mirror of https://gitlab.com/qemu-project/qemu
c471ad0e9b
This patches implements Device IOTLB support for vhost kernel. This is done through: 1) switch to use dma helpers when map/unmap vrings from vhost codes 2) introduce a set of VhostOps to: - setting up device IOTLB request callback - processing device IOTLB request - processing device IOTLB invalidation 2) kernel support for Device IOTLB API: - allow vhost-net to query the IOMMU IOTLB entry through eventfd - enable the ability for qemu to update a specified mapping of vhost - through ioctl. - enable the ability to invalidate a specified range of iova for the device IOTLB of vhost through ioctl. In x86/intel_iommu case this is triggered through iommu memory region notifier from device IOTLB invalidation descriptor processing routine. With all the above, kernel vhost_net can co-operate with userspace IOMMU. For vhost-user, the support could be easily done on top by implementing the VhostOps. Cc: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> |
||
|---|---|---|
| .. | ||
| acpi | ||
| adc | ||
| arm | ||
| audio | ||
| block | ||
| char | ||
| core | ||
| cpu | ||
| cris | ||
| display | ||
| dma | ||
| gpio | ||
| i2c | ||
| i386 | ||
| ide | ||
| input | ||
| intc | ||
| ipack | ||
| ipmi | ||
| isa | ||
| kvm | ||
| lm32 | ||
| m68k | ||
| mem | ||
| mips | ||
| misc | ||
| net | ||
| nvram | ||
| pci | ||
| pci-host | ||
| ppc | ||
| s390x | ||
| scsi | ||
| sd | ||
| sh4 | ||
| smbios | ||
| sparc | ||
| ssi | ||
| timer | ||
| tricore | ||
| unicore32 | ||
| usb | ||
| vfio | ||
| virtio | ||
| watchdog | ||
| xen | ||
| boards.h | ||
| bt.h | ||
| compat.h | ||
| devices.h | ||
| elf_ops.h | ||
| empty_slot.h | ||
| fw-path-provider.h | ||
| hotplug.h | ||
| hw.h | ||
| ide.h | ||
| irq.h | ||
| loader.h | ||
| nmi.h | ||
| or-irq.h | ||
| pcmcia.h | ||
| platform-bus.h | ||
| ptimer.h | ||
| qdev-core.h | ||
| qdev-dma.h | ||
| qdev-properties.h | ||
| qdev.h | ||
| register.h | ||
| stream.h | ||
| sysbus.h | ||
| usb.h | ||