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migration: cpr helpers

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Add the cpr_incoming_needed, cpr_open_fd, and cpr_resave_fd helpers,
for use when adding cpr support for vfio and iommufd.

Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/1749569991-25171-2-git-send-email-steven.sistare@oracle.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit is contained in:
Steve Sistare 2025-06-10 08:39:14 -07:00 • committed by Cédric Le Goater
parent a574b06144
commit f95fd60ac1
2 changed files with 41 additions and 0 deletions
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5
include/migration/cpr.h
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@ -18,6 +18,9 @@
void cpr_save_fd(const char *name, int id, int fd);
void cpr_delete_fd(const char *name, int id);
int cpr_find_fd(const char *name, int id);
void cpr_resave_fd(const char *name, int id, int fd);
int cpr_open_fd(const char *path, int flags, const char *name, int id,
Error **errp);
MigMode cpr_get_incoming_mode(void);
void cpr_set_incoming_mode(MigMode mode);
@ -28,6 +31,8 @@ int cpr_state_load(MigrationChannel *channel, Error **errp);
void cpr_state_close(void);
struct QIOChannel *cpr_state_ioc(void);
bool cpr_incoming_needed(void *opaque);
QEMUFile *cpr_transfer_output(MigrationChannel *channel, Error **errp);
QEMUFile *cpr_transfer_input(MigrationChannel *channel, Error **errp);