2ac0f1621c
besides the existing 'shared' flags, we are going to add 'is_pmem' to qemu_ram_mmap(), which indicated the memory backend file is a persist memory. Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com> Signed-off-by: Zhang Yi <yi.z.zhang@linux.intel.com> Reviewed-by: Pankaj Gupta <pagupta@redhat.com> Message-Id: <786c46862cfeb253ee0ea2f44d62ffe76edb7fa4.1549555521.git.yi.z.zhang@linux.intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Pankaj Gupta <pagupta@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
34 lines
890 B
C
34 lines
890 B
C
#ifndef QEMU_MMAP_ALLOC_H
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#define QEMU_MMAP_ALLOC_H
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#include "qemu-common.h"
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size_t qemu_fd_getpagesize(int fd);
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size_t qemu_mempath_getpagesize(const char *mem_path);
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/**
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* qemu_ram_mmap: mmap the specified file or device.
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*
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* Parameters:
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* @fd: the file or the device to mmap
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* @size: the number of bytes to be mmaped
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* @align: if not zero, specify the alignment of the starting mapping address;
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* otherwise, the alignment in use will be determined by QEMU.
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* @shared: map has RAM_SHARED flag.
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* @is_pmem: map has RAM_PMEM flag.
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*
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* Return:
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* On success, return a pointer to the mapped area.
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* On failure, return MAP_FAILED.
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*/
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void *qemu_ram_mmap(int fd,
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size_t size,
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size_t align,
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bool shared,
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bool is_pmem);
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void qemu_ram_munmap(int fd, void *ptr, size_t size);
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#endif
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