motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-04 00:03:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

postcopy: Allow registering of fd handler

Browse source 
Allow other userfaultfd's to be registered into the fault thread
so that handlers for shared memory can get responses.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert 2018-03-12 17:21:04 +00:00 • committed by Michael S. Tsirkin
parent 2a84ffc0be
commit 00fa4fc85b
5 changed files with 186 additions and 52 deletions
Download patch file Download diff file Expand all files Collapse all files

21
migration/postcopy-ram.h
View file

@ -143,4 +143,25 @@ void postcopy_remove_notifier(NotifierWithReturn *n);
/* Call the notifier list set by postcopy_add_start_notifier */
int postcopy_notify(enum PostcopyNotifyReason reason, Error **errp);
struct PostCopyFD;
/* ufd is a pointer to the struct uffd_msg *TODO: more Portable! */
typedef int (*pcfdhandler)(struct PostCopyFD *pcfd, void *ufd);
struct PostCopyFD {
int fd;
/* Data to pass to handler */
void *data;
/* Handler to be called whenever we get a poll event */
pcfdhandler handler;
/* A string to use in error messages */
const char *idstr;
};
/* Register a userfaultfd owned by an external process for
* shared memory.
*/
void postcopy_register_shared_ufd(struct PostCopyFD *pcfd);
void postcopy_unregister_shared_ufd(struct PostCopyFD *pcfd);
#endif