mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-21 16:07:57 +07:00
ae4c51a50c
Memory {increase|decrease}_reservation and VA mappings update/reset
code used in balloon driver can be made common, so other drivers can
also re-use the same functionality without open-coding.
Create a dedicated file for the shared code and export corresponding
symbols for other kernel modules.
Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
/* 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>
|
|
|
|
static inline void xenmem_reservation_scrub_page(struct page *page)
|
|
{
|
|
#ifdef CONFIG_XEN_SCRUB_PAGES
|
|
clear_highpage(page);
|
|
#endif
|
|
}
|
|
|
|
#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
|