diff options
Diffstat (limited to 'hw/virtio')
| -rw-r--r-- | hw/virtio/dataplane/hostmem.c | 7 | ||||
| -rw-r--r-- | hw/virtio/vhost.c | 11 | ||||
| -rw-r--r-- | hw/virtio/virtio-balloon.c | 1 | ||||
| -rw-r--r-- | hw/virtio/virtio-pci.c | 4 |
4 files changed, 16 insertions, 7 deletions
diff --git a/hw/virtio/dataplane/hostmem.c b/hw/virtio/dataplane/hostmem.c index 7e46723eb1..901d98b8a0 100644 --- a/hw/virtio/dataplane/hostmem.c +++ b/hw/virtio/dataplane/hostmem.c @@ -64,8 +64,12 @@ out: static void hostmem_listener_commit(MemoryListener *listener) { HostMem *hostmem = container_of(listener, HostMem, listener); + int i; qemu_mutex_lock(&hostmem->current_regions_lock); + for (i = 0; i < hostmem->num_current_regions; i++) { + memory_region_unref(hostmem->current_regions[i].mr); + } g_free(hostmem->current_regions); hostmem->current_regions = hostmem->new_regions; hostmem->num_current_regions = hostmem->num_new_regions; @@ -92,8 +96,11 @@ static void hostmem_append_new_region(HostMem *hostmem, .guest_addr = section->offset_within_address_space, .size = int128_get64(section->size), .readonly = section->readonly, + .mr = section->mr, }; hostmem->num_new_regions++; + + memory_region_ref(section->mr); } static void hostmem_listener_append_region(MemoryListener *listener, diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index baf84ea0bd..8f6ab130ee 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -16,6 +16,7 @@ #include <sys/ioctl.h> #include "hw/virtio/vhost.h" #include "hw/hw.h" +#include "qemu/atomic.h" #include "qemu/range.h" #include <linux/vhost.h> #include "exec/address-spaces.h" @@ -47,11 +48,9 @@ static void vhost_dev_sync_region(struct vhost_dev *dev, addr += VHOST_LOG_CHUNK; continue; } - /* Data must be read atomically. We don't really - * need the barrier semantics of __sync - * builtins, but it's easier to use them than - * roll our own. */ - log = __sync_fetch_and_and(from, 0); + /* 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))) { hwaddr page_addr; @@ -497,6 +496,7 @@ static void vhost_region_add(MemoryListener *listener, dev->mem_sections = g_renew(MemoryRegionSection, dev->mem_sections, dev->n_mem_sections); dev->mem_sections[dev->n_mem_sections - 1] = *section; + memory_region_ref(section->mr); vhost_set_memory(listener, section, true); } @@ -512,6 +512,7 @@ static void vhost_region_del(MemoryListener *listener, } vhost_set_memory(listener, section, false); + memory_region_unref(section->mr); for (i = 0; i < dev->n_mem_sections; ++i) { if (dev->mem_sections[i].offset_within_address_space == section->offset_within_address_space) { diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c index a27051c2e7..3fa72a97b9 100644 --- a/hw/virtio/virtio-balloon.c +++ b/hw/virtio/virtio-balloon.c @@ -205,6 +205,7 @@ static void virtio_balloon_handle_output(VirtIODevice *vdev, VirtQueue *vq) addr = section.offset_within_region; balloon_page(memory_region_get_ram_ptr(section.mr) + addr, !!(vq == s->dvq)); + memory_region_unref(section.mr); } virtqueue_push(vq, &elem, offset); diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index b070b6400b..c38cfd1515 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -966,8 +966,8 @@ static void virtio_pci_device_plugged(DeviceState *d) size = 1 << qemu_fls(size); } - memory_region_init_io(&proxy->bar, &virtio_pci_config_ops, proxy, - "virtio-pci", size); + memory_region_init_io(&proxy->bar, OBJECT(proxy), &virtio_pci_config_ops, + proxy, "virtio-pci", size); pci_register_bar(&proxy->pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &proxy->bar); |