1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Xen memory reservation utilities.
*
* Copyright (c) 2003, B Dragovic
* Copyright (c) 2003-2004, M Williamson, K Fraser
* Copyright (c) 2005 Dan M. Smith, IBM Corporation
* Copyright (c) 2010 Daniel Kiper
* Copyright (c) 2018 Oleksandr Andrushchenko, EPAM Systems Inc.
*/
#ifndef _XENMEM_RESERVATION_H
#define _XENMEM_RESERVATION_H
#include <linux/highmem.h>
#include <xen/page.h>
extern bool xen_scrub_pages;
static inline void xenmem_reservation_scrub_page(struct page *page)
{
if (xen_scrub_pages)
clear_highpage(page);
}
#ifdef CONFIG_XEN_HAVE_PVMMU
void __xenmem_reservation_va_mapping_update(unsigned long count,
struct page **pages,
xen_pfn_t *frames);
void __xenmem_reservation_va_mapping_reset(unsigned long count,
struct page **pages);
#endif
static inline void xenmem_reservation_va_mapping_update(unsigned long count,
struct page **pages,
xen_pfn_t *frames)
{
#ifdef CONFIG_XEN_HAVE_PVMMU
if (!xen_feature(XENFEAT_auto_translated_physmap))
__xenmem_reservation_va_mapping_update(count, pages, frames);
#endif
}
static inline void xenmem_reservation_va_mapping_reset(unsigned long count,
struct page **pages)
{
#ifdef CONFIG_XEN_HAVE_PVMMU
if (!xen_feature(XENFEAT_auto_translated_physmap))
__xenmem_reservation_va_mapping_reset(count, pages);
#endif
}
int xenmem_reservation_increase(int count, xen_pfn_t *frames);
int xenmem_reservation_decrease(int count, xen_pfn_t *frames);
#endif
|
