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Commit | Line | Data |
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51c52e86 ME |
1 | /* |
2 | * Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org) | |
3 | * | |
4 | * Modifications for ppc64: | |
5 | * Copyright (C) 2003 Dave Engebretsen <engebret@us.ibm.com> | |
6 | * | |
7 | * Copyright 2008 Michael Ellerman, IBM Corporation. | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License | |
11 | * as published by the Free Software Foundation; either version | |
12 | * 2 of the License, or (at your option) any later version. | |
13 | */ | |
14 | ||
3880ecb0 | 15 | #include <linux/types.h> |
309b315b | 16 | #include <linux/jump_label.h> |
51c52e86 | 17 | #include <linux/kernel.h> |
362e7701 ME |
18 | #include <linux/string.h> |
19 | #include <linux/init.h> | |
589ee628 | 20 | #include <linux/sched/mm.h> |
51c52e86 ME |
21 | #include <asm/cputable.h> |
22 | #include <asm/code-patching.h> | |
d715e433 AB |
23 | #include <asm/page.h> |
24 | #include <asm/sections.h> | |
9402c684 BH |
25 | #include <asm/setup.h> |
26 | #include <asm/firmware.h> | |
51c52e86 ME |
27 | |
28 | struct fixup_entry { | |
29 | unsigned long mask; | |
30 | unsigned long value; | |
31 | long start_off; | |
32 | long end_off; | |
fac23fe4 ME |
33 | long alt_start_off; |
34 | long alt_end_off; | |
51c52e86 ME |
35 | }; |
36 | ||
9b1a735d | 37 | static unsigned int *calc_addr(struct fixup_entry *fcur, long offset) |
51c52e86 | 38 | { |
9b1a735d ME |
39 | /* |
40 | * We store the offset to the code as a negative offset from | |
41 | * the start of the alt_entry, to support the VDSO. This | |
42 | * routine converts that back into an actual address. | |
43 | */ | |
44 | return (unsigned int *)((unsigned long)fcur + offset); | |
45 | } | |
46 | ||
47 | static int patch_alt_instruction(unsigned int *src, unsigned int *dest, | |
48 | unsigned int *alt_start, unsigned int *alt_end) | |
49 | { | |
50 | unsigned int instr; | |
51 | ||
52 | instr = *src; | |
53 | ||
54 | if (instr_is_relative_branch(*src)) { | |
55 | unsigned int *target = (unsigned int *)branch_target(src); | |
56 | ||
57 | /* Branch within the section doesn't need translating */ | |
58 | if (target < alt_start || target >= alt_end) { | |
59 | instr = translate_branch(dest, src); | |
60 | if (!instr) | |
61 | return 1; | |
62 | } | |
63 | } | |
64 | ||
65 | patch_instruction(dest, instr); | |
66 | ||
67 | return 0; | |
68 | } | |
69 | ||
70 | static int patch_feature_section(unsigned long value, struct fixup_entry *fcur) | |
71 | { | |
72 | unsigned int *start, *end, *alt_start, *alt_end, *src, *dest; | |
73 | ||
74 | start = calc_addr(fcur, fcur->start_off); | |
75 | end = calc_addr(fcur, fcur->end_off); | |
76 | alt_start = calc_addr(fcur, fcur->alt_start_off); | |
77 | alt_end = calc_addr(fcur, fcur->alt_end_off); | |
78 | ||
79 | if ((alt_end - alt_start) > (end - start)) | |
80 | return 1; | |
51c52e86 ME |
81 | |
82 | if ((value & fcur->mask) == fcur->value) | |
9b1a735d | 83 | return 0; |
51c52e86 | 84 | |
9b1a735d ME |
85 | src = alt_start; |
86 | dest = start; | |
51c52e86 | 87 | |
9b1a735d ME |
88 | for (; src < alt_end; src++, dest++) { |
89 | if (patch_alt_instruction(src, dest, alt_start, alt_end)) | |
90 | return 1; | |
51c52e86 | 91 | } |
9b1a735d ME |
