diff options
Diffstat (limited to 'migration/postcopy-ram.h')
| -rw-r--r-- | migration/postcopy-ram.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/migration/postcopy-ram.h b/migration/postcopy-ram.h index fcd53b8295..2c73d77a5c 100644 --- a/migration/postcopy-ram.h +++ b/migration/postcopy-ram.h @@ -148,6 +148,10 @@ struct PostCopyFD; /* ufd is a pointer to the struct uffd_msg *TODO: more Portable! */ typedef int (*pcfdhandler)(struct PostCopyFD *pcfd, void *ufd); +/* Notification to wake, either on place or on reception of + * a fault on something that's already arrived (race) + */ +typedef int (*pcfdwake)(struct PostCopyFD *pcfd, RAMBlock *rb, uint64_t offset); struct PostCopyFD { int fd; @@ -155,6 +159,8 @@ struct PostCopyFD { void *data; /* Handler to be called whenever we get a poll event */ pcfdhandler handler; + /* Notification to wake shared client */ + pcfdwake waker; /* A string to use in error messages */ const char *idstr; }; @@ -164,6 +170,10 @@ struct PostCopyFD { */ void postcopy_register_shared_ufd(struct PostCopyFD *pcfd); void postcopy_unregister_shared_ufd(struct PostCopyFD *pcfd); +/* Call each of the shared 'waker's registerd telling them of + * availability of a block. + */ +int postcopy_notify_shared_wake(RAMBlock *rb, uint64_t offset); /* postcopy_wake_shared: Notify a client ufd that a page is available * * Returns 0 on success |