55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
/*
|
|
* Copyright 2013 Red Hat Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* Authors: Jérôme Glisse <jglisse@redhat.com>
|
|
*/
|
|
/*
|
|
* This is a dummy driver to exercise the HMM (heterogeneous memory management)
|
|
* API of the kernel. It allows a userspace program to expose its entire address
|
|
* space through the HMM dummy driver file.
|
|
*/
|
|
#ifndef _UAPI_LINUX_HMM_DMIRROR_H
|
|
#define _UAPI_LINUX_HMM_DMIRROR_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/ioctl.h>
|
|
#include <linux/irqnr.h>
|
|
|
|
struct hmm_dmirror_read {
|
|
uint64_t addr;
|
|
uint64_t ptr;
|
|
uint64_t npages;
|
|
uint64_t cpages;
|
|
uint64_t dpages;
|
|
};
|
|
|
|
struct hmm_dmirror_write {
|
|
uint64_t addr;
|
|
uint64_t ptr;
|
|
uint64_t npages;
|
|
uint64_t cpages;
|
|
uint64_t dpages;
|
|
};
|
|
|
|
struct hmm_dmirror_migrate {
|
|
uint64_t addr;
|
|
uint64_t npages;
|
|
};
|
|
|
|
/* Expose the address space of the calling process through hmm dummy dev file */
|
|
#define HMM_DMIRROR_READ _IOWR('H', 0x00, struct hmm_dmirror_read)
|
|
#define HMM_DMIRROR_WRITE _IOWR('H', 0x01, struct hmm_dmirror_write)
|
|
#define HMM_DMIRROR_MIGRATE _IOWR('H', 0x02, struct hmm_dmirror_migrate)
|
|
|
|
#endif /* _UAPI_LINUX_HMM_DMIRROR_H */
|