92 | |
93 | for (; dest < end; dest++) | |
16c57b36 | 94 | patch_instruction(dest, PPC_INST_NOP); |
9b1a735d ME |
95 | |
96 | return 0; | |
51c52e86 ME |
97 | } |
98 | ||
99 | void do_feature_fixups(unsigned long value, void *fixup_start, void *fixup_end) | |
100 | { | |
101 | struct fixup_entry *fcur, *fend; | |
102 | ||
103 | fcur = fixup_start; | |
104 | fend = fixup_end; | |
105 | ||
9b1a735d ME |
106 | for (; fcur < fend; fcur++) { |
107 | if (patch_feature_section(value, fcur)) { | |
1856c020 | 108 | WARN_ON(1); |
9b1a735d ME |
109 | printk("Unable to patch feature section at %p - %p" \ |
110 | " with %p - %p\n", | |
111 | calc_addr(fcur, fcur->start_off), | |
112 | calc_addr(fcur, fcur->end_off), | |
113 | calc_addr(fcur, fcur->alt_start_off), | |
114 | calc_addr(fcur, fcur->alt_end_off)); | |
115 | } | |
116 | } | |
51c52e86 | 117 | } |
362e7701 | 118 | |
aa8a5e00 ME |
119 | #ifdef CONFIG_PPC_BOOK3S_64 |
120 | void do_rfi_flush_fixups(enum l1d_flush_type types) | |
121 | { | |
122 | unsigned int instrs[3], *dest; | |
123 | long *start, *end; | |
124 | int i; | |
125 | ||
126 | start = PTRRELOC(&__start___rfi_flush_fixup), | |
127 | end = PTRRELOC(&__stop___rfi_flush_fixup); | |
128 | ||
129 | instrs[0] = 0x60000000; /* nop */ | |
130 | instrs[1] = 0x60000000; /* nop */ | |
131 | instrs[2] = 0x60000000; /* nop */ | |
132 | ||
133 | if (types & L1D_FLUSH_FALLBACK) | |
134 | /* b .+16 to fallback flush */ | |
135 | instrs[0] = 0x48000010; | |
136 | ||
137 | i = 0; | |
138 | if (types & L1D_FLUSH_ORI) { | |
139 | instrs[i++] = 0x63ff0000; /* ori 31,31,0 speculation barrier */ | |
140 | instrs[i++] = 0x63de0000; /* ori 30,30,0 L1d flush*/ | |
141 | } | |
142 | ||
143 | if (types & L1D_FLUSH_MTTRIG) | |
144 | instrs[i++] = 0x7c12dba6; /* mtspr TRIG2,r0 (SPR #882) */ | |
145 | ||
146 | for (i = 0; start < end; start++, i++) { | |
147 | dest = (void *)start + *start; | |
148 | ||
149 | pr_devel("patching dest %lx\n", (unsigned long)dest); | |
150 | ||
151 | patch_instruction(dest, instrs[0]); | |
152 | patch_instruction(dest + 1, instrs[1]); | |
153 | patch_instruction(dest + 2, instrs[2]); | |
154 | } | |
155 | ||
156 | printk(KERN_DEBUG "rfi-flush: patched %d locations\n", i); | |
157 | } | |
158 | #endif /* CONFIG_PPC_BOOK3S_64 */ | |
159 | ||
2d1b2027 KG |
160 | void do_lwsync_fixups(unsigned long value, void *fixup_start, void *fixup_end) |
161 | { | |
3d98ffbf BH |
162 | long *start, *end; |
163 | unsigned int *dest; | |
2d1b2027 KG |
164 | |
165 | if (!(value & CPU_FTR_LWSYNC)) | |
166 | return ; | |
167 | ||
168 | start = fixup_start; | |
169 | end = fixup_end; | |
170 | ||
171 | for (; start < end; start++) { | |
172 | dest = (void *)start + *start; | |
16c57b36 | 173 | patch_instruction(dest, PPC_INST_LWSYNC); |
2d1b2027 KG |
174 | } |
175 | } | |
176 | ||
9402c684 | 177 | static void do_final_fixups(void) |
d715e433 AB |
178 | { |
179 | #if defined(CONFIG_PPC64) && defined(CONFIG_RELOCATABLE) | |
180 | int *src, *dest; | |
181 | unsigned long length; | |
182 | ||
183 | if (PHYSICAL_START == 0) | |
184 | return; | |
185 | ||
186 | src = (int *)(KERNELBASE + PHYSICAL_START); | |
187 | dest = (int *)KERNELBASE; | |
188 | length = (__end_interrupts - _stext) / sizeof(int); | |
189 | ||
190 | while (length--) { | |
191 | patch_instruction(dest, *src); | |
192 | src++; | |
193 | dest++; | |
194 | } | |
195 | #endif | |
196 | } | |
197 | ||
a28e46f1 ME |
198 | static unsigned long __initdata saved_cpu_features; |
199 | static unsigned int __initdata saved_mmu_features; | |
200 | #ifdef CONFIG_PPC64 | |
201 | static unsigned long __initdata saved_firmware_features; | |
202 | #endif | |
203 | ||
204 | void __init apply_feature_fixups(void) | |
9402c684 | 205 | { |
2c0f9951 | 206 | struct cpu_spec *spec = PTRRELOC(*PTRRELOC(&cur_cpu_spec)); |
9402c684 | 207 | |
a28e46f1 ME |
208 | *PTRRELOC(&saved_cpu_features) = spec->cpu_features; |
209 | *PTRRELOC(&saved_mmu_features) = spec->mmu_features; | |
210 | ||
9402c684 BH |
211 | /* |
212 | * Apply the CPU-specific and firmware specific fixups to kernel text | |
213 | * (nop out sections not relevant to this CPU or this firmware). | |
214 | */ | |
215 | do_feature_fixups(spec->cpu_features, | |
216 | PTRRELOC(&__start___ftr_fixup), | |
217 | PTRRELOC(&__stop___ftr_fixup)); | |
218 | ||
219 | do_feature_fixups(spec->mmu_features, | |
220 | PTRRELOC(&__start___mmu_ftr_fixup), | |
221 | PTRRELOC(&__stop___mmu_ftr_fixup)); | |
222 | ||
223 | do_lwsync_fixups(spec->cpu_features, | |
224 | PTRRELOC(&__start___lwsync_fixup), | |
225 | PTRRELOC(&__stop___lwsync_fixup)); | |
226 | ||
227 | #ifdef CONFIG_PPC64 | |
a28e46f1 | 228 | saved_firmware_features = powerpc_firmware_features; |
9402c684 BH |
229 | do_feature_fixups(powerpc_firmware_features, |
230 | &__start___fw_ftr_fixup, &__stop___fw_ftr_fixup); | |
231 | #endif | |
232 | do_final_fixups(); | |
97f6e0cc | 233 | } |
309b315b | 234 | |
97f6e0cc BH |
235 | void __init setup_feature_keys(void) |
236 | { | |
309b315b AK |
237 | /* |
238 | * Initialise jump label. This causes all the cpu/mmu_has_feature() | |
239 | * checks to take on their correct polarity based on the current set of | |
240 | * CPU/MMU features. | |
241 | */ | |
242 | jump_label_init(); | |
4db73271 | 243 | cpu_feature_keys_init(); |
c12e6f24 | 244 | mmu_feature_keys_init(); |
9402c684 BH |
245 | } |
246 | ||
a28e46f1 ME |
247 | static int __init check_features(void) |
248 | { | |
249 | WARN(saved_cpu_features != cur_cpu_spec->cpu_features, | |
250 | "CPU features changed after feature patching!\n"); | |
251 | WARN(saved_mmu_features != cur_cpu_spec->mmu_features, | |
252 | "MMU features changed after feature patching!\n"); | |
253 | #ifdef CONFIG_PPC64 | |
254 | WARN(saved_firmware_features != powerpc_firmware_features, | |
255 | "Firmware features changed after feature patching!\n"); | |
256 | #endif | |
257 | ||
258 | return 0; | |
259 | } | |
260 | late_initcall(check_features); | |
261 | ||
362e7701 ME |
262 | #ifdef CONFIG_FTR_FIXUP_SELFTEST |
263 | ||
264 | #define check(x) \ | |
265 | if (!(x)) printk("feature-fixups: test failed at line %d\n", __LINE__); | |
266 | ||
267 | /* This must be after the text it fixes up, vmlinux.lds.S enforces that atm */ | |
268 | static struct fixup_entry fixup; | |
269 | ||
270 | static long calc_offset(struct fixup_entry *entry, unsigned int *p) | |
271 | { | |
272 | return (unsigned long)p - (unsigned long)entry; | |
273 | } | |
274 | ||
e51df2c1 | 275 | static void test_basic_patching(void) |
362e7701 | 276 | { |
c69a48cd DA |
277 | extern unsigned int ftr_fixup_test1[]; |
278 | extern unsigned int end_ftr_fixup_test1[]; | |
279 | extern unsigned int ftr_fixup_test1_orig[]; | |
280 | extern unsigned int ftr_fixup_test1_expected[]; | |
281 | int size = end_ftr_fixup_test1 - ftr_fixup_test1; | |
362e7701 ME |
282 | |
283 | fixup.value = fixup.mask = 8; | |
c69a48cd DA |
284 | fixup.start_off = calc_offset(&fixup, ftr_fixup_test1 + 1); |
285 | fixup.end_off = calc_offset(&fixup, ftr_fixup_test1 + 2); | |
362e7701 ME |
286 | fixup.alt_start_off = fixup.alt_end_off = 0; |
287 | ||
288 | /* Sanity check */ | |
c69a48cd | 289 | check(memcmp(ftr_fixup_test1, ftr_fixup_test1_orig, size) == 0); |
362e7701 ME |
290 | |
291 | /* Check we don't patch if the value matches */ | |
292 | patch_feature_section(8, &fixup); | |
c69a48cd | 293 | check(memcmp(ftr_fixup_test1, ftr_fixup_test1_orig, size) == 0); |
362e7701 ME |
294 | |
295 | /* Check we do patch if the value doesn't match */ | |
296 | patch_feature_section(0, &fixup); | |
c69a48cd | 297 | check(memcmp(ftr_fixup_test1, ftr_fixup_test1_expected, size) == 0); |
362e7701 ME |
298 | |
299 | /* Check we do patch if the mask doesn't match */ | |
c69a48cd DA |
300 | memcpy(ftr_fixup_test1, ftr_fixup_test1_orig, size); |
301 | check(memcmp(ftr_fixup_test1, ftr_fixup_test1_orig, size) == 0); | |
362e7701 | 302 | patch_feature_section(~8, &fixup); |
c69a48cd | 303 | check(memcmp(ftr_fixup_test1, ftr_fixup_test1_expected, size) == 0); |
362e7701 ME |
304 | } |
305 | ||
306 | static void test_alternative_patching(void) | |
307 | { | |
c69a48cd DA |
308 | extern unsigned int ftr_fixup_test2[]; |
309 | extern unsigned int end_ftr_fixup_test2[]; | |
310 | extern unsigned int ftr_fixup_test2_orig[]; | |
311 | extern unsigned int ftr_fixup_test2_alt[]; | |
312 | extern unsigned int ftr_fixup_test2_expected[]; | |
313 | int size = end_ftr_fixup_test2 - ftr_fixup_test2; | |
362e7701 ME |
314 | |
315 | fixup.value = fixup.mask = 0xF; | |
c69a48cd DA |
316 | fixup.start_off = calc_offset(&fixup, ftr_fixup_test2 + 1); |
317 | fixup.end_off = calc_offset(&fixup, ftr_fixup_test2 + 2); | |
318 | fixup.alt_start_off = calc_offset(&fixup, ftr_fixup_test2_alt); | |
319 | fixup.alt_end_off = calc_offset(&fixup, ftr_fixup_test2_alt + 1); | |
362e7701 ME |
320 | |
321 | /* Sanity check */ | |
c69a48cd | 322 | check(memcmp(ftr_fixup_test2, ftr_fixup_test2_orig, size) == 0); |
362e7701 ME |
323 | |
324 | /* Check we don't patch if the value matches */ | |
325 | patch_feature_section(0xF, &fixup); | |
c69a48cd | 326 | check(memcmp(ftr_fixup_test2, ftr_fixup_test2_orig, size) == 0); |
362e7701 ME |
327 | |
328 | /* Check we do patch if the value doesn't match */ | |
329 | patch_feature_section(0, &fixup); | |
c69a48cd | 330 | check(memcmp(ftr_fixup_test2, ftr_fixup_test2_expected, size) == 0); |
362e7701 ME |
331 | |
332 | /* Check we do patch if the mask doesn't match */ | |
c69a48cd DA |
333 | memcpy(ftr_fixup_test2, ftr_fixup_test2_orig, size); |
334 | check(memcmp(ftr_fixup_test2, ftr_fixup_test2_orig, size) == 0); | |
362e7701 | 335 | patch_feature_section(~0xF, &fixup); |
c69a48cd | 336 | check(memcmp(ftr_fixup_test2, ftr_fixup_test2_expected, size) == 0); |
362e7701 ME |
337 | } |
338 | ||
339 | static void test_alternative_case_too_big(void) | |
340 | { | |
c69a48cd DA |
341 | extern unsigned int ftr_fixup_test3[]; |
342 | extern unsigned int end_ftr_fixup_test3[]; | |
343 | extern unsigned int ftr_fixup_test3_orig[]; | |
344 | extern unsigned int ftr_fixup_test3_alt[]; | |
345 | int size = end_ftr_fixup_test3 - ftr_fixup_test3; | |
362e7701 ME |
346 | |
347 | fixup.value = fixup.mask = 0xC; | |
c69a48cd DA |
348 | fixup.start_off = calc_offset(&fixup, ftr_fixup_test3 + 1); |
349 | fixup.end_off = calc_offset(&fixup, ftr_fixup_test3 + 2); | |
350 | fixup.alt_start_off = calc_offset(&fixup, ftr_fixup_test3_alt); | |
351 | fixup.alt_end_off = calc_offset(&fixup, ftr_fixup_test3_alt + 2); | |
362e7701 ME |
352 | |
353 | /* Sanity check */ | |
c69a48cd | 354 | check(memcmp(ftr_fixup_test3, ftr_fixup_test3_orig, size) == 0); |
362e7701 ME |
355 | |
356 | /* Expect nothing to be patched, and the error returned to us */ | |
357 | check(patch_feature_section(0xF, &fixup) == 1); | |
c69a48cd | 358 | check(memcmp(ftr_fixup_test3, ftr_fixup_test3_orig, size) == 0); |
362e7701 | 359 | check(patch_feature_section(0, &fixup) == 1); |
c69a48cd | 360 | check(memcmp(ftr_fixup_test3, ftr_fixup_test3_orig, size) == 0); |
362e7701 | 361 | check(patch_feature_section(~0xF, &fixup) == 1); |
c69a48cd | 362 | check(memcmp(ftr_fixup_test3, ftr_fixup_test3_orig, size) == 0); |
362e7701 ME |
363 | } |
364 | ||
365 | static void test_alternative_case_too_small(void) | |
366 | { | |
c69a48cd DA |
367 | extern unsigned int ftr_fixup_test4[]; |
368 | extern unsigned int end_ftr_fixup_test4[]; | |
369 | extern unsigned int ftr_fixup_test4_orig[]; | |
370 | extern unsigned int ftr_fixup_test4_alt[]; | |
371 | extern unsigned int ftr_fixup_test4_expected[]; | |
372 | int size = end_ftr_fixup_test4 - ftr_fixup_test4; | |
362e7701 ME |
373 | unsigned long flag; |
374 | ||
375 | /* Check a high-bit flag */ | |
376 | flag = 1UL << ((sizeof(unsigned long) - 1) * 8); | |
377 | fixup.value = fixup.mask = flag; | |
c69a48cd DA |
378 | fixup.start_off = calc_offset(&fixup, ftr_fixup_test4 + 1); |
379 | fixup.end_off = calc_offset(&fixup, ftr_fixup_test4 + 5); | |
380 | fixup.alt_start_off = calc_offset(&fixup, ftr_fixup_test4_alt); | |
381 | fixup.alt_end_off = calc_offset(&fixup, ftr_fixup_test4_alt + 2); | |
362e7701 ME |
382 | |
383 | /* Sanity check */ | |
c69a48cd | 384 | check(memcmp(ftr_fixup_test4, ftr_fixup_test4_orig, size) == 0); |
362e7701 ME |
385 | |
386 | /* Check we don't patch if the value matches */ | |
387 | patch_feature_section(flag, &fixup); | |
c69a48cd | 388 | check(memcmp(ftr_fixup_test4, ftr_fixup_test4_orig, size) == 0); |
362e7701 ME |
389 | |
390 | /* Check we do patch if the value doesn't match */ | |
391 | patch_feature_section(0, &fixup); | |
c69a48cd | 392 | check(memcmp(ftr_fixup_test4, ftr_fixup_test4_expected, size) == 0); |
362e7701 ME |
393 | |
394 | /* Check we do patch if the mask doesn't match */ | |
c69a48cd DA |
395 | memcpy(ftr_fixup_test4, ftr_fixup_test4_orig, size); |
396 | check(memcmp(ftr_fixup_test4, ftr_fixup_test4_orig, size) == 0); | |
362e7701 | 397 | patch_feature_section(~flag, &fixup); |
c69a48cd | 398 | check(memcmp(ftr_fixup_test4, ftr_fixup_test4_expected, size) == 0); |
362e7701 ME |
399 | } |
400 | ||
401 | static void test_alternative_case_with_branch(void) | |
402 | { | |
c69a48cd DA |
403 | extern unsigned int ftr_fixup_test5[]; |
404 | extern unsigned int end_ftr_fixup_test5[]; | |
405 | extern unsigned int ftr_fixup_test5_expected[]; | |
406 | int size = end_ftr_fixup_test5 - ftr_fixup_test5; | |
362e7701 | 407 | |
c69a48cd | 408 | check(memcmp(ftr_fixup_test5, ftr_fixup_test5_expected, size) == 0); |
362e7701 ME |
409 | } |
410 | ||
411 | static void test_alternative_case_with_external_branch(void) | |
412 | { | |
c69a48cd DA |
413 | extern unsigned int ftr_fixup_test6[]; |
414 | extern unsigned int end_ftr_fixup_test6[]; | |
415 | extern unsigned int ftr_fixup_test6_expected[]; | |
416 | int size = end_ftr_fixup_test6 - ftr_fixup_test6; | |
362e7701 | 417 | |
c69a48cd | 418 | check(memcmp(ftr_fixup_test6, ftr_fixup_test6_expected, size) == 0); |
362e7701 ME |
419 | } |
420 | ||
421 | static void test_cpu_macros(void) | |
422 | { | |
c69a48cd DA |
423 | extern u8 ftr_fixup_test_FTR_macros[]; |
424 | extern u8 ftr_fixup_test_FTR_macros_expected[]; | |
425 | unsigned long size = ftr_fixup_test_FTR_macros_expected - | |
426 | ftr_fixup_test_FTR_macros; | |
362e7701 ME |
427 | |
428 | /* The fixups have already been done for us during boot */ | |
c69a48cd DA |
429 | check(memcmp(ftr_fixup_test_FTR_macros, |
430 | ftr_fixup_test_FTR_macros_expected, size) == 0); | |
362e7701 ME |
431 | } |
432 | ||
433 | static void test_fw_macros(void) | |
434 | { | |
435 | #ifdef CONFIG_PPC64 | |
c69a48cd DA |
436 | extern u8 ftr_fixup_test_FW_FTR_macros[]; |
437 | extern u8 ftr_fixup_test_FW_FTR_macros_expected[]; | |
438 | unsigned long size = ftr_fixup_test_FW_FTR_macros_expected - | |
439 | ftr_fixup_test_FW_FTR_macros; | |
362e7701 ME |
440 | |
441 | /* The fixups have already been done for us during boot */ | |
c69a48cd DA |
442 | check(memcmp(ftr_fixup_test_FW_FTR_macros, |
443 | ftr_fixup_test_FW_FTR_macros_expected, size) == 0); | |
362e7701 ME |
444 | #endif |
445 | } | |
446 | ||
2d1b2027 KG |
447 | static void test_lwsync_macros(void) |
448 | { | |
c69a48cd DA |
449 | extern u8 lwsync_fixup_test[]; |
450 | extern u8 end_lwsync_fixup_test[]; | |
451 | extern u8 lwsync_fixup_test_expected_LWSYNC[]; | |
452 | extern u8 lwsync_fixup_test_expected_SYNC[]; | |
453 | unsigned long size = end_lwsync_fixup_test - | |
454 | lwsync_fixup_test; | |
2d1b2027 KG |
455 | |
456 | /* The fixups have already been done for us during boot */ | |
457 | if (cur_cpu_spec->cpu_features & CPU_FTR_LWSYNC) { | |
c69a48cd DA |
458 | check(memcmp(lwsync_fixup_test, |
459 | lwsync_fixup_test_expected_LWSYNC, size) == 0); | |
2d1b2027 | 460 | } else { |
c69a48cd DA |
461 | check(memcmp(lwsync_fixup_test, |
462 | lwsync_fixup_test_expected_SYNC, size) == 0); | |
2d1b2027 KG |
463 | } |
464 | } | |
465 | ||
362e7701 ME |
466 | static int __init test_feature_fixups(void) |
467 | { | |
468 | printk(KERN_DEBUG "Running feature fixup self-tests ...\n"); | |
469 | ||
470 | test_basic_patching(); | |
471 | test_alternative_patching(); | |
472 | test_alternative_case_too_big(); | |
473 | test_alternative_case_too_small(); | |
474 | test_alternative_case_with_branch(); | |
475 | test_alternative_case_with_external_branch(); | |
476 | test_cpu_macros(); | |
477 | test_fw_macros(); | |
2d1b2027 | 478 | test_lwsync_macros(); |
362e7701 ME |
479 | |
480 | return 0; | |
481 | } | |
482 | late_initcall(test_feature_fixups); | |
483 | ||
484 | #endif /* CONFIG_FTR_FIXUP_SELFTEST */ |