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14cf11af PM |
1 | /* |
2 | * PowerPC version | |
3 | * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) | |
4 | * | |
5 | * Modifications by Paul Mackerras (PowerMac) (paulus@cs.anu.edu.au) | |
6 | * and Cort Dougan (PReP) (cort@cs.nmt.edu) | |
7 | * Copyright (C) 1996 Paul Mackerras | |
14cf11af PM |
8 | * PPC44x/36-bit changes by Matt Porter (mporter@mvista.com) |
9 | * | |
10 | * Derived from "arch/i386/mm/init.c" | |
11 | * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or | |
14 | * modify it under the terms of the GNU General Public License | |
15 | * as published by the Free Software Foundation; either version | |
16 | * 2 of the License, or (at your option) any later version. | |
17 | * | |
18 | */ | |
19 | ||
14cf11af PM |
20 | #include <linux/module.h> |
21 | #include <linux/sched.h> | |
22 | #include <linux/kernel.h> | |
23 | #include <linux/errno.h> | |
24 | #include <linux/string.h> | |
25 | #include <linux/types.h> | |
26 | #include <linux/mm.h> | |
27 | #include <linux/stddef.h> | |
28 | #include <linux/init.h> | |
29 | #include <linux/bootmem.h> | |
30 | #include <linux/highmem.h> | |
31 | #include <linux/initrd.h> | |
32 | #include <linux/pagemap.h> | |
4e8ad3e8 | 33 | #include <linux/suspend.h> |
14cf11af PM |
34 | |
35 | #include <asm/pgalloc.h> | |
36 | #include <asm/prom.h> | |
37 | #include <asm/io.h> | |
38 | #include <asm/mmu_context.h> | |
39 | #include <asm/pgtable.h> | |
40 | #include <asm/mmu.h> | |
41 | #include <asm/smp.h> | |
42 | #include <asm/machdep.h> | |
43 | #include <asm/btext.h> | |
44 | #include <asm/tlb.h> | |
7c8c6b97 PM |
45 | #include <asm/lmb.h> |
46 | #include <asm/sections.h> | |
ab1f9dac | 47 | #include <asm/vdso.h> |
14cf11af | 48 | |
14cf11af PM |
49 | #include "mmu_decl.h" |
50 | ||
51 | #ifndef CPU_FTR_COHERENT_ICACHE | |
52 | #define CPU_FTR_COHERENT_ICACHE 0 /* XXX for now */ | |
53 | #define CPU_FTR_NOEXECUTE 0 | |
54 | #endif | |
55 | ||
7c8c6b97 PM |
56 | int init_bootmem_done; |
57 | int mem_init_done; | |
cf00a8d1 | 58 | unsigned long memory_limit; |
7c8c6b97 | 59 | |
14cf11af PM |
60 | int page_is_ram(unsigned long pfn) |
61 | { | |
62 | unsigned long paddr = (pfn << PAGE_SHIFT); | |
63 | ||
64 | #ifndef CONFIG_PPC64 /* XXX for now */ | |
65 | return paddr < __pa(high_memory); | |
66 | #else | |
67 | int i; | |
68 | for (i=0; i < lmb.memory.cnt; i++) { | |
69 | unsigned long base; | |
70 | ||
71 | base = lmb.memory.region[i].base; | |
72 | ||
73 | if ((paddr >= base) && | |
74 | (paddr < (base + lmb.memory.region[i].size))) { | |
75 | return 1; | |
76 | } | |
77 | } | |
78 | ||
79 | return 0; | |
80 | #endif | |
81 | } | |
14cf11af | 82 | |
8b150478 | 83 | pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, |
14cf11af PM |
84 | unsigned long size, pgprot_t vma_prot) |
85 | { | |
86 | if (ppc_md.phys_mem_access_prot) | |
8b150478 | 87 | return ppc_md.phys_mem_access_prot(file, pfn, size, vma_prot); |
14cf11af | 88 | |
8b150478 | 89 | if (!page_is_ram(pfn)) |
14cf11af PM |
90 | vma_prot = __pgprot(pgprot_val(vma_prot) |
91 | | _PAGE_GUARDED | _PAGE_NO_CACHE); | |
