* GNU GPL, version 2 or (at your option) any later version.
*/
-#include <sys/ioctl.h>
+#include "qemu/osdep.h"
#include "hw/virtio/vhost.h"
#include "hw/hw.h"
#include "qemu/atomic.h"
#include "qemu/range.h"
+#include "qemu/error-report.h"
+#include "qemu/memfd.h"
#include <linux/vhost.h>
#include "exec/address-spaces.h"
#include "hw/virtio/virtio-bus.h"
+#include "hw/virtio/virtio-access.h"
+#include "migration/migration.h"
+
+static struct vhost_log *vhost_log;
+static struct vhost_log *vhost_log_shm;
+
+static unsigned int used_memslots;
+static QLIST_HEAD(, vhost_dev) vhost_devices =
+ QLIST_HEAD_INITIALIZER(vhost_devices);
+
+bool vhost_has_free_slot(void)
+{
+ unsigned int slots_limit = ~0U;
+ struct vhost_dev *hdev;
+
+ QLIST_FOREACH(hdev, &vhost_devices, entry) {
+ unsigned int r = hdev->vhost_ops->vhost_backend_memslots_limit(hdev);
+ slots_limit = MIN(slots_limit, r);
+ }
+ return slots_limit > used_memslots;
+}
static void vhost_dev_sync_region(struct vhost_dev *dev,
MemoryRegionSection *section,
uint64_t mfirst, uint64_t mlast,
uint64_t rfirst, uint64_t rlast)
{
+ vhost_log_chunk_t *log = dev->log->log;
+
uint64_t start = MAX(mfirst, rfirst);
uint64_t end = MIN(mlast, rlast);
- vhost_log_chunk_t *from = dev->log + start / VHOST_LOG_CHUNK;
- vhost_log_chunk_t *to = dev->log + end / VHOST_LOG_CHUNK + 1;
+ vhost_log_chunk_t *from = log + start / VHOST_LOG_CHUNK;
+ vhost_log_chunk_t *to = log + end / VHOST_LOG_CHUNK + 1;
uint64_t addr = (start / VHOST_LOG_CHUNK) * VHOST_LOG_CHUNK;
if (end < start) {
for (;from < to; ++from) {
vhost_log_chunk_t log;
- int bit;
/* We first check with non-atomic: much cheaper,
* and we expect non-dirty to be the common case. */
if (!*from) {
/* Data must be read atomically. We don't really need barrier semantics
* but it's easier to use atomic_* than roll our own. */
log = atomic_xchg(from, 0);
- while ((bit = sizeof(log) > sizeof(int) ?
- ffsll(log) : ffs(log))) {
+ while (log) {
+ int bit = ctzl(log);
hwaddr page_addr;
hwaddr section_offset;
hwaddr mr_offset;
- bit -= 1;
page_addr = addr + bit * VHOST_LOG_PAGE;
section_offset = page_addr - section->offset_within_address_space;
mr_offset = section_offset + section->offset_within_region;
return log_size;
}
-static inline void vhost_dev_log_resize(struct vhost_dev* dev, uint64_t size)
+static struct vhost_log *vhost_log_alloc(uint64_t size, bool share)
{
- vhost_log_chunk_t *log;
- uint64_t log_base;
- int r;
+ struct vhost_log *log;
+ uint64_t logsize = size * sizeof(*(log->log));
+ int fd = -1;
+
+ log = g_new0(struct vhost_log, 1);
+ if (share) {
+ log->log = qemu_memfd_alloc("vhost-log", logsize,
+ F_SEAL_GROW | F_SEAL_SHRINK | F_SEAL_SEAL,
+ &fd);
+ memset(log->log, 0, logsize);
+ } else {
+ log->log = g_malloc0(logsize);
+ }
- log = g_malloc0(size * sizeof *log);
- log_base = (uint64_t)(unsigned long)log;
- r = ioctl(dev->control, VHOST_SET_LOG_BASE, &log_base);
- assert(r >= 0);
- /* Sync only the range covered by the old log */
- if (dev->log_size) {
- vhost_log_sync_range(dev, 0, dev->log_size * VHOST_LOG_CHUNK - 1);
+ log->size = size;
+ log->refcnt = 1;
+ log->fd = fd;
+
