1 /* SPDX-License-Identifier: GPL-2.0 */ <<
2 #ifndef _XEN_PAGE_H 1 #ifndef _XEN_PAGE_H
3 #define _XEN_PAGE_H 2 #define _XEN_PAGE_H
4 3
5 #include <asm/page.h> <<
6 <<
7 /* The hypercall interface supports only 4KB p <<
8 #define XEN_PAGE_SHIFT 12 <<
9 #define XEN_PAGE_SIZE (_AC(1, UL) << XEN_PAG <<
10 #define XEN_PAGE_MASK (~(XEN_PAGE_SIZE-1)) <<
11 #define xen_offset_in_page(p) ((unsigned lon <<
12 <<
13 /* <<
14 * We assume that PAGE_SIZE is a multiple of X <<
15 * XXX: Add a BUILD_BUG_ON? <<
16 */ <<
17 <<
18 #define xen_pfn_to_page(xen_pfn) \ <<
19 (pfn_to_page((unsigned long)(xen_pfn) <<
20 #define page_to_xen_pfn(page) \ <<
21 ((page_to_pfn(page)) << (PAGE_SHIFT - <<
22 <<
23 #define XEN_PFN_PER_PAGE (PAGE_SIZE / X <<
24 <<
25 #define XEN_PFN_DOWN(x) ((x) >> XEN_PAGE_SHIFT <<
26 #define XEN_PFN_UP(x) (((x) + XEN_PAGE_SIZE- <<
27 <<
28 #include <asm/xen/page.h> 4 #include <asm/xen/page.h>
29 5
30 /* Return the GFN associated to the first 4KB <<
31 static inline unsigned long xen_page_to_gfn(st <<
32 { <<
33 return pfn_to_gfn(page_to_xen_pfn(page <<
34 } <<
35 <<
36 struct xen_memory_region { 6 struct xen_memory_region {
37 unsigned long start_pfn; !! 7 phys_addr_t start;
38 unsigned long n_pfns; !! 8 phys_addr_t size;
39 }; 9 };
40 10
41 #define XEN_EXTRA_MEM_MAX_REGIONS 128 /* == E8 !! 11 #define XEN_EXTRA_MEM_MAX_REGIONS 128 /* == E820MAX */
42 12
43 extern __initdata 13 extern __initdata
44 struct xen_memory_region xen_extra_mem[XEN_EXT 14 struct xen_memory_region xen_extra_mem[XEN_EXTRA_MEM_MAX_REGIONS];
45 15
46 extern unsigned long xen_released_pages; 16 extern unsigned long xen_released_pages;
47 17
48 #endif /* _XEN_PAGE_H */ 18 #endif /* _XEN_PAGE_H */
49 19
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