| /* 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 |