search for: bottom_sg

...ully added to the queue. >> + */ >> +static int __viommu_add_req(struct viommu_dev *viommu, void *buf, size_t len, >> + bool writeback) >> +{ >> + int ret; >> + off_t write_offset; >> + struct viommu_request *req; >> + struct scatterlist top_sg, bottom_sg; >> + struct scatterlist *sg[2] = { &top_sg, &bottom_sg }; >> + struct virtqueue *vq = viommu->vqs[VIOMMU_REQUEST_VQ]; >> + >> + assert_spin_locked(&viommu->request_lock); >> + >> + write_offset = viommu_get_req_offset(viommu, buf, len); >&gt...

...rn 0 if the request was successfully added to the queue. > + */ > +static int __viommu_add_req(struct viommu_dev *viommu, void *buf, size_t len, > + bool writeback) > +{ > + int ret; > + off_t write_offset; > + struct viommu_request *req; > + struct scatterlist top_sg, bottom_sg; > + struct scatterlist *sg[2] = { &top_sg, &bottom_sg }; > + struct virtqueue *vq = viommu->vqs[VIOMMU_REQUEST_VQ]; > + > + assert_spin_locked(&viommu->request_lock); > + > + write_offset = viommu_get_req_offset(viommu, buf, len); > + if (!write_offset) could...

...rn 0 if the request was successfully added to the queue. > + */ > +static int __viommu_add_req(struct viommu_dev *viommu, void *buf, size_t len, > + bool writeback) > +{ > + int ret; > + off_t write_offset; > + struct viommu_request *req; > + struct scatterlist top_sg, bottom_sg; > + struct scatterlist *sg[2] = { &top_sg, &bottom_sg }; > + struct virtqueue *vq = viommu->vqs[VIOMMU_REQUEST_VQ]; > + > + assert_spin_locked(&viommu->request_lock); > + > + write_offset = viommu_get_req_offset(viommu, buf, len); > + if (!write_offset) could...

...rn 0 if the request was successfully added to the queue. > + */ > +static int __viommu_add_req(struct viommu_dev *viommu, void *buf, size_t len, > + bool writeback) > +{ > + int ret; > + off_t write_offset; > + struct viommu_request *req; > + struct scatterlist top_sg, bottom_sg; > + struct scatterlist *sg[2] = { &top_sg, &bottom_sg }; > + struct virtqueue *vq = viommu->vqs[VIOMMU_REQUEST_VQ]; > + > + assert_spin_locked(&viommu->request_lock); > + > + write_offset = viommu_get_req_offset(viommu, buf, len); > + if (!write_offset) >...

...rn 0 if the request was successfully added to the queue. > + */ > +static int __viommu_add_req(struct viommu_dev *viommu, void *buf, size_t len, > + bool writeback) > +{ > + int ret; > + off_t write_offset; > + struct viommu_request *req; > + struct scatterlist top_sg, bottom_sg; > + struct scatterlist *sg[2] = { &top_sg, &bottom_sg }; > + struct virtqueue *vq = viommu->vqs[VIOMMU_REQUEST_VQ]; > + > + assert_spin_locked(&viommu->request_lock); > + > + write_offset = viommu_get_req_offset(viommu, buf, len); > + if (!write_offset) >...

...d_req() and + * sync_req(). + * + * Return 0 if the request was successfully added to the queue. + */ +static int __viommu_add_req(struct viommu_dev *viommu, void *buf, size_t len, + bool writeback) +{ + int ret; + off_t write_offset; + struct viommu_request *req; + struct scatterlist top_sg, bottom_sg; + struct scatterlist *sg[2] = { &top_sg, &bottom_sg }; + struct virtqueue *vq = viommu->vqs[VIOMMU_REQUEST_VQ]; + + assert_spin_locked(&viommu->request_lock); + + write_offset = viommu_get_write_desc_offset(viommu, buf, len); + if (write_offset <= 0) + return -EINVAL; + + req...