92 | return vma_prot; | |
93 | } | |
94 | EXPORT_SYMBOL(phys_mem_access_prot); | |
95 | ||
23fd0775 PM |
96 | #ifdef CONFIG_MEMORY_HOTPLUG |
97 | ||
98 | void online_page(struct page *page) | |
99 | { | |
100 | ClearPageReserved(page); | |
7835e98b | 101 | init_page_count(page); |
70dc991d | 102 | __free_page(page); |
23fd0775 PM |
103 | totalram_pages++; |
104 | num_physpages++; | |
105 | } | |
106 | ||
bc02af93 YG |
107 | #ifdef CONFIG_NUMA |
108 | int memory_add_physaddr_to_nid(u64 start) | |
109 | { | |
110 | return hot_add_scn_to_nid(start); | |
111 | } | |
112 | #endif | |
113 | ||
114 | int __devinit arch_add_memory(int nid, u64 start, u64 size) | |
23fd0775 | 115 | { |
237a0989 | 116 | struct pglist_data *pgdata; |
23fd0775 PM |
117 | struct zone *zone; |
118 | unsigned long start_pfn = start >> PAGE_SHIFT; | |
119 | unsigned long nr_pages = size >> PAGE_SHIFT; | |
120 | ||
237a0989 MK |
121 | pgdata = NODE_DATA(nid); |
122 | ||
2d0eee14 | 123 | start = (unsigned long)__va(start); |
54b79248 MK |
124 | create_section_mapping(start, start + size); |
125 | ||
23fd0775 PM |
126 | /* this should work for most non-highmem platforms */ |
127 | zone = pgdata->node_zones; | |
128 | ||
129 | return __add_pages(zone, start_pfn, nr_pages); | |
23fd0775 PM |
130 | } |
131 | ||
23fd0775 PM |
132 | #endif /* CONFIG_MEMORY_HOTPLUG */ |
133 | ||
14cf11af PM |
134 | void show_mem(void) |
135 | { | |
136 | unsigned long total = 0, reserved = 0; | |
137 | unsigned long shared = 0, cached = 0; | |
138 | unsigned long highmem = 0; | |
139 | struct page *page; | |
140 | pg_data_t *pgdat; | |
141 | unsigned long i; | |
142 | ||
143 | printk("Mem-info:\n"); | |
144 | show_free_areas(); | |
145 | printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10)); | |
ec936fc5 | 146 | for_each_online_pgdat(pgdat) { |
23fd0775 PM |
147 | unsigned long flags; |
148 | pgdat_resize_lock(pgdat, &flags); | |
14cf11af | 149 | for (i = 0; i < pgdat->node_spanned_pages; i++) { |
fb6d73d3 PM |
150 | if (!pfn_valid(pgdat->node_start_pfn + i)) |
151 | continue; | |
14cf11af PM |
152 | page = pgdat_page_nr(pgdat, i); |
153 | total++; | |
154 | if (PageHighMem(page)) | |
155 | highmem++; | |
156 | if (PageReserved(page)) | |
157 | reserved++; | |
158 | else if (PageSwapCache(page)) | |
159 | cached++; | |
160 | else if (page_count(page)) | |
161 | shared += page_count(page) - 1; | |
162 | } | |
23fd0775 | 163 | pgdat_resize_unlock(pgdat, &flags); |
14cf11af PM |
164 | } |
165 | printk("%ld pages of RAM\n", total); | |
166 | #ifdef CONFIG_HIGHMEM | |
167 | printk("%ld pages of HIGHMEM\n", highmem); | |
168 | #endif | |
169 | printk("%ld reserved pages\n", reserved); | |
170 | printk("%ld pages shared\n", shared); | |
171 | printk("%ld pages swap cached\n", cached); | |
172 | } | |
173 | ||
7c8c6b97 PM |
174 | /* |
175 | * Initialize the bootmem system and give it all the memory we | |
176 | * have available. If we are using highmem, we only put the | |
177 | * lowmem into the bootmem system. | |
178 | */ | |
179 | #ifndef CONFIG_NEED_MULTIPLE_NODES | |
180 | void __init do_init_bootmem(void) | |
181 | { | |
182 | unsigned long i; | |
