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e6db5df7e2
With the introduction of the batch hinting, meaningless batches can be created with no IOTLB updates if the memory region was skipped by vhost_vdpa_listener_skipped_section. This is the case of host notifiers memory regions, device un/realize, and others. This causes the vdpa device to receive dma mapping settings with no changes, a possibly expensive operation for nothing. To avoid that, VHOST_IOTLB_BATCH_BEGIN hint is delayed until we have a meaningful (not skipped section) mapping or unmapping operation, and VHOST_IOTLB_BATCH_END is not written unless at least one of _UPDATE / _INVALIDATE has been issued. v3: * Use a bool instead of a counter avoiding potential number wrapping * Fix bad check on _commit * Move VHOST_BACKEND_F_IOTLB_BATCH check to vhost_vdpa_iotlb_batch_begin_once v2 (from RFC): * Rename misleading name * Abstract start batching function for listener_add/del Signed-off-by: Eugenio Pérez <eperezma@redhat.com> Message-Id: <20210812140933.226288-1-eperezma@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
703 lines
21 KiB
C
703 lines
21 KiB
C
/*
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* vhost-vdpa
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*
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* Copyright(c) 2017-2018 Intel Corporation.
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* Copyright(c) 2020 Red Hat, Inc.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#include "qemu/osdep.h"
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#include <linux/vhost.h>
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#include <linux/vfio.h>
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#include <sys/eventfd.h>
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#include <sys/ioctl.h>
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#include "hw/virtio/vhost.h"
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#include "hw/virtio/vhost-backend.h"
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#include "hw/virtio/virtio-net.h"
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#include "hw/virtio/vhost-vdpa.h"
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#include "exec/address-spaces.h"
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#include "qemu/main-loop.h"
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#include "cpu.h"
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#include "trace.h"
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#include "qemu-common.h"
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static bool vhost_vdpa_listener_skipped_section(MemoryRegionSection *section)
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{
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return (!memory_region_is_ram(section->mr) &&
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!memory_region_is_iommu(section->mr)) ||
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/* vhost-vDPA doesn't allow MMIO to be mapped */
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memory_region_is_ram_device(section->mr) ||
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/*
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* Sizing an enabled 64-bit BAR can cause spurious mappings to
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* addresses in the upper part of the 64-bit address space. These
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* are never accessed by the CPU and beyond the address width of
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* some IOMMU hardware. TODO: VDPA should tell us the IOMMU width.
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*/
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section->offset_within_address_space & (1ULL << 63);
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}
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static int vhost_vdpa_dma_map(struct vhost_vdpa *v, hwaddr iova, hwaddr size,
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void *vaddr, bool readonly)
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{
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struct vhost_msg_v2 msg = {};
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int fd = v->device_fd;
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int ret = 0;
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msg.type = v->msg_type;
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msg.iotlb.iova = iova;
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msg.iotlb.size = size;
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msg.iotlb.uaddr = (uint64_t)(uintptr_t)vaddr;
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msg.iotlb.perm = readonly ? VHOST_ACCESS_RO : VHOST_ACCESS_RW;
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msg.iotlb.type = VHOST_IOTLB_UPDATE;
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trace_vhost_vdpa_dma_map(v, fd, msg.type, msg.iotlb.iova, msg.iotlb.size,
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msg.iotlb.uaddr, msg.iotlb.perm, msg.iotlb.type);
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if (write(fd, &msg, sizeof(msg)) != sizeof(msg)) {
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error_report("failed to write, fd=%d, errno=%d (%s)",
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fd, errno, strerror(errno));
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return -EIO ;
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}
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return ret;
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}
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static int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, hwaddr iova,
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hwaddr size)
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{
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struct vhost_msg_v2 msg = {};
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int fd = v->device_fd;
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int ret = 0;
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msg.type = v->msg_type;
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msg.iotlb.iova = iova;
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msg.iotlb.size = size;
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msg.iotlb.type = VHOST_IOTLB_INVALIDATE;
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trace_vhost_vdpa_dma_unmap(v, fd, msg.type, msg.iotlb.iova,
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msg.iotlb.size, msg.iotlb.type);
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if (write(fd, &msg, sizeof(msg)) != sizeof(msg)) {
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error_report("failed to write, fd=%d, errno=%d (%s)",
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fd, errno, strerror(errno));
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return -EIO ;
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}
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return ret;
