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/* 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