+ return log;
+}
+
+static struct vhost_log *vhost_log_get(uint64_t size, bool share)
+{
+ struct vhost_log *log = share ? vhost_log_shm : vhost_log;
+
+ if (!log || log->size != size) {
+ log = vhost_log_alloc(size, share);
+ if (share) {
+ vhost_log_shm = log;
+ } else {
+ vhost_log = log;
+ }
+ } else {
+ ++log->refcnt;
+ }
+
+ return log;
+}
+
+static void vhost_log_put(struct vhost_dev *dev, bool sync)
+{
+ struct vhost_log *log = dev->log;
+
+ if (!log) {
+ return;
}
- if (dev->log) {
- g_free(dev->log);
+
+ --log->refcnt;
+ if (log->refcnt == 0) {
+ /* Sync only the range covered by the old log */
+ if (dev->log_size && sync) {
+ vhost_log_sync_range(dev, 0, dev->log_size * VHOST_LOG_CHUNK - 1);
+ }
+
+ if (vhost_log == log) {
+ g_free(log->log);
+ vhost_log = NULL;
+ } else if (vhost_log_shm == log) {
+ qemu_memfd_free(log->log, log->size * sizeof(*(log->log)),
+ log->fd);
+ vhost_log_shm = NULL;
+ }
+
+ g_free(log);
}
+}
+
+static bool vhost_dev_log_is_shared(struct vhost_dev *dev)
+{
+ return dev->vhost_ops->vhost_requires_shm_log &&
+ dev->vhost_ops->vhost_requires_shm_log(dev);
+}
+
+static inline void vhost_dev_log_resize(struct vhost_dev *dev, uint64_t size)
+{
+ struct vhost_log *log = vhost_log_get(size, vhost_dev_log_is_shared(dev));
+ uint64_t log_base = (uintptr_t)log->log;
+ int r;
+
+ /* inform backend of log switching, this must be done before
+ releasing the current log, to ensure no logging is lost */
+ r = dev->vhost_ops->vhost_set_log_base(dev, log_base, log);
+ assert(r >= 0);
+ vhost_log_put(dev, true);
dev->log = log;
dev->log_size = size;
}
uint64_t size)
{
int i;
- for (i = 0; i < dev->nvqs; ++i) {
+ int r = 0;
+
+ for (i = 0; !r && i < dev->nvqs; ++i) {
struct vhost_virtqueue *vq = dev->vqs + i;
hwaddr l;
void *p;
p = cpu_physical_memory_map(vq->ring_phys, &l, 1);
if (!p || l != vq->ring_size) {
fprintf(stderr, "Unable to map ring buffer for ring %d\n", i);
- return -ENOMEM;
+ r = -ENOMEM;
}
if (p != vq->ring) {
fprintf(stderr, "Ring buffer relocated for ring %d\n", i);
- return -EBUSY;
+ r = -EBUSY;
}
cpu_physical_memory_unmap(p, l, 0, 0);
}
- return 0;
+ return r;
}
static struct vhost_memory_region *vhost_dev_find_reg(struct vhost_dev *dev,
memory_listener);
hwaddr start_addr = section->offset_within_address_space;
ram_addr_t size = int128_get64(section->size);
- bool log_dirty = memory_region_is_logging(section->mr);
+ bool log_dirty =
+ memory_region_get_dirty_log_mask(section->mr) & ~(1 << DIRTY_MEMORY_MIGRATION);
int s = offsetof(struct vhost_memory, regions) +
(dev->mem->nregions + 1) * sizeof dev->mem->regions[0];
void *ram;
dev->mem_changed_start_addr = MIN(dev->mem_changed_start_addr, start_addr);
dev->mem_changed_end_addr = MAX(dev->mem_changed_end_addr, start_addr + size - 1);
dev->memory_changed = true;
+ used_memslots = dev->mem->nregions;
}
static bool vhost_section(MemoryRegionSection *section)
}
if (!dev->log_enabled) {
- r = ioctl(dev->control, VHOST_SET_MEM_TABLE, dev->mem);
+ r = dev->vhost_ops->vhost_set_mem_table(dev, dev->mem);
assert(r >= 0);
dev->memory_changed = false;
return;
if (dev->log_size < log_size) {
