diff options
Diffstat (limited to 'hw/vhost.c')
| -rw-r--r-- | hw/vhost.c | 47 |
1 files changed, 39 insertions, 8 deletions
diff --git a/hw/vhost.c b/hw/vhost.c index a1c5e4cb85..cd56e75d0a 100644 --- a/hw/vhost.c +++ b/hw/vhost.c @@ -17,6 +17,7 @@ #include <linux/vhost.h> static void vhost_dev_sync_region(struct vhost_dev *dev, + MemoryRegionSection *section, uint64_t mfirst, uint64_t mlast, uint64_t rfirst, uint64_t rlast) { @@ -49,8 +50,8 @@ static void vhost_dev_sync_region(struct vhost_dev *dev, ffsll(log) : ffs(log))) { ram_addr_t ram_addr; bit -= 1; - ram_addr = cpu_get_physical_page_desc(addr + bit * VHOST_LOG_PAGE); - cpu_physical_memory_set_dirty(ram_addr); + ram_addr = section->offset_within_region + bit * VHOST_LOG_PAGE; + memory_region_set_dirty(section->mr, ram_addr); log &= ~(0x1ull << bit); } addr += VHOST_LOG_CHUNK; @@ -58,6 +59,7 @@ static void vhost_dev_sync_region(struct vhost_dev *dev, } static int vhost_sync_dirty_bitmap(struct vhost_dev *dev, + MemoryRegionSection *section, target_phys_addr_t start_addr, target_phys_addr_t end_addr) { @@ -68,14 +70,14 @@ static int vhost_sync_dirty_bitmap(struct vhost_dev *dev, } for (i = 0; i < dev->mem->nregions; ++i) { struct vhost_memory_region *reg = dev->mem->regions + i; - vhost_dev_sync_region(dev, start_addr, end_addr, + vhost_dev_sync_region(dev, section, start_addr, end_addr, reg->guest_phys_addr, range_get_last(reg->guest_phys_addr, reg->memory_size)); } for (i = 0; i < dev->nvqs; ++i) { struct vhost_virtqueue *vq = dev->vqs + i; - vhost_dev_sync_region(dev, start_addr, end_addr, vq->used_phys, + vhost_dev_sync_region(dev, section, start_addr, end_addr, vq->used_phys, range_get_last(vq->used_phys, vq->used_size)); } return 0; @@ -89,7 +91,7 @@ static void vhost_log_sync(MemoryListener *listener, target_phys_addr_t start_addr = section->offset_within_address_space; target_phys_addr_t end_addr = start_addr + section->size; - vhost_sync_dirty_bitmap(dev, start_addr, end_addr); + vhost_sync_dirty_bitmap(dev, section, start_addr, end_addr); } /* Assign/unassign. Keep an unsorted array of non-overlapping @@ -261,7 +263,7 @@ static inline void vhost_dev_log_resize(struct vhost_dev* dev, uint64_t size) { vhost_log_chunk_t *log; uint64_t log_base; - int r; + int r, i; if (size) { log = g_malloc0(size * sizeof *log); } else { @@ -270,7 +272,10 @@ static inline void vhost_dev_log_resize(struct vhost_dev* dev, uint64_t size) log_base = (uint64_t)(unsigned long)log; r = ioctl(dev->control, VHOST_SET_LOG_BASE, &log_base); assert(r >= 0); - vhost_sync_dirty_bitmap(dev, 0, (target_phys_addr_t)~0x0ull); + for (i = 0; i < dev->n_mem_sections; ++i) { + vhost_sync_dirty_bitmap(dev, &dev->mem_sections[i], + 0, (target_phys_addr_t)~0x0ull); + } if (dev->log) { g_free(dev->log); } @@ -428,13 +433,33 @@ static void vhost_set_memory(MemoryListener *listener, static void vhost_region_add(MemoryListener *listener, MemoryRegionSection *section) { + struct vhost_dev *dev = container_of(listener, struct vhost_dev, + memory_listener); + + ++dev->n_mem_sections; + dev->mem_sections = g_renew(MemoryRegionSection, dev->mem_sections, + dev->n_mem_sections); + dev->mem_sections[dev->n_mem_sections - 1] = *section; vhost_set_memory(listener, section, true); } static void vhost_region_del(MemoryListener *listener, MemoryRegionSection *section) { + struct vhost_dev *dev = container_of(listener, struct vhost_dev, + memory_listener); + int i; + vhost_set_memory(listener, section, false); + for (i = 0; i < dev->n_mem_sections; ++i) { + if (dev->mem_sections[i].offset_within_address_space + == section->offset_within_address_space) { + --dev->n_mem_sections; + memmove(&dev->mem_sections[i], &dev->mem_sections[i+1], + dev->n_mem_sections - i); + break; + } + } } static int vhost_virtqueue_set_addr(struct vhost_dev *dev, @@ -714,6 +739,8 @@ int vhost_dev_init(struct vhost_dev *hdev, int devfd, bool force) .log_global_stop = vhost_log_global_stop, }; hdev->mem = g_malloc0(offsetof(struct vhost_memory, regions)); + hdev->n_mem_sections = 0; + hdev->mem_sections = NULL; hdev->log = NULL; hdev->log_size = 0; hdev->log_enabled = false; @@ -731,6 +758,7 @@ void vhost_dev_cleanup(struct vhost_dev *hdev) { memory_listener_unregister(&hdev->memory_listener); g_free(hdev->mem); + g_free(hdev->mem_sections); close(hdev->control); } @@ -871,7 +899,10 @@ void vhost_dev_stop(struct vhost_dev *hdev, VirtIODevice *vdev) hdev->vqs + i, i); } - vhost_sync_dirty_bitmap(hdev, 0, (target_phys_addr_t)~0x0ull); + for (i = 0; i < hdev->n_mem_sections; ++i) { + vhost_sync_dirty_bitmap(hdev, &hdev->mem_sections[i], + 0, (target_phys_addr_t)~0x0ull); + } r = vdev->binding->set_guest_notifiers(vdev->binding_opaque, false); if (r < 0) { fprintf(stderr, "vhost guest notifier cleanup failed: %d\n", r); |