183 | unsigned long start, bootmap_pages; | |
184 | unsigned long total_pages; | |
185 | int boot_mapsize; | |
186 | ||
187 | max_pfn = total_pages = lmb_end_of_DRAM() >> PAGE_SHIFT; | |
188 | #ifdef CONFIG_HIGHMEM | |
189 | total_pages = total_lowmem >> PAGE_SHIFT; | |
190 | #endif | |
191 | ||
192 | /* | |
193 | * Find an area to use for the bootmem bitmap. Calculate the size of | |
194 | * bitmap required as (Total Memory) / PAGE_SIZE / BITS_PER_BYTE. | |
195 | * Add 1 additional page in case the address isn't page-aligned. | |
196 | */ | |
197 | bootmap_pages = bootmem_bootmap_pages(total_pages); | |
198 | ||
199 | start = lmb_alloc(bootmap_pages << PAGE_SHIFT, PAGE_SIZE); | |
7c8c6b97 PM |
200 | |
201 | boot_mapsize = init_bootmem(start >> PAGE_SHIFT, total_pages); | |
202 | ||
c67c3cb4 MG |
203 | /* Add active regions with valid PFNs */ |
204 | for (i = 0; i < lmb.memory.cnt; i++) { | |
205 | unsigned long start_pfn, end_pfn; | |
206 | start_pfn = lmb.memory.region[i].base >> PAGE_SHIFT; | |
207 | end_pfn = start_pfn + lmb_size_pages(&lmb.memory, i); | |
208 | add_active_range(0, start_pfn, end_pfn); | |
209 | } | |
210 | ||
7c8c6b97 PM |
211 | /* Add all physical memory to the bootmem map, mark each area |
212 | * present. | |
213 | */ | |
7c8c6b97 | 214 | #ifdef CONFIG_HIGHMEM |
c67c3cb4 MG |
215 | free_bootmem_with_active_regions(0, total_lowmem >> PAGE_SHIFT); |
216 | #else | |
217 | free_bootmem_with_active_regions(0, max_pfn); | |
7c8c6b97 | 218 | #endif |
7c8c6b97 PM |
219 | |
220 | /* reserve the sections we're already using */ | |
221 | for (i = 0; i < lmb.reserved.cnt; i++) | |
222 | reserve_bootmem(lmb.reserved.region[i].base, | |
223 | lmb_size_bytes(&lmb.reserved, i)); | |
224 | ||
225 | /* XXX need to clip this if using highmem? */ | |
c67c3cb4 MG |
226 | sparse_memory_present_with_active_regions(0); |
227 | ||
7c8c6b97 PM |
228 | init_bootmem_done = 1; |
229 | } | |
230 | ||
4e8ad3e8 JB |
231 | /* mark pages that don't exist as nosave */ |
232 | static int __init mark_nonram_nosave(void) | |
233 | { | |
234 | unsigned long lmb_next_region_start_pfn, | |
235 | lmb_region_max_pfn; | |
236 | int i; | |
237 | ||
238 | for (i = 0; i < lmb.memory.cnt - 1; i++) { | |
239 | lmb_region_max_pfn = | |
240 | (lmb.memory.region[i].base >> PAGE_SHIFT) + | |
241 | (lmb.memory.region[i].size >> PAGE_SHIFT); | |
242 | lmb_next_region_start_pfn = | |
243 | lmb.memory.region[i+1].base >> PAGE_SHIFT; | |
244 | ||
245 | if (lmb_region_max_pfn < lmb_next_region_start_pfn) | |
246 | register_nosave_region(lmb_region_max_pfn, | |
247 | lmb_next_region_start_pfn); | |
248 | } | |
249 | ||
250 | return 0; | |
251 | } | |
252 | ||
7c8c6b97 PM |
253 | /* |
254 | * paging_init() sets up the page tables - in fact we've already done this. | |
255 | */ | |
256 | void __init paging_init(void) | |
257 | { | |
7c8c6b97 PM |
258 | unsigned long total_ram = lmb_phys_mem_size(); |
259 | unsigned long top_of_ram = lmb_end_of_DRAM(); | |
c67c3cb4 | 260 | unsigned long max_zone_pfns[MAX_NR_ZONES]; |
7c8c6b97 PM |
261 | |
262 | #ifdef CONFIG_HIGHMEM | |
263 | map_page(PKMAP_BASE, 0, 0); /* XXX gross */ | |
5453e772 BH |
