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Because we need to make sure the pmem kind memory data is synced after migration, we choose to call pmem_persist() when the migration finish. This will make sure the data of pmem is safe and will not lose if power is off. Signed-off-by: Junyan He <junyan.he@intel.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
37 lines
800 B
C
37 lines
800 B
C
/*
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* QEMU header file for libpmem.
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*
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* Copyright (c) 2018 Intel Corporation.
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*
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* Author: Haozhong Zhang <address@hidden>
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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 QEMU_PMEM_H
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#define QEMU_PMEM_H
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#ifdef CONFIG_LIBPMEM
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#include <libpmem.h>
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#else /* !CONFIG_LIBPMEM */
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static inline void *
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pmem_memcpy_persist(void *pmemdest, const void *src, size_t len)
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{
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/* If 'pmem' option is 'on', we should always have libpmem support,
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or qemu will report a error and exit, never come here. */
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g_assert_not_reached();
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return NULL;
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}
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static inline void
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pmem_persist(const void *addr, size_t len)
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{
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g_assert_not_reached();
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}
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#endif /* CONFIG_LIBPMEM */
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#endif /* !QEMU_PMEM_H */
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