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}
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static void vhost_vdpa_listener_begin_batch(struct vhost_vdpa *v)
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{
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int fd = v->device_fd;
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struct vhost_msg_v2 msg = {
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.type = v->msg_type,
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.iotlb.type = VHOST_IOTLB_BATCH_BEGIN,
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};
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if (write(fd, &msg, sizeof(msg)) != sizeof(msg)) {
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error_report("failed to write, fd=%d, errno=%d (%s)",
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fd, errno, strerror(errno));
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}
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}
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static void vhost_vdpa_iotlb_batch_begin_once(struct vhost_vdpa *v)
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{
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if (v->dev->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH) &&
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!v->iotlb_batch_begin_sent) {
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vhost_vdpa_listener_begin_batch(v);
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}
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v->iotlb_batch_begin_sent = true;
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}
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static void vhost_vdpa_listener_commit(MemoryListener *listener)
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{
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struct vhost_vdpa *v = container_of(listener, struct vhost_vdpa, listener);
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struct vhost_dev *dev = v->dev;
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struct vhost_msg_v2 msg = {};
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int fd = v->device_fd;
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if (!(dev->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH))) {
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return;
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}
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if (!v->iotlb_batch_begin_sent) {
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return;
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}
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msg.type = v->msg_type;
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msg.iotlb.type = VHOST_IOTLB_BATCH_END;
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if (write(fd, &msg, sizeof(msg)) != sizeof(msg)) {
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error_report("failed to write, fd=%d, errno=%d (%s)",
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fd, errno, strerror(errno));
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}
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v->iotlb_batch_begin_sent = false;
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}
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static void vhost_vdpa_listener_region_add(MemoryListener *listener,
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MemoryRegionSection *section)
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{
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struct vhost_vdpa *v = container_of(listener, struct vhost_vdpa, listener);
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hwaddr iova;
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Int128 llend, llsize;
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void *vaddr;
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int ret;
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if (vhost_vdpa_listener_skipped_section(section)) {
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return;
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}
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if (unlikely((section->offset_within_address_space & ~TARGET_PAGE_MASK) !=
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(section->offset_within_region & ~TARGET_PAGE_MASK))) {
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error_report("%s received unaligned region", __func__);
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return;
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}
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iova = TARGET_PAGE_ALIGN(section->offset_within_address_space);
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llend = int128_make64(section->offset_within_address_space);
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llend = int128_add(llend, section->size);
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llend = int128_and(llend, int128_exts64(TARGET_PAGE_MASK));
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if (int128_ge(int128_make64(iova), llend)) {
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return;
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}
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memory_region_ref(section->mr);
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/* Here we assume that memory_region_is_ram(section->mr)==true */
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vaddr = memory_region_get_ram_ptr(section->mr) +
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section->offset_within_region +
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(iova - section->offset_within_address_space);
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trace_vhost_vdpa_listener_region_add(v, iova, int128_get64(llend),
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vaddr, section->readonly);
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llsize = int128_sub(llend, int128_make64(iova));
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vhost_vdpa_iotlb_batch_begin_once(v);
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ret = vhost_vdpa_dma_map(v, iova, int128_get64(llsize),
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vaddr, section->readonly);
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if (ret) {
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error_report("vhost vdpa map fail!");
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goto fail;
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}
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return;
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fail:
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/*
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* On the initfn path, store the first error in the container so we
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* can gracefully fail. Runtime, there's not much we can do other
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* than throw a hardware error.