264 | pkmap_page_table = pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k |
265 | (PKMAP_BASE), PKMAP_BASE), PKMAP_BASE), PKMAP_BASE); | |
7c8c6b97 | 266 | map_page(KMAP_FIX_BEGIN, 0, 0); /* XXX gross */ |
5453e772 BH |
267 | kmap_pte = pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k |
268 | (KMAP_FIX_BEGIN), KMAP_FIX_BEGIN), KMAP_FIX_BEGIN), | |
269 | KMAP_FIX_BEGIN); | |
7c8c6b97 PM |
270 | kmap_prot = PAGE_KERNEL; |
271 | #endif /* CONFIG_HIGHMEM */ | |
272 | ||
e110b281 | 273 | printk(KERN_DEBUG "Top of RAM: 0x%lx, Total RAM: 0x%lx\n", |
7c8c6b97 | 274 | top_of_ram, total_ram); |
e110b281 | 275 | printk(KERN_DEBUG "Memory hole size: %ldMB\n", |
7c8c6b97 | 276 | (top_of_ram - total_ram) >> 20); |
6391af17 | 277 | memset(max_zone_pfns, 0, sizeof(max_zone_pfns)); |
7c8c6b97 | 278 | #ifdef CONFIG_HIGHMEM |
6391af17 MG |
279 | max_zone_pfns[ZONE_DMA] = total_lowmem >> PAGE_SHIFT; |
280 | max_zone_pfns[ZONE_HIGHMEM] = top_of_ram >> PAGE_SHIFT; | |
7c8c6b97 | 281 | #else |
6391af17 | 282 | max_zone_pfns[ZONE_DMA] = top_of_ram >> PAGE_SHIFT; |
c67c3cb4 MG |
283 | #endif |
284 | free_area_init_nodes(max_zone_pfns); | |
4e8ad3e8 JB |
285 | |
286 | mark_nonram_nosave(); | |
7c8c6b97 PM |
287 | } |
288 | #endif /* ! CONFIG_NEED_MULTIPLE_NODES */ | |
289 | ||
290 | void __init mem_init(void) | |
291 | { | |
292 | #ifdef CONFIG_NEED_MULTIPLE_NODES | |
293 | int nid; | |
294 | #endif | |
295 | pg_data_t *pgdat; | |
296 | unsigned long i; | |
297 | struct page *page; | |
298 | unsigned long reservedpages = 0, codesize, initsize, datasize, bsssize; | |
299 | ||
fb6d73d3 | 300 | num_physpages = lmb.memory.size >> PAGE_SHIFT; |
7c8c6b97 PM |
301 | high_memory = (void *) __va(max_low_pfn * PAGE_SIZE); |
302 | ||
303 | #ifdef CONFIG_NEED_MULTIPLE_NODES | |
304 | for_each_online_node(nid) { | |
305 | if (NODE_DATA(nid)->node_spanned_pages != 0) { | |
c258dd40 | 306 | printk("freeing bootmem node %d\n", nid); |
7c8c6b97 PM |
307 | totalram_pages += |
308 | free_all_bootmem_node(NODE_DATA(nid)); | |
309 | } | |
310 | } | |
311 | #else | |
fb6d73d3 | 312 | max_mapnr = max_pfn; |
7c8c6b97 PM |
313 | totalram_pages += free_all_bootmem(); |
314 | #endif | |
ec936fc5 | 315 | for_each_online_pgdat(pgdat) { |
7c8c6b97 | 316 | for (i = 0; i < pgdat->node_spanned_pages; i++) { |
fb6d73d3 PM |
317 | if (!pfn_valid(pgdat->node_start_pfn + i)) |
318 | continue; | |
7c8c6b97 PM |
319 | page = pgdat_page_nr(pgdat, i); |
320 | if (PageReserved(page)) | |
321 | reservedpages++; | |
322 | } | |
323 | } | |
324 | ||
325 | codesize = (unsigned long)&_sdata - (unsigned long)&_stext; | |
bcb35576 | 326 | datasize = (unsigned long)&_edata - (unsigned long)&_sdata; |
7c8c6b97 PM |
327 | initsize = (unsigned long)&__init_end - (unsigned long)&__init_begin; |
328 | bsssize = (unsigned long)&__bss_stop - (unsigned long)&__bss_start; | |
329 | ||
330 | #ifdef CONFIG_HIGHMEM | |
331 | { | |
332 | unsigned long pfn, highmem_mapnr; | |
333 | ||
334 | highmem_mapnr = total_lowmem >> PAGE_SHIFT; | |
335 | for (pfn = highmem_mapnr; pfn < max_mapnr; ++pfn) { | |
336 | struct page *page = pfn_to_page(pfn); | |
337 | ||
338 | ClearPageReserved(page); | |
7835e98b | 339 | init_page_count(page); |
7c8c6b97 PM |
340 | __free_page(page); |
341 | totalhigh_pages++; | |
342 | } | |
343 | totalram_pages += totalhigh_pages; | |
e110b281 | 344 | printk(KERN_DEBUG "High memory: %luk\n", |
7c8c6b97 PM |
345 | totalhigh_pages << (PAGE_SHIFT-10)); |
346 | } | |
347 | #endif /* CONFIG_HIGHMEM */ | |
348 | ||
349 | printk(KERN_INFO "Memory: %luk/%luk available (%luk kernel code, " | |
350 | "%luk reserved, %luk data, %luk bss, %luk init)\n", | |
351 | (unsigned long)nr_free_pages() << (PAGE_SHIFT-10), | |
352 | num_physpages << (PAGE_SHIFT-10), | |
353 | codesize >> 10, | |
354 | reservedpages << (PAGE_SHIFT-10), | |
355 | datasize >> 10, | |
356 | bsssize >> 10, | |
357 | initsize >> 10); | |
358 | ||
359 | mem_init_done = 1; | |
7c8c6b97 PM |
360 | } |
361 | ||
14cf11af PM |
362 | /* |
363 | * This is called when a page has been modified by the kernel. | |
364 | * It just marks the page as not i-cache clean. We do the i-cache | |
365 | * flush later when the page is given to a user process, if necessary. | |
366 | */ | |
367 | void flush_dcache_page(struct page *page) | |
368 | { | |
369 | if (cpu_has_feature(CPU_FTR_COHERENT_ICACHE)) | |
370 | return; | |
371 | /* avoid an atomic op if possible */ | |
372 | if (test_bit(PG_arch_1, &page->flags)) | |
373 | clear_bit(PG_arch_1, &page->flags); | |
374 | } | |
375 | EXPORT_SYMBOL(flush_dcache_page); | |
376 | ||
377 | void flush_dcache_icache_page(struct page *page) | |
378 | { | |
379 | #ifdef CONFIG_BOOKE | |
380 | void *start = kmap_atomic(page, KM_PPC_SYNC_ICACHE); | |
381 | __flush_dcache_icache(start); | |
382 | kunmap_atomic(start, KM_PPC_SYNC_ICACHE); | |
ab1f9dac | 383 | #elif defined(CONFIG_8xx) || defined(CONFIG_PPC64) |
14cf11af PM |
384 | /* On 8xx there is no need to kmap since highmem is not supported */ |
385 | __flush_dcache_icache(page_address(page)); | |
386 | #else | |
387 | __flush_dcache_icache_phys(page_to_pfn(page) << PAGE_SHIFT); | |
388 | #endif | |
389 | ||
390 | } | |
391 | void clear_user_page(void *page, unsigned long vaddr, struct page *pg) | |
392 | { | |
393 | clear_page(page); | |
394 | ||
14cf11af PM |
395 | /* |
396 | * We shouldnt have to do this, but some versions of glibc | |
397 | * require it (ld.so assumes zero filled pages are icache clean) | |
398 | * - Anton | |
399 | */ | |
09f5dc44 | 400 | flush_dcache_page(pg); |
14cf11af PM |
401 | } |
402 | EXPORT_SYMBOL(clear_user_page); | |
403 | ||
404 | void copy_user_page(void *vto, void *vfrom, unsigned long vaddr, | |
405 | struct page *pg) | |
406 | { | |
407 | copy_page(vto, vfrom); | |
408 | ||
409 | /* | |
410 | * We should be able to use the following optimisation, however | |
411 | * there are two problems. | |
412 | * Firstly a bug in some versions of binutils meant PLT sections | |
413 | * were not marked executable. | |
414 | * Secondly the first word in the GOT section is blrl, used | |
415 | * to establish the GOT address. Until recently the GOT was | |
416 | * not marked executable. | |
417 | * - Anton | |
418 | */ | |
419 | #if 0 | |
420 | if (!vma->vm_file && ((vma->vm_flags & VM_EXEC) == 0)) | |
