VisionFive2 Linux kernel

ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300  2) 
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300  3) /*
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300  4)  * Xen memory reservation utilities.
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300  5)  *
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300  6)  * Copyright (c) 2003, B Dragovic
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300  7)  * Copyright (c) 2003-2004, M Williamson, K Fraser
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300  8)  * Copyright (c) 2005 Dan M. Smith, IBM Corporation
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300  9)  * Copyright (c) 2010 Daniel Kiper
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 10)  * Copyright (c) 2018 Oleksandr Andrushchenko, EPAM Systems Inc.
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 11)  */
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 12) 
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 13) #ifndef _XENMEM_RESERVATION_H
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 14) #define _XENMEM_RESERVATION_H
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 15) 
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 16) #include <linux/highmem.h>
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 17) 
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 18) #include <xen/page.h>
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 19) 
197ecb3802c04 (Marek Marczykowski-Górecki 2018-09-07 18:49:08 +0200 20) extern bool xen_scrub_pages;
197ecb3802c04 (Marek Marczykowski-Górecki 2018-09-07 18:49:08 +0200 21) 
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 22) static inline void xenmem_reservation_scrub_page(struct page *page)
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 23) {
197ecb3802c04 (Marek Marczykowski-Górecki 2018-09-07 18:49:08 +0200 24) 	if (xen_scrub_pages)
197ecb3802c04 (Marek Marczykowski-Górecki 2018-09-07 18:49:08 +0200 25) 		clear_highpage(page);
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 26) }
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 27) 
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 28) #ifdef CONFIG_XEN_HAVE_PVMMU
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 29) void __xenmem_reservation_va_mapping_update(unsigned long count,
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 30) 					    struct page **pages,
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 31) 					    xen_pfn_t *frames);
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 32) 
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 33) void __xenmem_reservation_va_mapping_reset(unsigned long count,
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 34) 					   struct page **pages);
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 35) #endif
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 36) 
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 37) static inline void xenmem_reservation_va_mapping_update(unsigned long count,
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 38) 							struct page **pages,
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 39) 							xen_pfn_t *frames)
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 40) {
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 41) #ifdef CONFIG_XEN_HAVE_PVMMU
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 42) 	if (!xen_feature(XENFEAT_auto_translated_physmap))
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 43) 		__xenmem_reservation_va_mapping_update(count, pages, frames);
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 44) #endif
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 45) }
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 46) 
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 47) static inline void xenmem_reservation_va_mapping_reset(unsigned long count,
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 48) 						       struct page **pages)
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 49) {
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 50) #ifdef CONFIG_XEN_HAVE_PVMMU
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 51) 	if (!xen_feature(XENFEAT_auto_translated_physmap))
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 52) 		__xenmem_reservation_va_mapping_reset(count, pages);
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 53) #endif
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 54) }
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 55) 
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 56) int xenmem_reservation_increase(int count, xen_pfn_t *frames);
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 57) 
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 58) int xenmem_reservation_decrease(int count, xen_pfn_t *frames);
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 59) 
ae4c51a50c990 (Oleksandr Andrushchenko    2018-07-20 12:01:44 +0300 60) #endif