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vhost: allow backends to filter memory sections

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This patch introduces a vhost op for vhost backends to allow
them to filter the memory sections that they can handle.

Signed-off-by: Tiwei Bie <tiwei.bie@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Tiwei Bie 2018-05-24 18:33:31 +08:00 • committed by Michael S. Tsirkin
parent 63b88968f1
commit 988a27754b
3 changed files with 22 additions and 2 deletions
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9
hw/virtio/vhost.c
View file

@ -386,7 +386,7 @@ static int vhost_verify_ring_mappings(struct vhost_dev *dev,
return r;
}
static bool vhost_section(MemoryRegionSection *section)
static bool vhost_section(struct vhost_dev *dev, MemoryRegionSection *section)
{
bool result;
bool log_dirty = memory_region_get_dirty_log_mask(section->mr) &
@ -399,6 +399,11 @@ static bool vhost_section(MemoryRegionSection *section)
*/
result &= !log_dirty;
if (result && dev->vhost_ops->vhost_backend_mem_section_filter) {
result &=
dev->vhost_ops->vhost_backend_mem_section_filter(dev, section);
}
trace_vhost_section(section->mr->name, result);
return result;
}
@ -632,7 +637,7 @@ static void vhost_region_addnop(MemoryListener *listener,
struct vhost_dev *dev = container_of(listener, struct vhost_dev,
memory_listener);
if (!vhost_section(section)) {
if (!vhost_section(dev, section)) {
return;
}
vhost_region_add_section(dev, section);