421 | return; | |
422 | #endif | |
423 | ||
09f5dc44 | 424 | flush_dcache_page(pg); |
14cf11af PM |
425 | } |
426 | ||
427 | void flush_icache_user_range(struct vm_area_struct *vma, struct page *page, | |
428 | unsigned long addr, int len) | |
429 | { | |
430 | unsigned long maddr; | |
431 | ||
432 | maddr = (unsigned long) kmap(page) + (addr & ~PAGE_MASK); | |
433 | flush_icache_range(maddr, maddr + len); | |
434 | kunmap(page); | |
435 | } | |
436 | EXPORT_SYMBOL(flush_icache_user_range); | |
437 | ||
438 | /* | |
439 | * This is called at the end of handling a user page fault, when the | |
440 | * fault has been handled by updating a PTE in the linux page tables. | |
441 | * We use it to preload an HPTE into the hash table corresponding to | |
442 | * the updated linux PTE. | |
443 | * | |
01edcd89 | 444 | * This must always be called with the pte lock held. |
14cf11af PM |
445 | */ |
446 | void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, | |
447 | pte_t pte) | |
448 | { | |
3c726f8d BH |
449 | #ifdef CONFIG_PPC_STD_MMU |
450 | unsigned long access = 0, trap; | |
14cf11af | 451 | #endif |
3c726f8d | 452 | unsigned long pfn = pte_pfn(pte); |
14cf11af PM |
453 | |
454 | /* handle i-cache coherency */ | |
455 | if (!cpu_has_feature(CPU_FTR_COHERENT_ICACHE) && | |
456 | !cpu_has_feature(CPU_FTR_NOEXECUTE) && | |
457 | pfn_valid(pfn)) { | |
458 | struct page *page = pfn_to_page(pfn); | |
dbbb06b7 VB |
459 | #ifdef CONFIG_8xx |
460 | /* On 8xx, cache control instructions (particularly | |
461 | * "dcbst" from flush_dcache_icache) fault as write | |
462 | * operation if there is an unpopulated TLB entry | |
463 | * for the address in question. To workaround that, | |
464 | * we invalidate the TLB here, thus avoiding dcbst | |
465 | * misbehaviour. | |
466 | */ | |
467 | _tlbie(address); | |
468 | #endif | |
14cf11af PM |
469 | if (!PageReserved(page) |
470 | && !test_bit(PG_arch_1, &page->flags)) { | |
471 | if (vma->vm_mm == current->active_mm) { | |
14cf11af PM |
472 | __flush_dcache_icache((void *) address); |
473 | } else | |
474 | flush_dcache_icache_page(page); | |
475 | set_bit(PG_arch_1, &page->flags); | |
476 | } | |
477 | } | |
478 | ||
479 | #ifdef CONFIG_PPC_STD_MMU | |
480 | /* We only want HPTEs for linux PTEs that have _PAGE_ACCESSED set */ | |
481 | if (!pte_young(pte) || address >= TASK_SIZE) | |
482 | return; | |
14cf11af | 483 | |
3c726f8d BH |
484 | /* We try to figure out if we are coming from an instruction |
485 | * access fault and pass that down to __hash_page so we avoid | |
486 | * double-faulting on execution of fresh text. We have to test | |
487 | * for regs NULL since init will get here first thing at boot | |
488 | * | |
489 | * We also avoid filling the hash if not coming from a fault | |
490 | */ | |
491 | if (current->thread.regs == NULL) | |
14cf11af | 492 | return; |
3c726f8d BH |
493 | trap = TRAP(current->thread.regs); |
494 | if (trap == 0x400) | |
495 | access |= _PAGE_EXEC; | |
496 | else if (trap != 0x300) | |
497 | return; | |
498 | hash_preload(vma->vm_mm, address, access, trap); | |
499 | #endif /* CONFIG_PPC_STD_MMU */ | |
14cf11af | 500 | } |