...d_req() and + * sync_req(). + * + * Return 0 if the request was successfully added to the queue. + */ +static int __viommu_add_req(struct viommu_dev *viommu, void *buf, size_t len, + bool writeback) +{ + int ret; + off_t write_offset; + struct viommu_request *req; + struct scatterlist top_sg, bottom_sg; + struct scatterlist *sg[2] = { &top_sg, &bottom_sg }; + struct virtqueue *vq = viommu->vqs[VIOMMU_REQUEST_VQ]; + + assert_spin_locked(&viommu->request_lock); + + write_offset = viommu_get_req_offset(viommu, buf, len); + if (!write_offset) + return -EINVAL; + + req = kzalloc(siz...

...d_req() and + * sync_req(). + * + * Return 0 if the request was successfully added to the queue. + */ +static int __viommu_add_req(struct viommu_dev *viommu, void *buf, size_t len, + bool writeback) +{ + int ret; + off_t write_offset; + struct viommu_request *req; + struct scatterlist top_sg, bottom_sg; + struct scatterlist *sg[2] = { &top_sg, &bottom_sg }; + struct virtqueue *vq = viommu->vqs[VIOMMU_REQUEST_VQ]; + + assert_spin_locked(&viommu->request_lock); + + write_offset = viommu_get_req_offset(viommu, buf, len); + if (!write_offset) + return -EINVAL; + + req = kzalloc(siz...

...d_req() and + * sync_req(). + * + * Return 0 if the request was successfully added to the queue. + */ +static int __viommu_add_req(struct viommu_dev *viommu, void *buf, size_t len, + bool writeback) +{ + int ret; + off_t write_offset; + struct viommu_request *req; + struct scatterlist top_sg, bottom_sg; + struct scatterlist *sg[2] = { &top_sg, &bottom_sg }; + struct virtqueue *vq = viommu->vqs[VIOMMU_REQUEST_VQ]; + + assert_spin_locked(&viommu->request_lock); + + write_offset = viommu_get_req_offset(viommu, buf, len); + if (!write_offset) + return -EINVAL; + + req = kzalloc(siz...

...d_req() and + * sync_req(). + * + * Return 0 if the request was successfully added to the queue. + */ +static int __viommu_add_req(struct viommu_dev *viommu, void *buf, size_t len, + bool writeback) +{ + int ret; + off_t write_offset; + struct viommu_request *req; + struct scatterlist top_sg, bottom_sg; + struct scatterlist *sg[2] = { &top_sg, &bottom_sg }; + struct virtqueue *vq = viommu->vqs[VIOMMU_REQUEST_VQ]; + + assert_spin_locked(&viommu->request_lock); + + write_offset = viommu_get_write_desc_offset(viommu, buf, len); + if (write_offset <= 0) + return -EINVAL; + + req...

...ully added to the queue. >> + */ >> +static int __viommu_add_req(struct viommu_dev *viommu, void *buf, size_t len, >> + bool writeback) >> +{ >> + int ret; >> + off_t write_offset; >> + struct viommu_request *req; >> + struct scatterlist top_sg, bottom_sg; >> + struct scatterlist *sg[2] = { &top_sg, &bottom_sg }; >> + struct virtqueue *vq = viommu->vqs[VIOMMU_REQUEST_VQ]; >> + >> + assert_spin_locked(&viommu->request_lock); >> + >> + write_offset = viommu_get_req_offset(viommu, buf, len); >&gt...

...rn 0 if the request was successfully added to the queue. > + */ > +static int __viommu_add_req(struct viommu_dev *viommu, void *buf, size_t len, > + bool writeback) > +{ > + int ret; > + off_t write_offset; > + struct viommu_request *req; > + struct scatterlist top_sg, bottom_sg; > + struct scatterlist *sg[2] = { &top_sg, &bottom_sg }; > + struct virtqueue *vq = viommu->vqs[VIOMMU_REQUEST_VQ]; > + > + assert_spin_locked(&viommu->request_lock); > + > + write_offset = viommu_get_write_desc_offset(viommu, buf, len); > + if (write_offset...

...rn 0 if the request was successfully added to the queue. > + */ > +static int __viommu_add_req(struct viommu_dev *viommu, void *buf, size_t len, > + bool writeback) > +{ > + int ret; > + off_t write_offset; > + struct viommu_request *req; > + struct scatterlist top_sg, bottom_sg; > + struct scatterlist *sg[2] = { &top_sg, &bottom_sg }; > + struct virtqueue *vq = viommu->vqs[VIOMMU_REQUEST_VQ]; > + > + assert_spin_locked(&viommu->request_lock); > + > + write_offset = viommu_get_write_desc_offset(viommu, buf, len); > + if (write_offset...

Implement the virtio-iommu driver, following specification v0.9 [1]. Since v4 [2] I fixed the issues reported by Eric, and added Reviewed-by from Eric and Rob. Thanks! I changed the specification to fix one inconsistency discussed in v4. That the device fills the probe buffer with zeroes is now a "SHOULD" instead of a "MAY", since it's the only way for the driver to know

Implement the virtio-iommu driver, following specification v0.9 [1]. Since v4 [2] I fixed the issues reported by Eric, and added Reviewed-by from Eric and Rob. Thanks! I changed the specification to fix one inconsistency discussed in v4. That the device fills the probe buffer with zeroes is now a "SHOULD" instead of a "MAY", since it's the only way for the driver to know

...rn 0 if the request was successfully added to the queue. > + */ > +static int __viommu_add_req(struct viommu_dev *viommu, void *buf, size_t len, > + bool writeback) > +{ > + int ret; > + off_t write_offset; > + struct viommu_request *req; > + struct scatterlist top_sg, bottom_sg; > + struct scatterlist *sg[2] = { &top_sg, &bottom_sg }; > + struct virtqueue *vq = viommu->vqs[VIOMMU_REQUEST_VQ]; > + > + assert_spin_locked(&viommu->request_lock); > + > + write_offset = viommu_get_write_desc_offset(viommu, buf, len); > + if (write_offset...

...rn 0 if the request was successfully added to the queue. > + */ > +static int __viommu_add_req(struct viommu_dev *viommu, void *buf, size_t len, > + bool writeback) > +{ > + int ret; > + off_t write_offset; > + struct viommu_request *req; > + struct scatterlist top_sg, bottom_sg; > + struct scatterlist *sg[2] = { &top_sg, &bottom_sg }; > + struct virtqueue *vq = viommu->vqs[VIOMMU_REQUEST_VQ]; > + > + assert_spin_locked(&viommu->request_lock); > + > + write_offset = viommu_get_write_desc_offset(viommu, buf, len); > + if (write_offset...

...rn 0 if the request was successfully added to the queue. > + */ > +static int __viommu_add_req(struct viommu_dev *viommu, void *buf, size_t len, > + bool writeback) > +{ > + int ret; > + off_t write_offset; > + struct viommu_request *req; > + struct scatterlist top_sg, bottom_sg; > + struct scatterlist *sg[2] = { &top_sg, &bottom_sg }; > + struct virtqueue *vq = viommu->vqs[VIOMMU_REQUEST_VQ]; > + > + assert_spin_locked(&viommu->request_lock); > + > + write_offset = viommu_get_req_offset(viommu, buf, len); > + if (!write_offset) >...

...rn 0 if the request was successfully added to the queue. > + */ > +static int __viommu_add_req(struct viommu_dev *viommu, void *buf, size_t len, > + bool writeback) > +{ > + int ret; > + off_t write_offset; > + struct viommu_request *req; > + struct scatterlist top_sg, bottom_sg; > + struct scatterlist *sg[2] = { &top_sg, &bottom_sg }; > + struct virtqueue *vq = viommu->vqs[VIOMMU_REQUEST_VQ]; > + > + assert_spin_locked(&viommu->request_lock); > + > + write_offset = viommu_get_write_desc_offset(viommu, buf, len); > + if (write_offset...

...rn 0 if the request was successfully added to the queue. > + */ > +static int __viommu_add_req(struct viommu_dev *viommu, void *buf, size_t len, > + bool writeback) > +{ > + int ret; > + off_t write_offset; > + struct viommu_request *req; > + struct scatterlist top_sg, bottom_sg; > + struct scatterlist *sg[2] = { &top_sg, &bottom_sg }; > + struct virtqueue *vq = viommu->vqs[VIOMMU_REQUEST_VQ]; > + > + assert_spin_locked(&viommu->request_lock); > + > + write_offset = viommu_get_write_desc_offset(viommu, buf, len); > + if (write_offset...