diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/vhost.c | 126 | ||||
| -rw-r--r-- | hw/vhost.h | 3 |
2 files changed, 96 insertions, 33 deletions
diff --git a/hw/vhost.c b/hw/vhost.c index 0870cb7d85..a1c5e4cb85 100644 --- a/hw/vhost.c +++ b/hw/vhost.c @@ -57,12 +57,12 @@ static void vhost_dev_sync_region(struct vhost_dev *dev, } } -static int vhost_client_sync_dirty_bitmap(CPUPhysMemoryClient *client, - target_phys_addr_t start_addr, - target_phys_addr_t end_addr) +static int vhost_sync_dirty_bitmap(struct vhost_dev *dev, + target_phys_addr_t start_addr, + target_phys_addr_t end_addr) { - struct vhost_dev *dev = container_of(client, struct vhost_dev, client); int i; + if (!dev->log_enabled || !dev->started) { return 0; } @@ -81,6 +81,17 @@ static int vhost_client_sync_dirty_bitmap(CPUPhysMemoryClient *client, return 0; } +static void vhost_log_sync(MemoryListener *listener, + MemoryRegionSection *section) +{ + struct vhost_dev *dev = container_of(listener, struct vhost_dev, + memory_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); +} + /* Assign/unassign. Keep an unsorted array of non-overlapping * memory regions in dev->mem. */ static void vhost_dev_unassign_memory(struct vhost_dev *dev, @@ -259,8 +270,7 @@ 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_client_sync_dirty_bitmap(&dev->client, 0, - (target_phys_addr_t)~0x0ull); + vhost_sync_dirty_bitmap(dev, 0, (target_phys_addr_t)~0x0ull); if (dev->log) { g_free(dev->log); } @@ -335,31 +345,37 @@ static bool vhost_dev_cmp_memory(struct vhost_dev *dev, return uaddr != reg->userspace_addr + start_addr - reg->guest_phys_addr; } -static void vhost_client_set_memory(CPUPhysMemoryClient *client, - target_phys_addr_t start_addr, - ram_addr_t size, - ram_addr_t phys_offset, - bool log_dirty) +static void vhost_set_memory(MemoryListener *listener, + MemoryRegionSection *section, + bool add) { - struct vhost_dev *dev = container_of(client, struct vhost_dev, client); - ram_addr_t flags = phys_offset & ~TARGET_PAGE_MASK; + struct vhost_dev *dev = container_of(listener, struct vhost_dev, + memory_listener); + target_phys_addr_t start_addr = section->offset_within_address_space; + ram_addr_t size = section->size; + bool log_dirty = memory_region_is_logging(section->mr); int s = offsetof(struct vhost_memory, regions) + (dev->mem->nregions + 1) * sizeof dev->mem->regions[0]; uint64_t log_size; int r; + void *ram; + + if (!memory_region_is_ram(section->mr)) { + return; + } dev->mem = g_realloc(dev->mem, s); if (log_dirty) { - flags = IO_MEM_UNASSIGNED; + add = false; } assert(size); /* Optimize no-change case. At least cirrus_vga does this a lot at this time. */ - if (flags == IO_MEM_RAM) { - if (!vhost_dev_cmp_memory(dev, start_addr, size, - (uintptr_t)qemu_get_ram_ptr(phys_offset))) { + ram = memory_region_get_ram_ptr(section->mr); + if (add) { + if (!vhost_dev_cmp_memory(dev, start_addr, size, (uintptr_t)ram)) { /* Region exists with same address. Nothing to do. */ return; } @@ -371,10 +387,9 @@ static void vhost_client_set_memory(CPUPhysMemoryClient *client, } vhost_dev_unassign_memory(dev, start_addr, size); - if (flags == IO_MEM_RAM) { + if (add) { /* Add given mapping, merging adjacent regions if any */ - vhost_dev_assign_memory(dev, start_addr, size, - (uintptr_t)qemu_get_ram_ptr(phys_offset)); + vhost_dev_assign_memory(dev, start_addr, size, (uintptr_t)ram); } else { /* Remove old mapping for this memory, if any. */ vhost_dev_unassign_memory(dev, start_addr, size); @@ -410,6 +425,18 @@ static void vhost_client_set_memory(CPUPhysMemoryClient *client, } } +static void vhost_region_add(MemoryListener *listener, + MemoryRegionSection *section) +{ + vhost_set_memory(listener, section, true); +} + +static void vhost_region_del(MemoryListener *listener, + MemoryRegionSection *section) +{ + vhost_set_memory(listener, section, false); +} + static int vhost_virtqueue_set_addr(struct vhost_dev *dev, struct vhost_virtqueue *vq, unsigned idx, bool enable_log) @@ -467,10 +494,10 @@ err_features: return r; } -static int vhost_client_migration_log(CPUPhysMemoryClient *client, - int enable) +static int vhost_migration_log(MemoryListener *listener, int enable) { - struct vhost_dev *dev = container_of(client, struct vhost_dev, client); + struct vhost_dev *dev = container_of(listener, struct vhost_dev, + memory_listener); int r; if (!!enable == dev->log_enabled) { return 0; @@ -500,6 +527,38 @@ static int vhost_client_migration_log(CPUPhysMemoryClient *client, return 0; } +static void vhost_log_global_start(MemoryListener *listener) +{ + int r; + + r = vhost_migration_log(listener, true); + if (r < 0) { + abort(); + } +} + +static void vhost_log_global_stop(MemoryListener *listener) +{ + int r; + + r = vhost_migration_log(listener, false); + if (r < 0) { + abort(); + } +} + +static void vhost_log_start(MemoryListener *listener, + MemoryRegionSection *section) +{ + /* FIXME: implement */ +} + +static void vhost_log_stop(MemoryListener *listener, + MemoryRegionSection *section) +{ + /* FIXME: implement */ +} + static int vhost_virtqueue_init(struct vhost_dev *dev, struct VirtIODevice *vdev, struct vhost_virtqueue *vq, @@ -645,17 +704,21 @@ int vhost_dev_init(struct vhost_dev *hdev, int devfd, bool force) } hdev->features = features; - hdev->client.set_memory = vhost_client_set_memory; - hdev->client.sync_dirty_bitmap = vhost_client_sync_dirty_bitmap; - hdev->client.migration_log = vhost_client_migration_log; - hdev->client.log_start = NULL; - hdev->client.log_stop = NULL; + hdev->memory_listener = (MemoryListener) { + .region_add = vhost_region_add, + .region_del = vhost_region_del, + .log_start = vhost_log_start, + .log_stop = vhost_log_stop, + .log_sync = vhost_log_sync, + .log_global_start = vhost_log_global_start, + .log_global_stop = vhost_log_global_stop, + }; hdev->mem = g_malloc0(offsetof(struct vhost_memory, regions)); hdev->log = NULL; hdev->log_size = 0; hdev->log_enabled = false; hdev->started = false; - cpu_register_phys_memory_client(&hdev->client); + memory_listener_register(&hdev->memory_listener); hdev->force = force; return 0; fail: @@ -666,7 +729,7 @@ fail: void vhost_dev_cleanup(struct vhost_dev *hdev) { - cpu_unregister_phys_memory_client(&hdev->client); + memory_listener_unregister(&hdev->memory_listener); g_free(hdev->mem); close(hdev->control); } @@ -808,8 +871,7 @@ void vhost_dev_stop(struct vhost_dev *hdev, VirtIODevice *vdev) hdev->vqs + i, i); } - vhost_client_sync_dirty_bitmap(&hdev->client, 0, - (target_phys_addr_t)~0x0ull); + vhost_sync_dirty_bitmap(hdev, 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); diff --git a/hw/vhost.h b/hw/vhost.h index c9452f0732..d1824ec9d9 100644 --- a/hw/vhost.h +++ b/hw/vhost.h @@ -3,6 +3,7 @@ #include "hw/hw.h" #include "hw/virtio.h" +#include "memory.h" /* Generic structures common for any vhost based device. */ struct vhost_virtqueue { @@ -26,7 +27,7 @@ typedef unsigned long vhost_log_chunk_t; struct vhost_memory; struct vhost_dev { - CPUPhysMemoryClient client; + MemoryListener memory_listener; int control; struct vhost_memory *mem; struct vhost_virtqueue *vqs; |