vhost_dev_log_resize(dev, log_size + VHOST_LOG_BUFFER);
}
- r = ioctl(dev->control, VHOST_SET_MEM_TABLE, dev->mem);
+ r = dev->vhost_ops->vhost_set_mem_table(dev, dev->mem);
assert(r >= 0);
/* To log less, can only decrease log size after table update. */
if (dev->log_size > log_size + VHOST_LOG_BUFFER) {
.log_guest_addr = vq->used_phys,
.flags = enable_log ? (1 << VHOST_VRING_F_LOG) : 0,
};
- int r = ioctl(dev->control, VHOST_SET_VRING_ADDR, &addr);
+ int r = dev->vhost_ops->vhost_set_vring_addr(dev, &addr);
if (r < 0) {
return -errno;
}
uint64_t features = dev->acked_features;
int r;
if (enable_log) {
- features |= 0x1 << VHOST_F_LOG_ALL;
+ features |= 0x1ULL << VHOST_F_LOG_ALL;
}
- r = ioctl(dev->control, VHOST_SET_FEATURES, &features);
+ r = dev->vhost_ops->vhost_set_features(dev, features);
return r < 0 ? -errno : 0;
}
static int vhost_dev_set_log(struct vhost_dev *dev, bool enable_log)
{
- int r, t, i;
+ int r, t, i, idx;
r = vhost_dev_set_features(dev, enable_log);
if (r < 0) {
goto err_features;
}
for (i = 0; i < dev->nvqs; ++i) {
- r = vhost_virtqueue_set_addr(dev, dev->vqs + i, i,
+ idx = dev->vhost_ops->vhost_get_vq_index(dev, dev->vq_index + i);
+ r = vhost_virtqueue_set_addr(dev, dev->vqs + i, idx,
enable_log);
if (r < 0) {
goto err_vq;
return 0;
err_vq:
for (; i >= 0; --i) {
- t = vhost_virtqueue_set_addr(dev, dev->vqs + i, i,
+ idx = dev->vhost_ops->vhost_get_vq_index(dev, dev->vq_index + i);
+ t = vhost_virtqueue_set_addr(dev, dev->vqs + i, idx,
dev->log_enabled);
assert(t >= 0);
}
if (r < 0) {
return r;
}
- if (dev->log) {
- g_free(dev->log);
- }
+ vhost_log_put(dev, false);
dev->log = NULL;
dev->log_size = 0;
} else {
}
static void vhost_log_start(MemoryListener *listener,
- MemoryRegionSection *section)
+ MemoryRegionSection *section,
+ int old, int new)
{
/* FIXME: implement */
}
static void vhost_log_stop(MemoryListener *listener,
- MemoryRegionSection *section)
+ MemoryRegionSection *section,
+ int old, int new)
{
/* FIXME: implement */
}
+/* The vhost driver natively knows how to handle the vrings of non
+ * cross-endian legacy devices and modern devices. Only legacy devices
+ * exposed to a bi-endian guest may require the vhost driver to use a
+ * specific endianness.
+ */
+static inline bool vhost_needs_vring_endian(VirtIODevice *vdev)
+{
+ if (virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1)) {
+ return false;
+ }
+#ifdef TARGET_IS_BIENDIAN
+#ifdef HOST_WORDS_BIGENDIAN
+ return vdev->device_endian == VIRTIO_DEVICE_ENDIAN_LITTLE;
+#else
+ return vdev->device_endian == VIRTIO_DEVICE_ENDIAN_BIG;
+#endif
+#else
+ return false;
+#endif
+}
+
+static int vhost_virtqueue_set_vring_endian_legacy(struct vhost_dev *dev,
+ bool is_big_endian,
+ int vhost_vq_index)
+{
+ struct vhost_vring_state s = {
+ .index = vhost_vq_index,
+ .num = is_big_endian
+ };
+
+ if (!dev->vhost_ops->vhost_set_vring_endian(dev, &s)) {
+ return 0;
+ }
+
+ if (errno == ENOTTY) {
+ error_report("vhost does not support cross-endian");
+ return -ENOSYS;
+ }
+
+ return -errno;
+}
+
static int vhost_virtqueue_start(struct vhost_dev *dev,
struct VirtIODevice *vdev,
struct vhost_virtqueue *vq,
{
