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Define a list of vfio devices in CPR state, in a subsection so that older QEMU can be live updated to this version. However, new QEMU will not be live updateable to old QEMU. This is acceptable because CPR is not yet commonly used, and updates to older versions are unusual. The contents of each device object will be defined by the vfio subsystem in a subsequent patch. Signed-off-by: Steve Sistare <steven.sistare@oracle.com> Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com> Link: https://lore.kernel.org/qemu-devel/1751493538-202042-14-git-send-email-steven.sistare@oracle.com Signed-off-by: Cédric Le Goater <clg@redhat.com>
54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
/*
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* Copyright (c) 2021, 2024 Oracle and/or its affiliates.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef MIGRATION_CPR_H
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#define MIGRATION_CPR_H
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#include "qapi/qapi-types-migration.h"
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#include "qemu/queue.h"
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#define MIG_MODE_NONE -1
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#define QEMU_CPR_FILE_MAGIC 0x51435052
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#define QEMU_CPR_FILE_VERSION 0x00000001
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#define CPR_STATE "CprState"
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typedef QLIST_HEAD(CprFdList, CprFd) CprFdList;
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typedef QLIST_HEAD(CprVFIODeviceList, CprVFIODevice) CprVFIODeviceList;
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typedef struct CprState {
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CprFdList fds;
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CprVFIODeviceList vfio_devices;
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} CprState;
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extern CprState cpr_state;
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void cpr_save_fd(const char *name, int id, int fd);
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void cpr_delete_fd(const char *name, int id);
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int cpr_find_fd(const char *name, int id);
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void cpr_resave_fd(const char *name, int id, int fd);
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int cpr_open_fd(const char *path, int flags, const char *name, int id,
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Error **errp);
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MigMode cpr_get_incoming_mode(void);
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void cpr_set_incoming_mode(MigMode mode);
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bool cpr_is_incoming(void);
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int cpr_state_save(MigrationChannel *channel, Error **errp);
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int cpr_state_load(MigrationChannel *channel, Error **errp);
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void cpr_state_close(void);
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struct QIOChannel *cpr_state_ioc(void);
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bool cpr_incoming_needed(void *opaque);
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int cpr_get_fd_param(const char *name, const char *fdname, int index,
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Error **errp);
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QEMUFile *cpr_transfer_output(MigrationChannel *channel, Error **errp);
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QEMUFile *cpr_transfer_input(MigrationChannel *channel, Error **errp);
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#endif
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