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60 lines
1.5 KiB
60 lines
1.5 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Xen memory reservation utilities. |
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* |
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* Copyright (c) 2003, B Dragovic |
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* Copyright (c) 2003-2004, M Williamson, K Fraser |
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* Copyright (c) 2005 Dan M. Smith, IBM Corporation |
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* Copyright (c) 2010 Daniel Kiper |
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* Copyright (c) 2018 Oleksandr Andrushchenko, EPAM Systems Inc. |
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*/ |
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#ifndef _XENMEM_RESERVATION_H |
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#define _XENMEM_RESERVATION_H |
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#include <linux/highmem.h> |
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#include <xen/page.h> |
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extern bool xen_scrub_pages; |
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static inline void xenmem_reservation_scrub_page(struct page *page) |
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{ |
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if (xen_scrub_pages) |
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clear_highpage(page); |
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} |
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#ifdef CONFIG_XEN_HAVE_PVMMU |
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void __xenmem_reservation_va_mapping_update(unsigned long count, |
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struct page **pages, |
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xen_pfn_t *frames); |
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void __xenmem_reservation_va_mapping_reset(unsigned long count, |
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struct page **pages); |
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#endif |
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static inline void xenmem_reservation_va_mapping_update(unsigned long count, |
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struct page **pages, |
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xen_pfn_t *frames) |
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{ |
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#ifdef CONFIG_XEN_HAVE_PVMMU |
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if (!xen_feature(XENFEAT_auto_translated_physmap)) |
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__xenmem_reservation_va_mapping_update(count, pages, frames); |
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#endif |
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} |
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static inline void xenmem_reservation_va_mapping_reset(unsigned long count, |
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struct page **pages) |
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{ |
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#ifdef CONFIG_XEN_HAVE_PVMMU |
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if (!xen_feature(XENFEAT_auto_translated_physmap)) |
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__xenmem_reservation_va_mapping_reset(count, pages); |
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#endif |
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} |
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int xenmem_reservation_increase(int count, xen_pfn_t *frames); |
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int xenmem_reservation_decrease(int count, xen_pfn_t *frames); |
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#endif
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