search for: vhost_set_iotlb_request_entry

...ementation of iommu for a secure DMA environment in guest. The idea is simple. When vhost meets an IOTLB miss, it will request the assistance of userspace to do the translation, this is done through: - Fill the translation request in a preset userspace address (This address is set through ioctl VHOST_SET_IOTLB_REQUEST_ENTRY). - Notify userspace through eventfd (This eventfd was set through ioctl VHOST_SET_IOTLB_FD). When userspace finishes the translation, it will update the vhost IOTLB through VHOST_UPDATE_IOTLB ioctl. Userspace is also in charge of snooping the IOTLB invalidation of IOMMU IOTLB and use VHOST_UPDA...

...ementation of iommu for a secure DMA environment in guest. The idea is simple. When vhost meets an IOTLB miss, it will request the assistance of userspace to do the translation, this is done through: - Fill the translation request in a preset userspace address (This address is set through ioctl VHOST_SET_IOTLB_REQUEST_ENTRY). - Notify userspace through eventfd (This eventfd was set through ioctl VHOST_SET_IOTLB_FD). When userspace finishes the translation, it will update the vhost IOTLB through VHOST_UPDATE_IOTLB ioctl. Userspace is also in charge of snooping the IOTLB invalidation of IOMMU IOTLB and use VHOST_UPDA...

...MA environment in guest. > > The idea is simple. When vhost meets an IOTLB miss, it will request > the assistance of userspace to do the translation, this is done > through: > > - Fill the translation request in a preset userspace address (This > address is set through ioctl VHOST_SET_IOTLB_REQUEST_ENTRY). > - Notify userspace through eventfd (This eventfd was set through ioctl > VHOST_SET_IOTLB_FD). > > When userspace finishes the translation, it will update the vhost > IOTLB through VHOST_UPDATE_IOTLB ioctl. Userspace is also in charge of > snooping the IOTLB invalidation of...

...A environment in guest. > > The idea is simple. When vhost meets an IOTLB miss, it will request > the assistance of userspace to do the translation, this is done > through: > > - Fill the translation request in a preset userspace address (This > address is set through ioctl VHOST_SET_IOTLB_REQUEST_ENTRY). > - Notify userspace through eventfd (This eventfd was set through ioctl > VHOST_SET_IOTLB_FD). > > When userspace finishes the translation, it will update the vhost > IOTLB through VHOST_UPDATE_IOTLB ioctl. Userspace is also in charge of > snooping the IOTLB invalidation of...

...ea is simple. When vhost meets an IOTLB miss, it will request >>> the assistance of userspace to do the translation, this is done >>> through: >>> >>> - Fill the translation request in a preset userspace address (This >>> address is set through ioctl VHOST_SET_IOTLB_REQUEST_ENTRY). >>> - Notify userspace through eventfd (This eventfd was set through ioctl >>> VHOST_SET_IOTLB_FD). >>> >>> When userspace finishes the translation, it will update the vhost >>> IOTLB through VHOST_UPDATE_IOTLB ioctl. Userspace is also in charge of...

...ea is simple. When vhost meets an IOTLB miss, it will request >>> the assistance of userspace to do the translation, this is done >>> through: >>> >>> - Fill the translation request in a preset userspace address (This >>> address is set through ioctl VHOST_SET_IOTLB_REQUEST_ENTRY). >>> - Notify userspace through eventfd (This eventfd was set through ioctl >>> VHOST_SET_IOTLB_FD). >>> >>> When userspace finishes the translation, it will update the vhost >>> IOTLB through VHOST_UPDATE_IOTLB ioctl. Userspace is also in charge of...

...is simple. When vhost meets an IOTLB miss, it will request > >> the assistance of userspace to do the translation, this is done > >> through: > >> > >> - Fill the translation request in a preset userspace address (This > >> address is set through ioctl VHOST_SET_IOTLB_REQUEST_ENTRY). > >> - Notify userspace through eventfd (This eventfd was set through ioctl > >> VHOST_SET_IOTLB_FD). > > Why use an eventfd for this? > > The aim is to implement the API all through ioctls. > > > We use them for interrupts because > > that happen...

...is simple. When vhost meets an IOTLB miss, it will request > >> the assistance of userspace to do the translation, this is done > >> through: > >> > >> - Fill the translation request in a preset userspace address (This > >> address is set through ioctl VHOST_SET_IOTLB_REQUEST_ENTRY). > >> - Notify userspace through eventfd (This eventfd was set through ioctl > >> VHOST_SET_IOTLB_FD). > > Why use an eventfd for this? > > The aim is to implement the API all through ioctls. > > > We use them for interrupts because > > that happen...