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*/
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error_report("vhost-vdpa: DMA mapping failed, unable to continue");
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return;
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}
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static void vhost_vdpa_listener_region_del(MemoryListener *listener,
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MemoryRegionSection *section)
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{
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struct vhost_vdpa *v = container_of(listener, struct vhost_vdpa, listener);
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hwaddr iova;
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Int128 llend, llsize;
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int ret;
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if (vhost_vdpa_listener_skipped_section(section)) {
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return;
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}
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if (unlikely((section->offset_within_address_space & ~TARGET_PAGE_MASK) !=
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(section->offset_within_region & ~TARGET_PAGE_MASK))) {
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error_report("%s received unaligned region", __func__);
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return;
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}
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iova = TARGET_PAGE_ALIGN(section->offset_within_address_space);
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llend = int128_make64(section->offset_within_address_space);
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llend = int128_add(llend, section->size);
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llend = int128_and(llend, int128_exts64(TARGET_PAGE_MASK));
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trace_vhost_vdpa_listener_region_del(v, iova, int128_get64(llend));
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if (int128_ge(int128_make64(iova), llend)) {
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return;
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}
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llsize = int128_sub(llend, int128_make64(iova));
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vhost_vdpa_iotlb_batch_begin_once(v);
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ret = vhost_vdpa_dma_unmap(v, iova, int128_get64(llsize));
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if (ret) {
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error_report("vhost_vdpa dma unmap error!");
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}
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memory_region_unref(section->mr);
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}
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/*
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* IOTLB API is used by vhost-vpda which requires incremental updating
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* of the mapping. So we can not use generic vhost memory listener which
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* depends on the addnop().
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*/
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static const MemoryListener vhost_vdpa_memory_listener = {
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.commit = vhost_vdpa_listener_commit,
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.region_add = vhost_vdpa_listener_region_add,
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.region_del = vhost_vdpa_listener_region_del,
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};
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static int vhost_vdpa_call(struct vhost_dev *dev, unsigned long int request,
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void *arg)
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{
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struct vhost_vdpa *v = dev->opaque;
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int fd = v->device_fd;
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int ret;
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assert(dev->vhost_ops->backend_type == VHOST_BACKEND_TYPE_VDPA);
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ret = ioctl(fd, request, arg);
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return ret < 0 ? -errno : ret;
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}
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static void vhost_vdpa_add_status(struct vhost_dev *dev, uint8_t status)
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{
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uint8_t s;
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trace_vhost_vdpa_add_status(dev, status);
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if (vhost_vdpa_call(dev, VHOST_VDPA_GET_STATUS, &s)) {
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return;
