when passing a graphics card to the VM.
I started to do a git bisect but device assignment does not work at all
when doing it.
I starte
The MAC of a virtio-net device is located at the first field of the device
specific header. This header is located at offset 20 if the device doesn't
support MSI-X or offset 24 if it does.
Current code in virtnet_probe() used to probe the MAC before checking for
MSI-X, which means that the read wa
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