ia64/linux-2.6.18-xen.hg

view include/asm-m68k/sun3_pgalloc.h @ 452:c7ed6fe5dca0

kexec: dont initialise regions in reserve_memory()

There is no need to initialise efi_memmap_res and boot_param_res in
reserve_memory() for the initial xen domain as it is done in
machine_kexec_setup_resources() using values from the kexec hypercall.

Signed-off-by: Simon Horman <horms@verge.net.au>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Feb 28 10:55:18 2008 +0000 (2008-02-28)
parents 831230e53067
children
line source
1 /* sun3_pgalloc.h --
2 * reorganization around 2.3.39, routines moved from sun3_pgtable.h
3 *
4 *
5 * 02/27/2002 -- Modified to support "highpte" implementation in 2.5.5 (Sam)
6 *
7 * moved 1/26/2000 Sam Creasey
8 */
10 #ifndef _SUN3_PGALLOC_H
11 #define _SUN3_PGALLOC_H
13 #include <asm/tlb.h>
15 /* FIXME - when we get this compiling */
16 /* erm, now that it's compiling, what do we do with it? */
17 #define _KERNPG_TABLE 0
19 extern const char bad_pmd_string[];
21 #define pmd_alloc_one(mm,address) ({ BUG(); ((pmd_t *)2); })
24 static inline void pte_free_kernel(pte_t * pte)
25 {
26 free_page((unsigned long) pte);
27 }
29 static inline void pte_free(struct page *page)
30 {
31 __free_page(page);
32 }
34 #define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
36 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
37 unsigned long address)
38 {
39 unsigned long page = __get_free_page(GFP_KERNEL|__GFP_REPEAT);
41 if (!page)
42 return NULL;
44 memset((void *)page, 0, PAGE_SIZE);
45 return (pte_t *) (page);
46 }
48 static inline struct page *pte_alloc_one(struct mm_struct *mm,
49 unsigned long address)
50 {
51 struct page *page = alloc_pages(GFP_KERNEL|__GFP_REPEAT, 0);
53 if (page == NULL)
54 return NULL;
56 clear_highpage(page);
57 return page;
59 }
61 static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
62 {
63 pmd_val(*pmd) = __pa((unsigned long)pte);
64 }
66 static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *page)
67 {
68 pmd_val(*pmd) = __pa((unsigned long)page_address(page));
69 }
71 /*
72 * allocating and freeing a pmd is trivial: the 1-entry pmd is
73 * inside the pgd, so has no extra memory associated with it.
74 */
75 #define pmd_free(x) do { } while (0)
76 #define __pmd_free_tlb(tlb, x) do { } while (0)
78 static inline void pgd_free(pgd_t * pgd)
79 {
80 free_page((unsigned long) pgd);
81 }
83 static inline pgd_t * pgd_alloc(struct mm_struct *mm)
84 {
85 pgd_t *new_pgd;
87 new_pgd = (pgd_t *)get_zeroed_page(GFP_KERNEL);
88 memcpy(new_pgd, swapper_pg_dir, PAGE_SIZE);
89 memset(new_pgd, 0, (PAGE_OFFSET >> PGDIR_SHIFT));
90 return new_pgd;
91 }
93 #define pgd_populate(mm, pmd, pte) BUG()
95 #endif /* SUN3_PGALLOC_H */