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}
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s |= status;
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vhost_vdpa_call(dev, VHOST_VDPA_SET_STATUS, &s);
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}
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static int vhost_vdpa_init(struct vhost_dev *dev, void *opaque, Error **errp)
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{
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struct vhost_vdpa *v;
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assert(dev->vhost_ops->backend_type == VHOST_BACKEND_TYPE_VDPA);
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trace_vhost_vdpa_init(dev, opaque);
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v = opaque;
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v->dev = dev;
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dev->opaque = opaque ;
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v->listener = vhost_vdpa_memory_listener;
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v->msg_type = VHOST_IOTLB_MSG_V2;
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vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_ACKNOWLEDGE |
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VIRTIO_CONFIG_S_DRIVER);
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return 0;
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}
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static void vhost_vdpa_host_notifier_uninit(struct vhost_dev *dev,
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int queue_index)
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{
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size_t page_size = qemu_real_host_page_size;
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struct vhost_vdpa *v = dev->opaque;
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VirtIODevice *vdev = dev->vdev;
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VhostVDPAHostNotifier *n;
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n = &v->notifier[queue_index];
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if (n->addr) {
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virtio_queue_set_host_notifier_mr(vdev, queue_index, &n->mr, false);
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object_unparent(OBJECT(&n->mr));
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munmap(n->addr, page_size);
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n->addr = NULL;
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}
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}
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static void vhost_vdpa_host_notifiers_uninit(struct vhost_dev *dev, int n)
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{
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int i;
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for (i = 0; i < n; i++) {
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vhost_vdpa_host_notifier_uninit(dev, i);
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}
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}
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static int vhost_vdpa_host_notifier_init(struct vhost_dev *dev, int queue_index)
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{
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size_t page_size = qemu_real_host_page_size;
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struct vhost_vdpa *v = dev->opaque;
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VirtIODevice *vdev = dev->vdev;
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VhostVDPAHostNotifier *n;
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int fd = v->device_fd;
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void *addr;
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char *name;
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vhost_vdpa_host_notifier_uninit(dev, queue_index);
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n = &v->notifier[queue_index];
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addr = mmap(NULL, page_size, PROT_WRITE, MAP_SHARED, fd,
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queue_index * page_size);
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if (addr == MAP_FAILED) {
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goto err;
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}
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name = g_strdup_printf("vhost-vdpa/host-notifier@%p mmaps[%d]",
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v, queue_index);
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memory_region_init_ram_device_ptr(&n->mr, OBJECT(vdev), name,
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page_size, addr);
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g_free(name);
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if (virtio_queue_set_host_notifier_mr(vdev, queue_index, &n->mr, true)) {
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munmap(addr, page_size);
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goto err;
