d2db639853
1. try to use as large page as possible on attach 2. pre-map resident remote pages on attach Change-Id: I5580682a4199e94085a9bad9ce3958a0f14cdcea
47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/* xpmem.h COPYRIGHT FUJITSU LIMITED 2017 */
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/**
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* \file xpmem.h
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* License details are found in the file LICENSE.
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* \brief
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* Structures and functions of xpmem
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* \author Yoichi Umezawa <yoichi.umezawa.qh@hitachi.com> \par
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* Copyright (C) 2016 Yoichi Umezawa
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*/
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/*
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* HISTORY
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*/
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#ifndef _XPMEM_H
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#define _XPMEM_H
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#include <process.h>
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#include <ihk/context.h>
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#define XPMEM_DEV_PATH "/dev/xpmem"
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int xpmem_open(const char *pathname,
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int flags, ihk_mc_user_context_t *ctx);
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int xpmem_openat(const char *pathname,
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int flags, ihk_mc_user_context_t *ctx);
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int xpmem_remove_process_memory_range(struct process_vm *vm,
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struct vm_range *vmr);
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int xpmem_fault_process_memory_range(struct process_vm *vm,
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struct vm_range *vmr, unsigned long vaddr, uint64_t reason);
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int xpmem_update_process_page_table(struct process_vm *vm,
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struct vm_range *vmr);
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struct xpmem_attachment {
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ihk_rwspinlock_t at_lock; /* att lock */
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unsigned long vaddr; /* starting address of seg attached */
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unsigned long at_vaddr; /* address where seg is attached */
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size_t at_size; /* size of seg attachment */
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struct vm_range *at_vmr; /* vm_range where seg is attachment */
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int flags; /* att attributes and state */
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ihk_atomic_t refcnt; /* references to att */
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struct xpmem_access_permit *ap; /* associated access permit */
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struct list_head att_list; /* atts linked to access permit */
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struct process_vm *vm; /* process_vm attached to */
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};
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#endif /* _XPMEM_H */
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