diff options
Diffstat (limited to 'hw/virtio/vhost.c')
| -rw-r--r-- | hw/virtio/vhost.c | 34 |
1 files changed, 18 insertions, 16 deletions
diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 774d87d98e..25fd469179 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -547,26 +547,28 @@ static void vhost_region_add_section(struct vhost_dev *dev, uintptr_t mrs_host = (uintptr_t)memory_region_get_ram_ptr(section->mr) + section->offset_within_region; RAMBlock *mrs_rb = section->mr->ram_block; - size_t mrs_page = qemu_ram_pagesize(mrs_rb); trace_vhost_region_add_section(section->mr->name, mrs_gpa, mrs_size, mrs_host); - /* Round the section to it's page size */ - /* First align the start down to a page boundary */ - uint64_t alignage = mrs_host & (mrs_page - 1); - if (alignage) { - mrs_host -= alignage; - mrs_size += alignage; - mrs_gpa -= alignage; - } - /* Now align the size up to a page boundary */ - alignage = mrs_size & (mrs_page - 1); - if (alignage) { - mrs_size += mrs_page - alignage; - } - trace_vhost_region_add_section_aligned(section->mr->name, mrs_gpa, mrs_size, - mrs_host); + if (dev->vhost_ops->backend_type == VHOST_BACKEND_TYPE_USER) { + /* Round the section to it's page size */ + /* First align the start down to a page boundary */ + size_t mrs_page = qemu_ram_pagesize(mrs_rb); + uint64_t alignage = mrs_host & (mrs_page - 1); + if (alignage) { + mrs_host -= alignage; + mrs_size += alignage; + mrs_gpa -= alignage; + } + /* Now align the size up to a page boundary */ + alignage = mrs_size & (mrs_page - 1); + if (alignage) { + mrs_size += mrs_page - alignage; + } + trace_vhost_region_add_section_aligned(section->mr->name, mrs_gpa, mrs_size, + mrs_host); + } if (dev->n_tmp_sections) { /* Since we already have at least one section, lets see if |