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}
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n->addr = addr;
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return 0;
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err:
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return -1;
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}
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static void vhost_vdpa_host_notifiers_init(struct vhost_dev *dev)
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{
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int i;
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for (i = dev->vq_index; i < dev->vq_index + dev->nvqs; i++) {
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if (vhost_vdpa_host_notifier_init(dev, i)) {
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goto err;
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}
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}
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return;
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err:
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vhost_vdpa_host_notifiers_uninit(dev, i);
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return;
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}
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static int vhost_vdpa_cleanup(struct vhost_dev *dev)
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{
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struct vhost_vdpa *v;
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assert(dev->vhost_ops->backend_type == VHOST_BACKEND_TYPE_VDPA);
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v = dev->opaque;
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trace_vhost_vdpa_cleanup(dev, v);
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vhost_vdpa_host_notifiers_uninit(dev, dev->nvqs);
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memory_listener_unregister(&v->listener);
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dev->opaque = NULL;
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return 0;
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}
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static int vhost_vdpa_memslots_limit(struct vhost_dev *dev)
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{
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trace_vhost_vdpa_memslots_limit(dev, INT_MAX);
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return INT_MAX;
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}
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static int vhost_vdpa_set_mem_table(struct vhost_dev *dev,
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struct vhost_memory *mem)
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{
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trace_vhost_vdpa_set_mem_table(dev, mem->nregions, mem->padding);
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if (trace_event_get_state_backends(TRACE_VHOST_VDPA_SET_MEM_TABLE) &&
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trace_event_get_state_backends(TRACE_VHOST_VDPA_DUMP_REGIONS)) {
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int i;
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for (i = 0; i < mem->nregions; i++) {
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trace_vhost_vdpa_dump_regions(dev, i,
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mem->regions[i].guest_phys_addr,
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mem->regions[i].memory_size,
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mem->regions[i].userspace_addr,
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mem->regions[i].flags_padding);
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}
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}
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if (mem->padding) {
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return -1;
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}
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return 0;
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}
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static int vhost_vdpa_set_features(struct vhost_dev *dev,
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uint64_t features)
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{
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int ret;
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trace_vhost_vdpa_set_features(dev, features);
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ret = vhost_vdpa_call(dev, VHOST_SET_FEATURES, &features);
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uint8_t status = 0;
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if (ret) {
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return ret;
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}
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vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_FEATURES_OK);
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vhost_vdpa_call(dev, VHOST_VDPA_GET_STATUS, &status);
