search for: ustart

...ct vhost_vmap *map) > +{ > + if (map->addr) > + vunmap(map->unmap_addr); > + > + map->addr = NULL; > + map->unmap_addr = NULL; > +} > + > +static int vhost_invalidate_vmap(struct vhost_virtqueue *vq, > + struct vhost_vmap *map, > + unsigned long ustart, > + size_t size, > + unsigned long start, > + unsigned long end, > + bool blockable) > +{ > + if (end < ustart || start > ustart - 1 + size) > + return 0; > + > + if (!blockable) > + return -EAGAIN; > + > + mutex_lock(&vq->mutex);...

...t;desc) * num; } +static void vhost_uninit_vmap(struct vhost_vmap *map) +{ + if (map->addr) + vunmap(map->unmap_addr); + + map->addr = NULL; + map->unmap_addr = NULL; +} + +static int vhost_invalidate_vmap(struct vhost_virtqueue *vq, + struct vhost_vmap *map, + unsigned long ustart, + size_t size, + unsigned long start, + unsigned long end, + bool blockable) +{ + if (end < ustart || start > ustart - 1 + size) + return 0; + + if (!blockable) + return -EAGAIN; + + mutex_lock(&vq->mutex); + vhost_uninit_vmap(map); + mutex_unlock(&vq->mutex);...

...positiv definit Fehler in Sample(data = data, group = group, sample.cov = sample.cov, sample.mean = sample.mean,  : sample covariance can not be inverted" Then I tried to "lavaanify" my model specification first cfa.model<- lavaanify(cfa.model)    id lhs op rhs user group free ustart fixed.x   label eq.id free.uncon 1   1  f1 =~  x1    1     1    1     NA       0  f1=~x1     0          1 2   2  f1 =~  x2    1     1    2     NA       0  f1=~x2     0          2 3   3  f1 =~  x3    1     1    3     NA       0  f1=~x3     0          3 4   4  f1 =~  x4    1     1    4     NA       0...

...(map->addr) { + vunmap(map->unmap_addr); + kfree(map->pages); + map->pages = NULL; + map->npages = 0; + } + + map->addr = NULL; + map->unmap_addr = NULL; +} + +static void vhost_invalidate_vmap(struct vhost_virtqueue *vq, + struct vhost_vmap *map, + unsigned long ustart, + size_t size, + unsigned long start, + unsigned long end) +{ + if (end < ustart || start > ustart - 1 + size) + return; + + dump_stack(); + mutex_lock(&vq->mutex); + vhost_uninit_vmap(map); + mutex_unlock(&vq->mutex); +} + + +static void vhost_invalidate(struct...

...ee(map->pages); > + map->pages = NULL; > + map->npages = 0; > + } > + > + map->addr = NULL; > + map->unmap_addr = NULL; > +} > + > +static void vhost_invalidate_vmap(struct vhost_virtqueue *vq, > + struct vhost_vmap *map, > + unsigned long ustart, > + size_t size, > + unsigned long start, > + unsigned long end) > +{ > + if (end < ustart || start > ustart - 1 + size) > + return; > + > + dump_stack(); > + mutex_lock(&vq->mutex); > + vhost_uninit_vmap(map); > + mutex_unlock(&vq-...

...ee(map->pages); > + map->pages = NULL; > + map->npages = 0; > + } > + > + map->addr = NULL; > + map->unmap_addr = NULL; > +} > + > +static void vhost_invalidate_vmap(struct vhost_virtqueue *vq, > + struct vhost_vmap *map, > + unsigned long ustart, > + size_t size, > + unsigned long start, > + unsigned long end) > +{ > + if (end < ustart || start > ustart - 1 + size) > + return; > + > + dump_stack(); > + mutex_lock(&vq->mutex); > + vhost_uninit_vmap(map); > + mutex_unlock(&vq-...

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. Test shows about 24% improvement on TX PPS. It should benefit other cases as well. Changes from V2: - fix buggy range overlapping check - tear down MMU notifier during vhost ioctl to make sure

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. Test shows about 24% improvement on TX PPS. It should benefit other cases as well. Changes from V2: - fix buggy range overlapping check - tear down MMU notifier during vhost ioctl to make sure

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.

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.

So far the DRM GPUVA manager offers common infrastructure to track GPU VA allocations and mappings, generically connect GPU VA mappings to their backing buffers and perform more complex mapping operations on the GPU VA space. However, there are more design patterns commonly used by drivers, which can potentially be generalized in order to make the DRM GPUVA manager represent a basic GPU-VM