b8fc99d9d6
Migration stream is a TDX concept and it is analogous to a "channel" in the TDX module for migration data export and import. The default migration flow (i.e. with multifd disabled) supports 1 channel to migrate data, so for the current tdx migration only 1 migration stream is implemented. In KVM, the migration stream is supported via building a piece of memory shared to QEMU to map, so the QEMU side TdxMigStream includes the pointers which will be set to mapped memory. Signed-off-by: Wei Wang <wei.w.wang@intel.com>
53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
/*
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* QEMU Migration for Confidential Guest Support
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*
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* Copyright (C) 2022 Intel Corp.
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*
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* Authors:
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* Wei Wang <wei.w.wang@intel.com>
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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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*/
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#ifndef QEMU_MIGRATION_CGS_H
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#define QEMU_MIGRATION_CGS_H
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#include "qemu/osdep.h"
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#include "migration.h"
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typedef struct CgsMig {
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bool (*is_ready)(void);
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int (*savevm_state_setup)(void);
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int (*savevm_state_start)(QEMUFile *f);
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long (*savevm_state_ram_start_epoch)(QEMUFile *f);
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long (*savevm_state_ram)(QEMUFile *f,
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hwaddr *gfns,
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uint64_t gfn_num);
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int (*savevm_state_downtime)(void);
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int (*savevm_state_end)(QEMUFile *f);
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int (*savevm_state_ram_cancel)(hwaddr gfn_end);
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void (*savevm_state_cleanup)(void);
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int (*loadvm_state_setup)(void);
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int (*loadvm_state)(QEMUFile *f);
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void (*loadvm_state_cleanup)(void);
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} CgsMig;
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bool cgs_mig_is_ready(void);
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int cgs_mig_savevm_state_setup(QEMUFile *f);
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int cgs_mig_savevm_state_start(QEMUFile *f);
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long cgs_ram_save_start_epoch(QEMUFile *f);
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long cgs_mig_savevm_state_ram(QEMUFile *f, RAMBlock *block, ram_addr_t offset,
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hwaddr *gfns, uint64_t gfn_num);
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int cgs_mig_savevm_state_downtime(QEMUFile *f);
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int cgs_mig_savevm_state_end(QEMUFile *f);
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int cgs_mig_savevm_state_ram_cancel(QEMUFile *f, hwaddr gfn_end);
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void cgs_mig_savevm_state_cleanup(void);
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int cgs_mig_loadvm_state_setup(QEMUFile *f);
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int cgs_mig_loadvm_state(QEMUFile *f);
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void cgs_mig_loadvm_state_cleanup(void);
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void tdx_mig_init(CgsMig *cgs_mig, uint32_t nr_channels);
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#endif
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