hwaddr s, l, a;
int r;
- int vhost_vq_index = idx - dev->vq_index;
+ int vhost_vq_index = dev->vhost_ops->vhost_get_vq_index(dev, idx);
struct vhost_vring_file file = {
.index = vhost_vq_index
};
};
struct VirtQueue *vvq = virtio_get_queue(vdev, idx);
- assert(idx >= dev->vq_index && idx < dev->vq_index + dev->nvqs);
vq->num = state.num = virtio_queue_get_num(vdev, idx);
- r = ioctl(dev->control, VHOST_SET_VRING_NUM, &state);
+ r = dev->vhost_ops->vhost_set_vring_num(dev, &state);
if (r) {
return -errno;
}
state.num = virtio_queue_get_last_avail_idx(vdev, idx);
- r = ioctl(dev->control, VHOST_SET_VRING_BASE, &state);
+ r = dev->vhost_ops->vhost_set_vring_base(dev, &state);
if (r) {
return -errno;
}
+ if (vhost_needs_vring_endian(vdev)) {
+ r = vhost_virtqueue_set_vring_endian_legacy(dev,
+ virtio_is_big_endian(vdev),
+ vhost_vq_index);
+ if (r) {
+ return -errno;
+ }
+ }
+
s = l = virtio_queue_get_desc_size(vdev, idx);
a = virtio_queue_get_desc_addr(vdev, idx);
vq->desc = cpu_physical_memory_map(a, &l, 0);
}
file.fd = event_notifier_get_fd(virtio_queue_get_host_notifier(vvq));
- r = ioctl(dev->control, VHOST_SET_VRING_KICK, &file);
+ r = dev->vhost_ops->vhost_set_vring_kick(dev, &file);
if (r) {
r = -errno;
goto fail_kick;
/* Clear and discard previous events if any. */
event_notifier_test_and_clear(&vq->masked_notifier);
+ /* Init vring in unmasked state, unless guest_notifier_mask
+ * will do it later.
+ */
+ if (!vdev->use_guest_notifier_mask) {
+ /* TODO: check and handle errors. */
+ vhost_virtqueue_mask(dev, vdev, idx, false);
+ }
+
return 0;
fail_kick:
struct vhost_virtqueue *vq,
unsigned idx)
{
+ int vhost_vq_index = dev->vhost_ops->vhost_get_vq_index(dev, idx);
struct vhost_vring_state state = {
- .index = idx - dev->vq_index
+ .index = vhost_vq_index,
};
int r;
- assert(idx >= dev->vq_index && idx < dev->vq_index + dev->nvqs);
- r = ioctl(dev->control, VHOST_GET_VRING_BASE, &state);
+
+ r = dev->vhost_ops->vhost_get_vring_base(dev, &state);
if (r < 0) {
fprintf(stderr, "vhost VQ %d ring restore failed: %d\n", idx, r);
fflush(stderr);
}
virtio_queue_set_last_avail_idx(vdev, idx, state.num);
+ virtio_queue_invalidate_signalled_used(vdev, idx);
+
+ /* In the cross-endian case, we need to reset the vring endianness to
+ * native as legacy devices expect so by default.
+ */
+ if (vhost_needs_vring_endian(vdev)) {
+ r = vhost_virtqueue_set_vring_endian_legacy(dev,
+ !virtio_is_big_endian(vdev),
+ vhost_vq_index);
+ if (r < 0) {
+ error_report("failed to reset vring endianness");
+ }
+ }
+
assert (r >= 0);
cpu_physical_memory_unmap(vq->ring, virtio_queue_get_ring_size(vdev, idx),
0, virtio_queue_get_ring_size(vdev, idx));
static int vhost_virtqueue_init(struct vhost_dev *dev,
struct vhost_virtqueue *vq, int n)
{
+ int vhost_vq_index = dev->vhost_ops->vhost_get_vq_index(dev, n);
struct vhost_vring_file file = {
- .index = n,
+ .index = vhost_vq_index,
};
int r = event_notifier_init(&vq->masked_notifier, 0);
if (r < 0) {
}
file.fd = event_notifier_get_fd(&vq->masked_notifier);
- r = ioctl(dev->control, VHOST_SET_VRING_CALL, &file);
+ r = dev->vhost_ops->vhost_set_vring_call(dev, &file);