...;> >> The idea is simple. When vhost meets an IOTLB miss, it will request >> the assistance of userspace to do the translation, this is done >> through: >> >> - Fill the translation request in a preset userspace address (This >> address is set through ioctl VHOST_SET_IOTLB_REQUEST_ENTRY). >> - Notify userspace through eventfd (This eventfd was set through ioctl >> VHOST_SET_IOTLB_FD). >> >> When userspace finishes the translation, it will update the vhost >> IOTLB through VHOST_UPDATE_IOTLB ioctl. Userspace is also in charge of >> snooping th...

...t;> >> The idea is simple. When vhost meets an IOTLB miss, it will request >> the assistance of userspace to do the translation, this is done >> through: >> >> - Fill the translation request in a preset userspace address (This >> address is set through ioctl VHOST_SET_IOTLB_REQUEST_ENTRY). >> - Notify userspace through eventfd (This eventfd was set through ioctl >> VHOST_SET_IOTLB_FD). > Why use an eventfd for this? The aim is to implement the API all through ioctls. > We use them for interrupts because > that happens to be what kvm wants, but here - why d...

...of DMA > remapping. > > The idea is simple. When vhost meets an IOTLB miss, it will request > the assistance of userspace to do the translation, this is done > through: > > - Fill the translation request in a preset userspace address (This > address is set through ioctl VHOST_SET_IOTLB_REQUEST_ENTRY). > - Notify userspace through eventfd (This eventfd was set through ioctl > VHOST_SET_IOTLB_FD). Why use an eventfd for this? We use them for interrupts because that happens to be what kvm wants, but here - why don't we just add a generic support for reading out events on the vhost fd...

...of DMA > remapping. > > The idea is simple. When vhost meets an IOTLB miss, it will request > the assistance of userspace to do the translation, this is done > through: > > - Fill the translation request in a preset userspace address (This > address is set through ioctl VHOST_SET_IOTLB_REQUEST_ENTRY). > - Notify userspace through eventfd (This eventfd was set through ioctl > VHOST_SET_IOTLB_FD). Why use an eventfd for this? We use them for interrupts because that happens to be what kvm wants, but here - why don't we just add a generic support for reading out events on the vhost fd...

...vhost meets an IOTLB miss, it will request >>>> the assistance of userspace to do the translation, this is done >>>> through: >>>> >>>> - Fill the translation request in a preset userspace address (This >>>> address is set through ioctl VHOST_SET_IOTLB_REQUEST_ENTRY). >>>> - Notify userspace through eventfd (This eventfd was set through ioctl >>>> VHOST_SET_IOTLB_FD). >>> Why use an eventfd for this? >> The aim is to implement the API all through ioctls. >> >>> We use them for interrupts because >>...

...ion of iommu for a secure DMA environment (DMAR) in guest. The idea is simple. When vhost meets an IOTLB miss, it will request the assistance of userspace to do the translation, this is done through: - Fill the translation request in a preset userspace address (This address is set through ioctl VHOST_SET_IOTLB_REQUEST_ENTRY). - Notify userspace through eventfd (This eventfd was set through ioctl VHOST_SET_IOTLB_FD). When userspace finishes the translation, it will update the vhost IOTLB through VHOST_UPDATE_IOTLB ioctl. Userspace is also in charge of snooping the IOTLB invalidation of IOMMU IOTLB and use VHOST_UPDA...

...ion of iommu for a secure DMA environment (DMAR) in guest. The idea is simple. When vhost meets an IOTLB miss, it will request the assistance of userspace to do the translation, this is done through: - Fill the translation request in a preset userspace address (This address is set through ioctl VHOST_SET_IOTLB_REQUEST_ENTRY). - Notify userspace through eventfd (This eventfd was set through ioctl VHOST_SET_IOTLB_FD). When userspace finishes the translation, it will update the vhost IOTLB through VHOST_UPDATE_IOTLB ioctl. Userspace is also in charge of snooping the IOTLB invalidation of IOMMU IOTLB and use VHOST_UPDA...

...tion with userspace(qemu) implementation of DMA remapping. The idea is simple. When vhost meets an IOTLB miss, it will request the assistance of userspace to do the translation, this is done through: - Fill the translation request in a preset userspace address (This address is set through ioctl VHOST_SET_IOTLB_REQUEST_ENTRY). - Notify userspace through eventfd (This eventfd was set through ioctl VHOST_SET_IOTLB_FD). - device IOTLB were started and stopped through VHOST_RUN_IOTLB ioctl When userspace finishes the translation, it will update the vhost IOTLB through VHOST_UPDATE_IOTLB ioctl. Userspace is also in charg...