search for: vdpa_rang

Displaying 6 results from an estimated 6 matches for "vdpa_rang".

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[PATCH 4/4] vhost: vdpa: report iova range
2020 Aug 05
2
[PATCH 4/4] vhost: vdpa: report iova range
...long vhost_vdpa_get_iova_range(struct vhost_vdpa *v, u32 __user *argp) > +{ > + struct iommu_domain_geometry geo; > + struct vdpa_device *vdpa = v->vdpa; > + const struct vdpa_config_ops *ops = vdpa->config; > + struct vhost_vdpa_iova_range range; > + struct vdpa_iova_range vdpa_range; > + > + if (!ops->set_map && !ops->dma_map) { Why not just check if (ops->get_iova_range) directly? > + iommu_domain_get_attr(v->domain, > + DOMAIN_ATTR_GEOMETRY, &geo); > + range.start = geo.aperture_start; > + range.end = geo.aperture_e...
[PATCH 4/4] vhost: vdpa: report iova range
2020 Aug 05
2
[PATCH 4/4] vhost: vdpa: report iova range
...long vhost_vdpa_get_iova_range(struct vhost_vdpa *v, u32 __user *argp) > +{ > + struct iommu_domain_geometry geo; > + struct vdpa_device *vdpa = v->vdpa; > + const struct vdpa_config_ops *ops = vdpa->config; > + struct vhost_vdpa_iova_range range; > + struct vdpa_iova_range vdpa_range; > + > + if (!ops->set_map && !ops->dma_map) { Why not just check if (ops->get_iova_range) directly? > + iommu_domain_get_attr(v->domain, > + DOMAIN_ATTR_GEOMETRY, &geo); > + range.start = geo.aperture_start; > + range.end = geo.aperture_e...
[PATCH 4/4] vhost: vdpa: report iova range
2020 Jun 17
0
[PATCH 4/4] vhost: vdpa: report iova range
...gp) return 0; } + +static long vhost_vdpa_get_iova_range(struct vhost_vdpa *v, u32 __user *argp) +{ + struct iommu_domain_geometry geo; + struct vdpa_device *vdpa = v->vdpa; + const struct vdpa_config_ops *ops = vdpa->config; + struct vhost_vdpa_iova_range range; + struct vdpa_iova_range vdpa_range; + + if (!ops->set_map && !ops->dma_map) { + iommu_domain_get_attr(v->domain, + DOMAIN_ATTR_GEOMETRY, &geo); + range.start = geo.aperture_start; + range.end = geo.aperture_end; + } else { + vdpa_range = ops->get_iova_range(vdpa); + range.start = vdpa_range.sta...
[PATCH 4/4] vhost: vdpa: report iova range
2020 Aug 06
0
[PATCH 4/4] vhost: vdpa: report iova range
...a_range(struct vhost_vdpa *v, u32 __user *argp) >> +{ >> + struct iommu_domain_geometry geo; >> + struct vdpa_device *vdpa = v->vdpa; >> + const struct vdpa_config_ops *ops = vdpa->config; >> + struct vhost_vdpa_iova_range range; >> + struct vdpa_iova_range vdpa_range; >> + >> + if (!ops->set_map && !ops->dma_map) { > Why not just check if (ops->get_iova_range) directly? Because set_map || dma_ops is a hint that the device has its own DMA translation logic. Device without get_iova_range does not necessarily meant it use IOMMU...
[PATCH 0/4] vDPA: API for reporting IOVA range
2020 Jun 17
12
[PATCH 0/4] vDPA: API for reporting IOVA range
Hi All: This series introduces API for reporing IOVA range. This is a must for userspace to work correclty: - for the process that uses vhost-vDPA directly to properly allocate IOVA - for VM(qemu), when vIOMMU is not enabled, fail early if GPA is out of range - for VM(qemu), when vIOMMU is enabled, determine a valid guest address width Please review. Thanks Jason Wang (4): vdpa:
[PATCH 0/4] vDPA: API for reporting IOVA range
2020 Jun 17
12
[PATCH 0/4] vDPA: API for reporting IOVA range
Hi All: This series introduces API for reporing IOVA range. This is a must for userspace to work correclty: - for the process that uses vhost-vDPA directly to properly allocate IOVA - for VM(qemu), when vIOMMU is not enabled, fail early if GPA is out of range - for VM(qemu), when vIOMMU is enabled, determine a valid guest address width Please review. Thanks Jason Wang (4): vdpa: