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Commit | Line | Data |
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5ead97c8 JF |
1 | /* |
2 | * Machine specific setup for xen | |
3 | * | |
4 | * Jeremy Fitzhardinge <jeremy@xensource.com>, XenSource Inc, 2007 | |
5 | */ | |
6 | ||
7 | #include <linux/module.h> | |
8 | #include <linux/sched.h> | |
9 | #include <linux/mm.h> | |
10 | #include <linux/pm.h> | |
a9ce6bc1 | 11 | #include <linux/memblock.h> |
d91ee586 | 12 | #include <linux/cpuidle.h> |
48cdd828 | 13 | #include <linux/cpufreq.h> |
5ead97c8 JF |
14 | |
15 | #include <asm/elf.h> | |
6c3652ef | 16 | #include <asm/vdso.h> |
5ead97c8 JF |
17 | #include <asm/e820.h> |
18 | #include <asm/setup.h> | |
b792c755 | 19 | #include <asm/acpi.h> |
5ead97c8 JF |
20 | #include <asm/xen/hypervisor.h> |
21 | #include <asm/xen/hypercall.h> | |
22 | ||
45263cb0 | 23 | #include <xen/xen.h> |
8006ec3e | 24 | #include <xen/page.h> |
e2a81baf | 25 | #include <xen/interface/callback.h> |
35ae11fd | 26 | #include <xen/interface/memory.h> |
5ead97c8 JF |
27 | #include <xen/interface/physdev.h> |
28 | #include <xen/features.h> | |
5ead97c8 | 29 | #include "xen-ops.h" |
d2eea68e | 30 | #include "vdso.h" |
5ead97c8 JF |
31 | |
32 | /* These are code, but not functions. Defined in entry.S */ | |
33 | extern const char xen_hypervisor_callback[]; | |
34 | extern const char xen_failsafe_callback[]; | |
f63c2f24 T |
35 | extern void xen_sysenter_target(void); |
36 | extern void xen_syscall_target(void); | |
37 | extern void xen_syscall32_target(void); | |
5ead97c8 | 38 | |
42ee1471 | 39 | /* Amount of extra memory space we add to the e820 ranges */ |
8b5d44a5 | 40 | struct xen_memory_region xen_extra_mem[XEN_EXTRA_MEM_MAX_REGIONS] __initdata; |
42ee1471 | 41 | |
aa24411b DV |
42 | /* Number of pages released from the initial allocation. */ |
43 | unsigned long xen_released_pages; | |
44 | ||
698bb8d1 JF |
45 | /* |
46 | * The maximum amount of extra memory compared to the base size. The | |
47 | * main scaling factor is the size of struct page. At extreme ratios | |
48 | * of base:extra, all the base memory can be filled with page | |
49 | * structures for the extra memory, leaving no space for anything | |
50 | * else. | |
51 | * | |
52 | * 10x seems like a reasonable balance between scaling flexibility and | |
53 | * leaving a practically usable system. | |
54 | */ | |
55 | #define EXTRA_MEM_RATIO (10) | |
56 | ||
dc91c728 | 57 | static void __init xen_add_extra_mem(u64 start, u64 size) |
42ee1471 | 58 | { |
6eaa412f | 59 | unsigned long pfn; |
dc91c728 | 60 | int i; |
6eaa412f | 61 | |
dc91c728 DV |
62 | for (i = 0; i < XEN_EXTRA_MEM_MAX_REGIONS; i++) { |
63 | /* Add new region. */ | |
64 | if (xen_extra_mem[i].size == 0) { | |
65 | xen_extra_mem[i].start = start; | |
66 | xen_extra_mem[i].size = size; | |
67 | break; | |
68 | } | |
69 | /* Append to existing region. */ | |
70 | if (xen_extra_mem[i].start + xen_extra_mem[i].size == start) { | |
71 | xen_extra_mem[i].size += size; | |
72 | break; | |
73 | } | |
74 | } | |
75 | if (i == XEN_EXTRA_MEM_MAX_REGIONS) | |
76 | printk(KERN_WARNING "Warning: not enough extra memory regions\n"); | |
42ee1471 | 77 | |
d4bbf7e7 | 78 | memblock_reserve(start, size); |
2f7acb20 | 79 | |
dc91c728 | 80 | xen_max_p2m_pfn = PFN_DOWN(start + size); |
6eaa412f | 81 | |
dc91c728 | 82 | for (pfn = PFN_DOWN(start); pfn <= xen_max_p2m_pfn; pfn++) |
6eaa412f | 83 | __set_phys_to_machine(pfn, INVALID_P2M_ENTRY); |
42ee1471 JF |
84 | } |
85 | ||
96dc08b3 KRW |
86 | static unsigned long __init xen_do_chunk(unsigned long start, |
87 | unsigned long end, bool release) | |
093d7b46 MR |
88 | { |
89 | struct xen_memory_reservation reservation = { | |
90 | .address_bits = 0, | |
91 | .extent_order = 0, | |
92 | .domid = DOMID_SELF | |
93 | }; | |
f89e048e | 94 | unsigned long len = 0; |
093d7b46 MR |
95 | unsigned long pfn; |
96 | int ret; | |
97 | ||
2e2fb754 KRW |
98 | for (pfn = start; pfn < end; pfn++) { |
99 | unsigned long frame; | |
96dc08b3 | 100 | unsigned long mfn = pfn_to_mfn(pfn); |
2e2fb754 | 101 | |
96dc08b3 KRW |
102 | if (release) { |
103 | /* Make sure pfn exists to start with */ | |
104 | if (mfn == INVALID_P2M_ENTRY || mfn_to_pfn(mfn) != pfn) | |
105 | continue; | |
106 | frame = mfn; | |
107 | } else { | |
108 | if (mfn != INVALID_P2M_ENTRY) | |
109 | continue; | |
110 | frame = pfn; | |
111 | } | |
2e2fb754 KRW |
112 | set_xen_guest_handle(reservation.extent_start, &frame); |
113 | reservation.nr_extents = 1; | |
114 | ||
96dc08b3 KRW |
115 | ret = HYPERVISOR_memory_op(release ? XENMEM_decrease_reservation : XENMEM_populate_physmap, |
116 | &reservation); | |
117 | WARN(ret != 1, "Failed to %s pfn %lx err=%d\n", | |
118 | release ? "release" : "populate", pfn, ret); | |
119 | ||
2e2fb754 | 120 | if (ret == 1) { |
96dc08b3 KRW |
121 | if (!early_set_phys_to_machine(pfn, release ? INVALID_P2M_ENTRY : frame)) { |
122 | if (release) | |
123 | break; | |
2e2fb754 KRW |
124 | set_xen_guest_handle(reservation.extent_start, &frame); |
125 | reservation.nr_extents = 1; | |
126 | ret = HYPERVISOR_memory_op(XENMEM_decrease_reservation, | |
96dc08b3 | 127 | &reservation); |
2e2fb754 KRW |
128 | break; |
129 | } | |
130 | len++; | |
131 | } else | |
132 | break; | |
133 | } | |
134 | if (len) | |
96dc08b3 KRW |
135 | printk(KERN_INFO "%s %lx-%lx pfn range: %lu pages %s\n", |
136 | release ? "Freeing" : "Populating", | |
137 | start, end, len, | |
138 | release ? "freed" : "added"); | |
139 | ||
2e2fb754 KRW |
140 | return len; |
141 | } | |
83d51ab4 DV |
142 | |
143 | static unsigned long __init xen_release_chunk(unsigned long start, | |
144 | unsigned long end) | |
145 | { | |
146 | return xen_do_chunk(start, end, true); | |
147 | } | |
148 | ||
2e2fb754 KRW |
149 | static unsigned long __init xen_populate_chunk( |
150 | const struct e820entry *list, size_t map_size, | |
151 | unsigned long max_pfn, unsigned long *last_pfn, | |
152 | unsigned long credits_left) | |
153 | { | |
154 | const struct e820entry *entry; | |
155 | unsigned int i; | |
156 | unsigned long done = 0; | |
157 | unsigned long dest_pfn; | |
158 | ||
159 | for (i = 0, entry = list; i < map_size; i++, entry++) { | |
2e2fb754 KRW |
160 | unsigned long s_pfn; |
161 | unsigned long e_pfn; | |
162 | unsigned long pfns; | |
163 | long capacity; | |
164 | ||
c3d93f88 | 165 | if (credits_left <= 0) |
2e2fb754 KRW |
166 | break; |
167 | ||
168 | if (entry->type != E820_RAM) | |
169 | continue; | |
170 | ||
c3d93f88 | 171 | e_pfn = PFN_DOWN(entry->addr + entry->size); |
2e2fb754 KRW |
172 | |
173 | /* We only care about E820 after the xen_start_info->nr_pages */ | |
174 | if (e_pfn <= max_pfn) | |
175 | continue; | |
176 | ||
c3d93f88 | 177 | s_pfn = PFN_UP(entry->addr); |
2e2fb754 KRW |
178 | /* If the E820 falls within the nr_pages, we want to start |
179 | * at the nr_pages PFN. | |
180 | * If that would mean going past the E820 entry, skip it | |
181 | */ | |
182 | if (s_pfn <= max_pfn) { | |
183 | capacity = e_pfn - max_pfn; | |
184 | dest_pfn = max_pfn; | |
185 | } else { | |
2e2fb754 KRW |
186 | capacity = e_pfn - s_pfn; |
187 | dest_pfn = s_pfn; | |
188 | } | |
2e2fb754 | 189 | |
c3d93f88 | 190 | if (credits_left < capacity) |
191 | capacity = credits_left; | |
2e2fb754 | 192 | |
c3d93f88 | 193 | pfns = xen_do_chunk(dest_pfn, dest_pfn + capacity, false); |
2e2fb754 | 194 | done += pfns; |
2e2fb754 | 195 | *last_pfn = (dest_pfn + pfns); |
c3d93f88 | 196 | if (pfns < capacity) |
197 | break; | |
198 | credits_left -= pfns; | |
2e2fb754 KRW |
199 | } |
200 | return done; | |
201 | } | |
83d51ab4 DV |
202 | |
203 | static void __init xen_set_identity_and_release_chunk( | |
204 | unsigned long start_pfn, unsigned long end_pfn, unsigned long nr_pages, | |
205 | unsigned long *released, unsigned long *identity) | |
206 | { | |
207 | unsigned long pfn; | |
208 | ||
209 | /* | |
210 | * If the PFNs are currently mapped, the VA mapping also needs | |
211 | * to be updated to be 1:1. | |
212 | */ | |
213 | for (pfn = start_pfn; pfn <= max_pfn_mapped && pfn < end_pfn; pfn++) | |
214 | (void)HYPERVISOR_update_va_mapping( | |
215 | (unsigned long)__va(pfn << PAGE_SHIFT), | |
216 | mfn_pte(pfn, PAGE_KERNEL_IO), 0); | |
217 | ||
218 | if (start_pfn < nr_pages) | |
219 | *released += xen_release_chunk( | |
220 | start_pfn, min(end_pfn, nr_pages)); | |
221 | ||
222 | *identity += set_phys_range_identity(start_pfn, end_pfn); | |
223 | } | |
224 | ||
f3f436e3 DV |
225 | static unsigned long __init xen_set_identity_and_release( |
226 | const struct e820entry *list, size_t map_size, unsigned long nr_pages) | |
093d7b46 | 227 | { |
f3f436e3 | 228 | phys_addr_t start = 0; |
093d7b46 | 229 | unsigned long released = 0; |
68df0da7 | 230 | unsigned long identity = 0; |
f3f436e3 | 231 | const struct e820entry *entry; |
68df0da7 KRW |
232 | int i; |
233 | ||
f3f436e3 DV |
234 | /* |
235 | * Combine non-RAM regions and gaps until a RAM region (or the | |
236 | * end of the map) is reached, then set the 1:1 map and | |
237 | * release the pages (if available) in those non-RAM regions. | |
238 | * | |
239 | * The combined non-RAM regions are rounded to a whole number | |
240 | * of pages so any partial pages are accessible via the 1:1 | |
241 | * mapping. This is needed for some BIOSes that put (for | |
242 | * example) the DMI tables in a reserved region that begins on | |
243 | * a non-page boundary. | |
244 | */ | |
68df0da7 | 245 | for (i = 0, entry = list; i < map_size; i++, entry++) { |
f3f436e3 | 246 | phys_addr_t end = entry->addr + entry->size; |
f3f436e3 DV |
247 | if (entry->type == E820_RAM || i == map_size - 1) { |
248 | unsigned long start_pfn = PFN_DOWN(start); | |
249 | unsigned long end_pfn = PFN_UP(end); | |
68df0da7 | 250 | |
f3f436e3 DV |
251 | if (entry->type == E820_RAM) |
252 | end_pfn = PFN_UP(entry->addr); | |
68df0da7 | 253 | |
83d51ab4 DV |
254 | if (start_pfn < end_pfn) |
255 | xen_set_identity_and_release_chunk( | |
256 | start_pfn, end_pfn, nr_pages, | |
257 | &released, &identity); | |
68df0da7 | 258 | |
f3f436e3 | 259 | start = end; |
68df0da7 | 260 | } |
68df0da7 | 261 | } |
f3f436e3 | 262 | |
ca118238 KRW |
263 | if (released) |
264 | printk(KERN_INFO "Released %lu pages of unused memory\n", released); | |
265 | if (identity) | |
266 | printk(KERN_INFO "Set %ld page(s) to 1-1 mapping\n", identity); | |
f3f436e3 DV |
267 | |
268 | return released; | |
68df0da7 | 269 | } |
d312ae87 DV |
270 | |
271 | static unsigned long __init xen_get_max_pages(void) | |
272 | { | |
273 | unsigned long max_pages = MAX_DOMAIN_PAGES; | |
274 | domid_t domid = DOMID_SELF; | |
275 | int ret; | |
276 | ||
d3db7281 IC |
277 | /* |
278 | * For the initial domain we use the maximum reservation as | |
279 | * the maximum page. | |
280 | * | |
281 | * For guest domains the current maximum reservation reflects | |
282 | * the current maximum rather than the static maximum. In this | |
283 | * case the e820 map provided to us will cover the static | |
284 | * maximum region. | |
285 | */ | |
286 | if (xen_initial_domain()) { | |
287 | ret = HYPERVISOR_memory_op(XENMEM_maximum_reservation, &domid); | |
288 | if (ret > 0) | |
289 | max_pages = ret; | |
290 | } | |
291 | ||
d312ae87 DV |
292 | return min(max_pages, MAX_DOMAIN_PAGES); |
293 | } | |
294 | ||
dc91c728 DV |
295 | static void xen_align_and_add_e820_region(u64 start, u64 size, int type) |
296 | { | |
297 | u64 end = start + size; | |
298 | ||
299 | /* Align RAM regions to page boundaries. */ | |
300 | if (type == E820_RAM) { | |
301 | start = PAGE_ALIGN(start); | |
302 | end &= ~((u64)PAGE_SIZE - 1); | |
303 | } | |
304 | ||
305 | e820_add_region(start, end - start, type); | |
306 | } | |
307 | ||
5ead97c8 JF |
308 | /** |
309 | * machine_specific_memory_setup - Hook for machine specific memory setup. | |
310 | **/ | |
5ead97c8 JF |
311 | char * __init xen_memory_setup(void) |
312 | { | |
35ae11fd IC |
313 | static struct e820entry map[E820MAX] __initdata; |
314 | ||
5ead97c8 | 315 | unsigned long max_pfn = xen_start_info->nr_pages; |
35ae11fd IC |
316 | unsigned long long mem_end; |
317 | int rc; | |
318 | struct xen_memory_map memmap; | |
dc91c728 | 319 | unsigned long max_pages; |
2e2fb754 | 320 | unsigned long last_pfn = 0; |
42ee1471 | 321 | unsigned long extra_pages = 0; |
2e2fb754 | 322 | unsigned long populated; |
35ae11fd | 323 | int i; |
9e9a5fcb | 324 | int op; |
5ead97c8 | 325 | |
8006ec3e | 326 | max_pfn = min(MAX_DOMAIN_PAGES, max_pfn); |
35ae11fd IC |
327 | mem_end = PFN_PHYS(max_pfn); |
328 | ||
329 | memmap.nr_entries = E820MAX; | |
330 | set_xen_guest_handle(memmap.buffer, map); | |
331 | ||
9e9a5fcb IC |
332 | op = xen_initial_domain() ? |
333 | XENMEM_machine_memory_map : | |
334 | XENMEM_memory_map; | |
335 | rc = HYPERVISOR_memory_op(op, &memmap); | |
35ae11fd | 336 | if (rc == -ENOSYS) { |
9ec23a7f | 337 | BUG_ON(xen_initial_domain()); |
35ae11fd IC |
338 | memmap.nr_entries = 1; |
339 | map[0].addr = 0ULL; | |
340 | map[0].size = mem_end; | |
341 | /* 8MB slack (to balance backend allocations). */ | |
342 | map[0].size += 8ULL << 20; | |
343 | map[0].type = E820_RAM; | |
344 | rc = 0; | |
345 | } | |
346 | BUG_ON(rc); | |
8006ec3e | 347 | |
dc91c728 DV |
348 | /* Make sure the Xen-supplied memory map is well-ordered. */ |
349 | sanitize_e820_map(map, memmap.nr_entries, &memmap.nr_entries); | |
350 | ||
351 | max_pages = xen_get_max_pages(); | |
352 | if (max_pages > max_pfn) | |
353 | extra_pages += max_pages - max_pfn; | |
354 | ||
f3f436e3 DV |
355 | /* |
356 | * Set P2M for all non-RAM pages and E820 gaps to be identity | |
357 | * type PFNs. Any RAM pages that would be made inaccesible by | |
358 | * this are first released. | |
359 | */ | |
360 | xen_released_pages = xen_set_identity_and_release( | |
361 | map, memmap.nr_entries, max_pfn); | |
dc91c728 | 362 | |
2e2fb754 KRW |
363 | /* |
364 | * Populate back the non-RAM pages and E820 gaps that had been | |
365 | * released. */ | |
366 | populated = xen_populate_chunk(map, memmap.nr_entries, | |
367 | max_pfn, &last_pfn, xen_released_pages); | |
368 | ||
58b7b53a KRW |
369 | xen_released_pages -= populated; |
370 | extra_pages += xen_released_pages; | |
2e2fb754 KRW |
371 | |
372 | if (last_pfn > max_pfn) { | |
373 | max_pfn = min(MAX_DOMAIN_PAGES, last_pfn); | |
374 | mem_end = PFN_PHYS(max_pfn); | |
375 | } | |
dc91c728 DV |
376 | /* |
377 | * Clamp the amount of extra memory to a EXTRA_MEM_RATIO | |
378 | * factor the base size. On non-highmem systems, the base | |
379 | * size is the full initial memory allocation; on highmem it | |
380 | * is limited to the max size of lowmem, so that it doesn't | |
381 | * get completely filled. | |
382 | * | |
383 | * In principle there could be a problem in lowmem systems if | |
384 | * the initial memory is also very large with respect to | |
385 | * lowmem, but we won't try to deal with that here. | |
386 | */ | |
387 | extra_pages = min(EXTRA_MEM_RATIO * min(max_pfn, PFN_DOWN(MAXMEM)), | |
388 | extra_pages); | |
dc91c728 DV |
389 | i = 0; |
390 | while (i < memmap.nr_entries) { | |
391 | u64 addr = map[i].addr; | |
392 | u64 size = map[i].size; | |
393 | u32 type = map[i].type; | |
394 | ||
395 | if (type == E820_RAM) { | |
396 | if (addr < mem_end) { | |
397 | size = min(size, mem_end - addr); | |
398 | } else if (extra_pages) { | |
399 | size = min(size, (u64)extra_pages * PAGE_SIZE); | |
400 | extra_pages -= size / PAGE_SIZE; | |
401 | xen_add_extra_mem(addr, size); | |
402 | } else | |
403 | type = E820_UNUSABLE; | |
3654581e JF |
404 | } |
405 | ||
dc91c728 | 406 | xen_align_and_add_e820_region(addr, size, type); |
b5b43ced | 407 | |
dc91c728 DV |
408 | map[i].addr += size; |
409 | map[i].size -= size; | |
410 | if (map[i].size == 0) | |
411 | i++; | |
35ae11fd | 412 | } |
b792c755 JF |
413 | |
414 | /* | |
9ec23a7f IC |
415 | * In domU, the ISA region is normal, usable memory, but we |
416 | * reserve ISA memory anyway because too many things poke | |
b792c755 JF |
417 | * about in there. |
418 | */ | |
419 | e820_add_region(ISA_START_ADDRESS, ISA_END_ADDRESS - ISA_START_ADDRESS, | |
420 | E820_RESERVED); | |
5ead97c8 | 421 | |
be5bf9fa JF |
422 | /* |
423 | * Reserve Xen bits: | |
424 | * - mfn_list | |
425 | * - xen_start_info | |
426 | * See comment above "struct start_info" in <xen/interface/xen.h> | |
427 | */ | |
24aa0788 TH |
428 | memblock_reserve(__pa(xen_start_info->mfn_list), |
429 | xen_start_info->pt_base - xen_start_info->mfn_list); | |
be5bf9fa JF |
430 | |
431 | sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); | |
432 | ||
5ead97c8 JF |
433 | return "Xen"; |
434 | } | |
435 | ||
d2eea68e RM |
436 | /* |
437 | * Set the bit indicating "nosegneg" library variants should be used. | |
6a52e4b1 JF |
438 | * We only need to bother in pure 32-bit mode; compat 32-bit processes |
439 | * can have un-truncated segments, so wrapping around is allowed. | |
d2eea68e | 440 | */ |
08b6d290 | 441 | static void __init fiddle_vdso(void) |
d2eea68e | 442 | { |
6a52e4b1 JF |
443 | #ifdef CONFIG_X86_32 |
444 | u32 *mask; | |
445 | mask = VDSO32_SYMBOL(&vdso32_int80_start, NOTE_MASK); | |
446 | *mask |= 1 << VDSO_NOTE_NONEGSEG_BIT; | |
447 | mask = VDSO32_SYMBOL(&vdso32_sysenter_start, NOTE_MASK); | |
d2eea68e | 448 | *mask |= 1 << VDSO_NOTE_NONEGSEG_BIT; |
6fcac6d3 | 449 | #endif |
d2eea68e RM |
450 | } |
451 | ||
ae15a3b4 | 452 | static int __cpuinit register_callback(unsigned type, const void *func) |
e2a81baf | 453 | { |
88459d4c JF |
454 | struct callback_register callback = { |
455 | .type = type, | |
456 | .address = XEN_CALLBACK(__KERNEL_CS, func), | |
e2a81baf JF |
457 | .flags = CALLBACKF_mask_events, |
458 | }; | |
459 | ||
88459d4c JF |
460 | return HYPERVISOR_callback_op(CALLBACKOP_register, &callback); |
461 | } | |
462 | ||
463 | void __cpuinit xen_enable_sysenter(void) | |
464 | { | |
6fcac6d3 | 465 | int ret; |
62541c37 | 466 | unsigned sysenter_feature; |
6fcac6d3 JF |
467 | |
468 | #ifdef CONFIG_X86_32 | |
62541c37 | 469 | sysenter_feature = X86_FEATURE_SEP; |
6fcac6d3 | 470 | #else |
62541c37 | 471 | sysenter_feature = X86_FEATURE_SYSENTER32; |
6fcac6d3 | 472 | #endif |
88459d4c | 473 | |
62541c37 JF |
474 | if (!boot_cpu_has(sysenter_feature)) |
475 | return; | |
476 | ||
6fcac6d3 | 477 | ret = register_callback(CALLBACKTYPE_sysenter, xen_sysenter_target); |
62541c37 JF |
478 | if(ret != 0) |
479 | setup_clear_cpu_cap(sysenter_feature); | |
e2a81baf JF |
480 | } |
481 | ||
6fcac6d3 JF |
482 | void __cpuinit xen_enable_syscall(void) |
483 | { | |
484 | #ifdef CONFIG_X86_64 | |
6fcac6d3 | 485 | int ret; |
6fcac6d3 JF |
486 | |
487 | ret = register_callback(CALLBACKTYPE_syscall, xen_syscall_target); | |
488 | if (ret != 0) { | |
d5303b81 | 489 | printk(KERN_ERR "Failed to set syscall callback: %d\n", ret); |
62541c37 JF |
490 | /* Pretty fatal; 64-bit userspace has no other |
491 | mechanism for syscalls. */ | |
492 | } | |
493 | ||
494 | if (boot_cpu_has(X86_FEATURE_SYSCALL32)) { | |
6fcac6d3 JF |
495 | ret = register_callback(CALLBACKTYPE_syscall32, |
496 | xen_syscall32_target); | |
d5303b81 | 497 | if (ret != 0) |
62541c37 | 498 | setup_clear_cpu_cap(X86_FEATURE_SYSCALL32); |
6fcac6d3 JF |
499 | } |
500 | #endif /* CONFIG_X86_64 */ | |
501 | } | |
502 | ||
5ead97c8 JF |
503 | void __init xen_arch_setup(void) |
504 | { | |
f09f6d19 DD |
505 | xen_panic_handler_init(); |
506 | ||
5ead97c8 JF |
507 | HYPERVISOR_vm_assist(VMASST_CMD_enable, VMASST_TYPE_4gb_segments); |
508 | HYPERVISOR_vm_assist(VMASST_CMD_enable, VMASST_TYPE_writable_pagetables); | |
509 | ||
510 | if (!xen_feature(XENFEAT_auto_translated_physmap)) | |
f63c2f24 T |
511 | HYPERVISOR_vm_assist(VMASST_CMD_enable, |
512 | VMASST_TYPE_pae_extended_cr3); | |
5ead97c8 | 513 | |
88459d4c JF |
514 | if (register_callback(CALLBACKTYPE_event, xen_hypervisor_callback) || |
515 | register_callback(CALLBACKTYPE_failsafe, xen_failsafe_callback)) | |
516 | BUG(); | |
5ead97c8 | 517 | |
e2a81baf | 518 | xen_enable_sysenter(); |
6fcac6d3 | 519 | xen_enable_syscall(); |
e2a81baf | 520 | |
5ead97c8 JF |
521 | #ifdef CONFIG_ACPI |
522 | if (!(xen_start_info->flags & SIF_INITDOMAIN)) { | |
523 | printk(KERN_INFO "ACPI in unprivileged domain disabled\n"); | |
524 | disable_acpi(); | |
525 | } | |
526 | #endif | |
527 | ||
528 | memcpy(boot_command_line, xen_start_info->cmd_line, | |
529 | MAX_GUEST_CMDLINE > COMMAND_LINE_SIZE ? | |
530 | COMMAND_LINE_SIZE : MAX_GUEST_CMDLINE); | |
531 | ||
bc15fde7 JF |
532 | /* Set up idle, making sure it calls safe_halt() pvop */ |
533 | #ifdef CONFIG_X86_32 | |
534 | boot_cpu_data.hlt_works_ok = 1; | |
535 | #endif | |
d91ee586 | 536 | disable_cpuidle(); |
48cdd828 | 537 | disable_cpufreq(); |
e5fd47bf | 538 | WARN_ON(set_pm_idle_to_default()); |
d2eea68e | 539 | fiddle_vdso(); |
5ead97c8 | 540 | } |