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return !(status & VIRTIO_CONFIG_S_FEATURES_OK);
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}
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static int vhost_vdpa_set_backend_cap(struct vhost_dev *dev)
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{
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uint64_t features;
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uint64_t f = 0x1ULL << VHOST_BACKEND_F_IOTLB_MSG_V2 |
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0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH;
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int r;
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if (vhost_vdpa_call(dev, VHOST_GET_BACKEND_FEATURES, &features)) {
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return 0;
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}
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features &= f;
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r = vhost_vdpa_call(dev, VHOST_SET_BACKEND_FEATURES, &features);
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if (r) {
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return 0;
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}
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dev->backend_cap = features;
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return 0;
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}
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static int vhost_vdpa_get_device_id(struct vhost_dev *dev,
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uint32_t *device_id)
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{
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int ret;
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ret = vhost_vdpa_call(dev, VHOST_VDPA_GET_DEVICE_ID, device_id);
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trace_vhost_vdpa_get_device_id(dev, *device_id);
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return ret;
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}
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static int vhost_vdpa_reset_device(struct vhost_dev *dev)
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{
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int ret;
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uint8_t status = 0;
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ret = vhost_vdpa_call(dev, VHOST_VDPA_SET_STATUS, &status);
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trace_vhost_vdpa_reset_device(dev, status);
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return ret;
|
|
}
|
|
|
|
static int vhost_vdpa_get_vq_index(struct vhost_dev *dev, int idx)
|
|
{
|
|
assert(idx >= dev->vq_index && idx < dev->vq_index + dev->nvqs);
|
|
|
|
trace_vhost_vdpa_get_vq_index(dev, idx, idx - dev->vq_index);
|
|
return idx - dev->vq_index;
|
|
}
|
|
|
|
static int vhost_vdpa_set_vring_ready(struct vhost_dev *dev)
|
|
{
|
|
int i;
|
|
trace_vhost_vdpa_set_vring_ready(dev);
|
|
for (i = 0; i < dev->nvqs; ++i) {
|
|
struct vhost_vring_state state = {
|
|
.index = dev->vq_index + i,
|
|
.num = 1,
|
|
};
|
|
vhost_vdpa_call(dev, VHOST_VDPA_SET_VRING_ENABLE, &state);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void vhost_vdpa_dump_config(struct vhost_dev *dev, const uint8_t *config,
|
|
uint32_t config_len)
|
|
{
|
|
int b, len;
|
|
char line[QEMU_HEXDUMP_LINE_LEN];
|
|
|
|
for (b = 0; b < config_len; b += 16) {
|
|
len = config_len - b;
|
|
qemu_hexdump_line(line, b, config, len, false);
|
|
trace_vhost_vdpa_dump_config(dev, line);
|
|
}
|
|
}
|
|
|
|
static int vhost_vdpa_set_config(struct vhost_dev *dev, const uint8_t *data,
|
|
uint32_t offset, uint32_t size,
|
|
uint32_t flags)
|
|
{
|
|
struct vhost_vdpa_config *config;
|
|
int ret;
|
|
unsigned long config_size = offsetof(struct vhost_vdpa_config, buf);
|
|
|
|
trace_vhost_vdpa_set_config(dev, offset, size, flags);
|
|
config = g_malloc(size + config_size);
|
|
config->off = offset;
|
|
config->len = size;
|
|
memcpy(config->buf, data, size);
|
|
if (trace_event_get_state_backends(TRACE_VHOST_VDPA_SET_CONFIG) &&
|
|
trace_event_get_state_backends(TRACE_VHOST_VDPA_DUMP_CONFIG)) {
|
|
vhost_vdpa_dump_config(dev, data, size);
|
|
}
|
|
ret = vhost_vdpa_call(dev, VHOST_VDPA_SET_CONFIG, config);
|
|
g_free(config);
|
|
return ret;
|
|
}
|
|
|
|
static int vhost_vdpa_get_config(struct vhost_dev *dev, uint8_t *config,
|
|
uint32_t config_len, Error **errp)
|
|
{
|
|
struct vhost_vdpa_config *v_config;
|
|
unsigned long config_size = offsetof(struct vhost_vdpa_config, buf);
|
|
int ret;
|
|
|
|
trace_vhost_vdpa_get_config(dev, config, config_len);
|
|
v_config = g_malloc(config_len + config_size);
|
|
v_config->len = config_len;
|
|
v_config->off = 0;
|
|
ret = vhost_vdpa_call(dev, VHOST_VDPA_GET_CONFIG, v_config);
|
|
memcpy(config, v_config->buf, config_len);
|
|
g_free(v_config);
|
|
if (trace_event_get_state_backends(TRACE_VHOST_VDPA_GET_CONFIG) &&
|
|
trace_event_get_state_backends(TRACE_VHOST_VDPA_DUMP_CONFIG)) {
|
|
vhost_vdpa_dump_config(dev, config, config_len);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int vhost_vdpa_dev_start(struct vhost_dev *dev, bool started)