if (r) {
r = -errno;
goto fail_call;
event_notifier_cleanup(&vq->masked_notifier);
}
-int vhost_dev_init(struct vhost_dev *hdev, int devfd, const char *devpath,
- bool force)
+int vhost_dev_init(struct vhost_dev *hdev, void *opaque,
+ VhostBackendType backend_type)
{
uint64_t features;
int i, r;
- if (devfd >= 0) {
- hdev->control = devfd;
- } else {
- hdev->control = open(devpath, O_RDWR);
- if (hdev->control < 0) {
- return -errno;
- }
+
+ hdev->migration_blocker = NULL;
+
+ if (vhost_set_backend_type(hdev, backend_type) < 0) {
+ close((uintptr_t)opaque);
+ return -1;
+ }
+
+ if (hdev->vhost_ops->vhost_backend_init(hdev, opaque) < 0) {
+ close((uintptr_t)opaque);
+ return -errno;
+ }
+
+ if (used_memslots > hdev->vhost_ops->vhost_backend_memslots_limit(hdev)) {
+ fprintf(stderr, "vhost backend memory slots limit is less"
+ " than current number of present memory slots\n");
+ close((uintptr_t)opaque);
+ return -1;
}
- r = ioctl(hdev->control, VHOST_SET_OWNER, NULL);
+ QLIST_INSERT_HEAD(&vhost_devices, hdev, entry);
+
+ r = hdev->vhost_ops->vhost_set_owner(hdev);
if (r < 0) {
goto fail;
}
- r = ioctl(hdev->control, VHOST_GET_FEATURES, &features);
+ r = hdev->vhost_ops->vhost_get_features(hdev, &features);
if (r < 0) {
goto fail;
}
for (i = 0; i < hdev->nvqs; ++i) {
- r = vhost_virtqueue_init(hdev, hdev->vqs + i, i);
+ r = vhost_virtqueue_init(hdev, hdev->vqs + i, hdev->vq_index + i);
if (r < 0) {
goto fail_vq;
}
.eventfd_del = vhost_eventfd_del,
.priority = 10
};
+
+ if (hdev->migration_blocker == NULL) {
+ if (!(hdev->features & (0x1ULL << VHOST_F_LOG_ALL))) {
+ error_setg(&hdev->migration_blocker,
+ "Migration disabled: vhost lacks VHOST_F_LOG_ALL feature.");
+ } else if (!qemu_memfd_check()) {
+ error_setg(&hdev->migration_blocker,
+ "Migration disabled: failed to allocate shared memory");
+ }
+ }
+
+ if (hdev->migration_blocker != NULL) {
+ migrate_add_blocker(hdev->migration_blocker);
+ }
+
hdev->mem = g_malloc0(offsetof(struct vhost_memory, regions));
hdev->n_mem_sections = 0;
hdev->mem_sections = NULL;
hdev->started = false;
hdev->memory_changed = false;
memory_listener_register(&hdev->memory_listener, &address_space_memory);
- hdev->force = force;
return 0;
fail_vq:
while (--i >= 0) {
}
fail:
r = -errno;
- close(hdev->control);
+ hdev->vhost_ops->vhost_backend_cleanup(hdev);
+ QLIST_REMOVE(hdev, entry);
return r;
}
vhost_virtqueue_cleanup(hdev->vqs + i);
}
memory_listener_unregister(&hdev->memory_listener);
+ if (hdev->migration_blocker) {
+ migrate_del_blocker(hdev->migration_blocker);
+ error_free(hdev->migration_blocker);
+ }
g_free(hdev->mem);
g_free(hdev->mem_sections);
- close(hdev->control);
-}
-
-bool vhost_dev_query(struct vhost_dev *hdev, VirtIODevice *vdev)
-{
- BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev)));
- VirtioBusState *vbus = VIRTIO_BUS(qbus);
- VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(vbus);
-
- return !k->query_guest_notifiers ||
- k->query_guest_notifiers(qbus->parent) ||
- hdev->force;
+ hdev->vhost_ops->vhost_backend_cleanup(hdev);
+ QLIST_REMOVE(hdev, entry);
}
/* Stop processing guest IO notifications in qemu.
BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev)));
VirtioBusState *vbus = VIRTIO_BUS(qbus);
VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(vbus);
- int i, r;
+ int i, r, e;
if (!k->set_host_notifier) {
fprintf(stderr, "binding does not support host notifiers\n");
r = -ENOSYS;
return 0;
fail_vq:
while (--i >= 0) {
- r = k->set_host_notifier(qbus->parent, hdev->vq_index + i, false);
- if (r < 0) {
+ e = k->set_host_notifier(qbus->parent, hdev->vq_index + i, false);
+ if (e < 0) {
fprintf(stderr, "vhost VQ %d notifier cleanup error: %d\n", i, -r);
fflush(stderr);
}
- assert (r >= 0);
+ assert (e >= 0);
}
fail:
return r;
bool vhost_virtqueue_pending(struct vhost_dev *hdev, int n)
{
struct vhost_virtqueue *vq = hdev->vqs + n - hdev->vq_index;
- assert(hdev->started);
assert(n >= hdev->vq_index && n < hdev->vq_index + hdev->nvqs);
return event_notifier_test_and_clear(&vq->masked_notifier);
}
{
struct VirtQueue *vvq = virtio_get_queue(vdev, n);
int r, index = n - hdev->vq_index;
+ struct vhost_vring_file file;
- assert(hdev->started);
- assert(n >= hdev->vq_index && n < hdev->vq_index + hdev->nvqs);
-
- struct vhost_vring_file file = {
- .index = index
- };
if (mask) {
+ assert(vdev->use_guest_notifier_mask);
file.fd = event_notifier_get_fd(&hdev->vqs[index].masked_notifier);
} else {
file.fd = event_notifier_get_fd(virtio_queue_get_guest_notifier(vvq));
}
- r = ioctl(hdev->control, VHOST_SET_VRING_CALL, &file);
+
+ file.index = hdev->vhost_ops->vhost_get_vq_index(hdev, n);
+ r = hdev->vhost_ops->vhost_set_vring_call(hdev, &file);
assert(r >= 0);
}
+uint64_t vhost_get_features(struct vhost_dev *hdev, const int *feature_bits,
+ uint64_t features)
+{
+ const int *bit = feature_bits;
+ while (*bit != VHOST_INVALID_FEATURE_BIT) {
+ uint64_t bit_mask = (1ULL << *bit);
+ if (!(hdev->features & bit_mask)) {
+ features &= ~bit_mask;
+ }
+ bit++;
+ }
+ return features;
+}
+
+void vhost_ack_features(struct vhost_dev *hdev, const int *feature_bits,
+ uint64_t features)
+{
+ const int *bit = feature_bits;
+ while (*bit != VHOST_INVALID_FEATURE_BIT) {
+ uint64_t bit_mask = (1ULL << *bit);
+ if (features & bit_mask) {
+ hdev->acked_features |= bit_mask;
+ }
+ bit++;
+ }
+}
+
/* Host notifiers must be enabled at this point. */
int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice *vdev)
{
if (r < 0) {
goto fail_features;
}
- r = ioctl(hdev->control, VHOST_SET_MEM_TABLE, hdev->mem);
+ r = hdev->vhost_ops->vhost_set_mem_table(hdev, hdev->mem);
if (r < 0) {
r = -errno;
goto fail_mem;
}
if (hdev->log_enabled) {
+ uint64_t log_base;
+
hdev->log_size = vhost_get_log_size(hdev);
- hdev->log = hdev->log_size ?
- g_malloc0(hdev->log_size * sizeof *hdev->log) : NULL;
- r = ioctl(hdev->control, VHOST_SET_LOG_BASE,
- (uint64_t)(unsigned long)hdev->log);
+ hdev->log = vhost_log_get(hdev->log_size,
+ vhost_dev_log_is_shared(hdev));
+ log_base = (uintptr_t)hdev->log->log;
+ r = hdev->vhost_ops->vhost_set_log_base(hdev,
+ hdev->log_size ? log_base : 0,
+ hdev->log);
if (r < 0) {
r = -errno;
goto fail_log;
return 0;
fail_log:
+ vhost_log_put(hdev, false);
fail_vq:
while (--i >= 0) {
vhost_virtqueue_stop(hdev,
hdev->vqs + i,
hdev->vq_index + i);
}
- vhost_log_sync_range(hdev, 0, ~0x0ull);
+ vhost_log_put(hdev, true);
hdev->started = false;
- g_free(hdev->log);
hdev->log = NULL;
hdev->log_size = 0;
}
projects / qemu.git / blobdiff