diff options
Diffstat (limited to 'contrib')
| -rw-r--r-- | contrib/libvhost-user/libvhost-user.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/contrib/libvhost-user/libvhost-user.c b/contrib/libvhost-user/libvhost-user.c index e53b1953df..b2de8ed0a8 100644 --- a/contrib/libvhost-user/libvhost-user.c +++ b/contrib/libvhost-user/libvhost-user.c @@ -449,6 +449,55 @@ vu_reset_device_exec(VuDev *dev, VhostUserMsg *vmsg) } static bool +vu_set_mem_table_exec_postcopy(VuDev *dev, VhostUserMsg *vmsg) +{ + int i; + VhostUserMemory *memory = &vmsg->payload.memory; + dev->nregions = memory->nregions; + /* TODO: Postcopy specific code */ + DPRINT("Nregions: %d\n", memory->nregions); + for (i = 0; i < dev->nregions; i++) { + void *mmap_addr; + VhostUserMemoryRegion *msg_region = &memory->regions[i]; + VuDevRegion *dev_region = &dev->regions[i]; + + DPRINT("Region %d\n", i); + DPRINT(" guest_phys_addr: 0x%016"PRIx64"\n", + msg_region->guest_phys_addr); + DPRINT(" memory_size: 0x%016"PRIx64"\n", + msg_region->memory_size); + DPRINT(" userspace_addr 0x%016"PRIx64"\n", + msg_region->userspace_addr); + DPRINT(" mmap_offset 0x%016"PRIx64"\n", + msg_region->mmap_offset); + + dev_region->gpa = msg_region->guest_phys_addr; + dev_region->size = msg_region->memory_size; + dev_region->qva = msg_region->userspace_addr; + dev_region->mmap_offset = msg_region->mmap_offset; + + /* We don't use offset argument of mmap() since the + * mapped address has to be page aligned, and we use huge + * pages. */ + mmap_addr = mmap(0, dev_region->size + dev_region->mmap_offset, + PROT_READ | PROT_WRITE, MAP_SHARED, + vmsg->fds[i], 0); + + if (mmap_addr == MAP_FAILED) { + vu_panic(dev, "region mmap error: %s", strerror(errno)); + } else { + dev_region->mmap_addr = (uint64_t)(uintptr_t)mmap_addr; + DPRINT(" mmap_addr: 0x%016"PRIx64"\n", + dev_region->mmap_addr); + } + + close(vmsg->fds[i]); + } + + return false; +} + +static bool vu_set_mem_table_exec(VuDev *dev, VhostUserMsg *vmsg) { int i; @@ -464,6 +513,10 @@ vu_set_mem_table_exec(VuDev *dev, VhostUserMsg *vmsg) } dev->nregions = memory->nregions; + if (dev->postcopy_listening) { + return vu_set_mem_table_exec_postcopy(dev, vmsg); + } + DPRINT("Nregions: %d\n", memory->nregions); for (i = 0; i < dev->nregions; i++) { void *mmap_addr; |