|
|
{
|
|
struct vhost_vdpa *v = dev->opaque;
|
|
trace_vhost_vdpa_dev_start(dev, started);
|
|
if (started) {
|
|
uint8_t status = 0;
|
|
memory_listener_register(&v->listener, &address_space_memory);
|
|
vhost_vdpa_host_notifiers_init(dev);
|
|
vhost_vdpa_set_vring_ready(dev);
|
|
vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK);
|
|
vhost_vdpa_call(dev, VHOST_VDPA_GET_STATUS, &status);
|
|
|
|
return !(status & VIRTIO_CONFIG_S_DRIVER_OK);
|
|
} else {
|
|
vhost_vdpa_reset_device(dev);
|
|
vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_ACKNOWLEDGE |
|
|
VIRTIO_CONFIG_S_DRIVER);
|
|
vhost_vdpa_host_notifiers_uninit(dev, dev->nvqs);
|
|
memory_listener_unregister(&v->listener);
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static int vhost_vdpa_set_log_base(struct vhost_dev *dev, uint64_t base,
|
|
struct vhost_log *log)
|
|
{
|
|
trace_vhost_vdpa_set_log_base(dev, base, log->size, log->refcnt, log->fd,
|
|
log->log);
|
|
return vhost_vdpa_call(dev, VHOST_SET_LOG_BASE, &base);
|
|
}
|
|
|
|
static int vhost_vdpa_set_vring_addr(struct vhost_dev *dev,
|
|
struct vhost_vring_addr *addr)
|
|
{
|
|
trace_vhost_vdpa_set_vring_addr(dev, addr->index, addr->flags,
|
|
addr->desc_user_addr, addr->used_user_addr,
|
|
addr->avail_user_addr,
|
|
addr->log_guest_addr);
|
|
return vhost_vdpa_call(dev, VHOST_SET_VRING_ADDR, addr);
|
|
}
|
|
|
|
static int vhost_vdpa_set_vring_num(struct vhost_dev *dev,
|
|
struct vhost_vring_state *ring)
|
|
{
|
|
trace_vhost_vdpa_set_vring_num(dev, ring->index, ring->num);
|
|
return vhost_vdpa_call(dev, VHOST_SET_VRING_NUM, ring);
|
|
}
|
|
|
|
static int vhost_vdpa_set_vring_base(struct vhost_dev *dev,
|
|
struct vhost_vring_state *ring)
|
|
{
|
|
trace_vhost_vdpa_set_vring_base(dev, ring->index, ring->num);
|
|
return vhost_vdpa_call(dev, VHOST_SET_VRING_BASE, ring);
|
|
}
|
|
|
|
static int vhost_vdpa_get_vring_base(struct vhost_dev *dev,
|
|
struct vhost_vring_state *ring)
|
|
{
|
|
int ret;
|
|
|
|
ret = vhost_vdpa_call(dev, VHOST_GET_VRING_BASE, ring);
|
|
trace_vhost_vdpa_get_vring_base(dev, ring->index, ring->num);
|
|
return ret;
|
|
}
|
|
|
|
static int vhost_vdpa_set_vring_kick(struct vhost_dev *dev,
|
|
struct vhost_vring_file *file)
|
|
{
|
|
trace_vhost_vdpa_set_vring_kick(dev, file->index, file->fd);
|
|
return vhost_vdpa_call(dev, VHOST_SET_VRING_KICK, file);
|
|
}
|
|
|
|
static int vhost_vdpa_set_vring_call(struct vhost_dev *dev,
|
|
struct vhost_vring_file *file)
|
|
{
|
|
trace_vhost_vdpa_set_vring_call(dev, file->index, file->fd);
|
|
return vhost_vdpa_call(dev, VHOST_SET_VRING_CALL, file);
|
|
}
|
|
|
|
static int vhost_vdpa_get_features(struct vhost_dev *dev,
|
|
uint64_t *features)
|
|
{
|
|
int ret;
|
|
|
|
ret = vhost_vdpa_call(dev, VHOST_GET_FEATURES, features);
|
|
trace_vhost_vdpa_get_features(dev, *features);
|
|
return ret;
|
|
}
|
|
|
|
static int vhost_vdpa_set_owner(struct vhost_dev *dev)
|
|
{
|
|
trace_vhost_vdpa_set_owner(dev);
|
|
return vhost_vdpa_call(dev, VHOST_SET_OWNER, NULL);
|
|
}
|
|
|
|
static int vhost_vdpa_vq_get_addr(struct vhost_dev *dev,
|
|
struct vhost_vring_addr *addr, struct vhost_virtqueue *vq)
|
|
{
|
|
assert(dev->vhost_ops->backend_type == VHOST_BACKEND_TYPE_VDPA);
|
|
addr->desc_user_addr = (uint64_t)(unsigned long)vq->desc_phys;
|
|
addr->avail_user_addr = (uint64_t)(unsigned long)vq->avail_phys;
|
|
addr->used_user_addr = (uint64_t)(unsigned long)vq->used_phys;
|
|
trace_vhost_vdpa_vq_get_addr(dev, vq, addr->desc_user_addr,
|
|
addr->avail_user_addr, addr->used_user_addr);
|
|
return 0;
|
|
}
|
|
|
|
static bool vhost_vdpa_force_iommu(struct vhost_dev *dev)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
const VhostOps vdpa_ops = {
|
|
.backend_type = VHOST_BACKEND_TYPE_VDPA,
|
|
.vhost_backend_init = vhost_vdpa_init,
|
|
.vhost_backend_cleanup = vhost_vdpa_cleanup,
|
|
.vhost_set_log_base = vhost_vdpa_set_log_base,
|
|
.vhost_set_vring_addr = vhost_vdpa_set_vring_addr,
|
|
.vhost_set_vring_num = vhost_vdpa_set_vring_num,
|
|
.vhost_set_vring_base = vhost_vdpa_set_vring_base,
|
|
.vhost_get_vring_base = vhost_vdpa_get_vring_base,
|
|
.vhost_set_vring_kick = vhost_vdpa_set_vring_kick,
|
|
.vhost_set_vring_call = vhost_vdpa_set_vring_call,
|
|
.vhost_get_features = vhost_vdpa_get_features,
|
|
.vhost_set_backend_cap = vhost_vdpa_set_backend_cap,
|
|
.vhost_set_owner = vhost_vdpa_set_owner,
|
|
.vhost_set_vring_endian = NULL,
|
|
.vhost_backend_memslots_limit = vhost_vdpa_memslots_limit,
|
|
.vhost_set_mem_table = vhost_vdpa_set_mem_table,
|
|
.vhost_set_features = vhost_vdpa_set_features,
|
|
.vhost_reset_device = vhost_vdpa_reset_device,
|
|
.vhost_get_vq_index = vhost_vdpa_get_vq_index,
|
|
.vhost_get_config = vhost_vdpa_get_config,
|
|
.vhost_set_config = vhost_vdpa_set_config,
|
|
.vhost_requires_shm_log = NULL,
|
|
.vhost_migration_done = NULL,
|
|
.vhost_backend_can_merge = NULL,
|
|
.vhost_net_set_mtu = NULL,
|
|
.vhost_set_iotlb_callback = NULL,
|
|
.vhost_send_device_iotlb_msg = NULL,
|
|
.vhost_dev_start = vhost_vdpa_dev_start,
|
|
.vhost_get_device_id = vhost_vdpa_get_device_id,
|
|
.vhost_vq_get_addr = vhost_vdpa_vq_get_addr,
|
|
.vhost_force_iommu = vhost_vdpa_force_iommu,
|
|
};
|