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vhost: alloc shareable log

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If the backend is requires it, allocate shareable memory.

vhost_log_get() now uses 2 globals "vhost_log" and "vhost_log_shm", that
way there is a common non-shareable log and a common shareable one.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Thibaut Collet <thibaut.collet@6wind.com>
This commit is contained in:
Marc-André Lureau 2015-10-09 17:17:25 +02:00 • committed by Michael S. Tsirkin
parent 1be0ac2109
commit 15324404f6
2 changed files with 49 additions and 11 deletions
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3
include/hw/virtio/vhost.h
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@ -31,7 +31,8 @@ typedef unsigned long vhost_log_chunk_t;
struct vhost_log {
unsigned long long size;
int refcnt;
vhost_log_chunk_t log[0];
int fd;
vhost_log_chunk_t *log;
};
struct vhost_memory;