Displaying 5 results from an estimated 5 matches for "7a7fc00".
2019 Mar 06
0
[RFC PATCH V2 5/5] vhost: access vq metadata through kernel virtual address
...>handle_kick)
r = vhost_poll_start(&vq->poll, vq->kick);
+ if (d->mm)
+ mmu_notifier_register(&d->mmu_notifier, d->mm);
mutex_unlock(&vq->mutex);
if (pollstop && vq->handle_kick)
diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
index 7a7fc00..146076e 100644
--- a/drivers/vhost/vhost.h
+++ b/drivers/vhost/vhost.h
@@ -12,6 +12,8 @@
#include <linux/virtio_config.h>
#include <linux/virtio_ring.h>
#include <linux/atomic.h>
+#include <linux/pagemap.h>
+#include <linux/mmu_notifier.h>
struct vhost_work;
ty...
2019 Mar 06
12
[RFC PATCH V2 0/5] vhost: accelerate metadata access through vmap()
This series tries to access virtqueue metadata through kernel virtual
address instead of copy_user() friends since they had too much
overheads like checks, spec barriers or even hardware feature
toggling. This is done through setup kernel address through vmap() and
resigter MMU notifier for invalidation.
Test shows about 24% improvement on TX PPS. TCP_STREAM doesn't see
obvious improvement.
2019 Mar 06
12
[RFC PATCH V2 0/5] vhost: accelerate metadata access through vmap()
This series tries to access virtqueue metadata through kernel virtual
address instead of copy_user() friends since they had too much
overheads like checks, spec barriers or even hardware feature
toggling. This is done through setup kernel address through vmap() and
resigter MMU notifier for invalidation.
Test shows about 24% improvement on TX PPS. TCP_STREAM doesn't see
obvious improvement.
2019 Mar 06
2
[RFC PATCH V2 5/5] vhost: access vq metadata through kernel virtual address
...(&vq->poll, vq->kick);
>
> + if (d->mm)
> + mmu_notifier_register(&d->mmu_notifier, d->mm);
> mutex_unlock(&vq->mutex);
>
> if (pollstop && vq->handle_kick)
> diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
> index 7a7fc00..146076e 100644
> --- a/drivers/vhost/vhost.h
> +++ b/drivers/vhost/vhost.h
> @@ -12,6 +12,8 @@
> #include <linux/virtio_config.h>
> #include <linux/virtio_ring.h>
> #include <linux/atomic.h>
> +#include <linux/pagemap.h>
> +#include <linux/mmu_...
2019 Mar 06
2
[RFC PATCH V2 5/5] vhost: access vq metadata through kernel virtual address
...(&vq->poll, vq->kick);
>
> + if (d->mm)
> + mmu_notifier_register(&d->mmu_notifier, d->mm);
> mutex_unlock(&vq->mutex);
>
> if (pollstop && vq->handle_kick)
> diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
> index 7a7fc00..146076e 100644
> --- a/drivers/vhost/vhost.h
> +++ b/drivers/vhost/vhost.h
> @@ -12,6 +12,8 @@
> #include <linux/virtio_config.h>
> #include <linux/virtio_ring.h>
> #include <linux/atomic.h>
> +#include <linux/pagemap.h>
> +#include <linux/mmu_...