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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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11
hw/virtio/vhost-user.c
View file

@ -1620,6 +1620,16 @@ vhost_user_crypto_close_session(struct vhost_dev *dev, uint64_t session_id)
return 0;
}
static bool vhost_user_mem_section_filter(struct vhost_dev *dev,
MemoryRegionSection *section)
{
bool result;
result = memory_region_get_fd(section->mr) >= 0;
return result;
}
const VhostOps user_ops = {
.backend_type = VHOST_BACKEND_TYPE_USER,
.vhost_backend_init = vhost_user_init,
@ -1650,4 +1660,5 @@ const VhostOps user_ops = {
.vhost_set_config = vhost_user_set_config,
.vhost_crypto_create_session = vhost_user_crypto_create_session,
.vhost_crypto_close_session = vhost_user_crypto_close_session,
.vhost_backend_mem_section_filter = vhost_user_mem_section_filter,
};