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authorIngo Molnar <mingo@kernel.org>2015-03-23 06:13:15 -0400
committerIngo Molnar <mingo@kernel.org>2015-03-23 06:13:15 -0400
commite4518ab90f63cd5bea3ddc15341162debc34442b (patch)
treefcefaeced9562de840bbf11ec2ffc95e1d9a571f /arch/x86/boot
parentc56716af8d27ca8dd6e45445ae1c0a05fd9753a6 (diff)
parentbc465aa9d045feb0e13b4a8f32cc33c1943f62d6 (diff)
Merge tag 'v4.0-rc5' into x86/asm, to resolve conflicts
Conflicts: arch/x86/kernel/entry_64.S Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/boot')
-rw-r--r--arch/x86/boot/compressed/aslr.c34
-rw-r--r--arch/x86/boot/compressed/misc.c3
-rw-r--r--arch/x86/boot/compressed/misc.h6
3 files changed, 4 insertions, 39 deletions
diff --git a/arch/x86/boot/compressed/aslr.c b/arch/x86/boot/compressed/aslr.c
index 7083c16cccba..bb1376381985 100644
--- a/arch/x86/boot/compressed/aslr.c
+++ b/arch/x86/boot/compressed/aslr.c
@@ -14,13 +14,6 @@
14static const char build_str[] = UTS_RELEASE " (" LINUX_COMPILE_BY "@" 14static const char build_str[] = UTS_RELEASE " (" LINUX_COMPILE_BY "@"
15 LINUX_COMPILE_HOST ") (" LINUX_COMPILER ") " UTS_VERSION; 15 LINUX_COMPILE_HOST ") (" LINUX_COMPILER ") " UTS_VERSION;
16 16
17struct kaslr_setup_data {
18 __u64 next;
19 __u32 type;
20 __u32 len;
21 __u8 data[1];
22} kaslr_setup_data;
23
24#define I8254_PORT_CONTROL 0x43 17#define I8254_PORT_CONTROL 0x43
25#define I8254_PORT_COUNTER0 0x40 18#define I8254_PORT_COUNTER0 0x40
26#define I8254_CMD_READBACK 0xC0 19#define I8254_CMD_READBACK 0xC0
@@ -302,29 +295,7 @@ static unsigned long find_random_addr(unsigned long minimum,
302 return slots_fetch_random(); 295 return slots_fetch_random();
303} 296}
304 297
305static void add_kaslr_setup_data(struct boot_params *params, __u8 enabled) 298unsigned char *choose_kernel_location(unsigned char *input,
306{
307 struct setup_data *data;
308
309 kaslr_setup_data.type = SETUP_KASLR;
310 kaslr_setup_data.len = 1;
311 kaslr_setup_data.next = 0;
312 kaslr_setup_data.data[0] = enabled;
313
314 data = (struct setup_data *)(unsigned long)params->hdr.setup_data;
315
316 while (data && data->next)
317 data = (struct setup_data *)(unsigned long)data->next;
318
319 if (data)
320 data->next = (unsigned long)&kaslr_setup_data;
321 else
322 params->hdr.setup_data = (unsigned long)&kaslr_setup_data;
323
324}
325
326unsigned char *choose_kernel_location(struct boot_params *params,
327 unsigned char *input,
328 unsigned long input_size, 299 unsigned long input_size,
329 unsigned char *output, 300 unsigned char *output,
330 unsigned long output_size) 301 unsigned long output_size)
@@ -335,17 +306,14 @@ unsigned char *choose_kernel_location(struct boot_params *params,
335#ifdef CONFIG_HIBERNATION 306#ifdef CONFIG_HIBERNATION
336 if (!cmdline_find_option_bool("kaslr")) { 307 if (!cmdline_find_option_bool("kaslr")) {
337 debug_putstr("KASLR disabled by default...\n"); 308 debug_putstr("KASLR disabled by default...\n");
338 add_kaslr_setup_data(params, 0);
339 goto out; 309 goto out;
340 } 310 }
341#else 311#else
342 if (cmdline_find_option_bool("nokaslr")) { 312 if (cmdline_find_option_bool("nokaslr")) {
343 debug_putstr("KASLR disabled by cmdline...\n"); 313 debug_putstr("KASLR disabled by cmdline...\n");
344 add_kaslr_setup_data(params, 0);
345 goto out; 314 goto out;
346 } 315 }
347#endif 316#endif
348 add_kaslr_setup_data(params, 1);
349 317
350 /* Record the various known unsafe memory ranges. */ 318 /* Record the various known unsafe memory ranges. */
351 mem_avoid_init((unsigned long)input, input_size, 319 mem_avoid_init((unsigned long)input, input_size,
diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c
index 5903089c818f..a950864a64da 100644
--- a/arch/x86/boot/compressed/misc.c
+++ b/arch/x86/boot/compressed/misc.c
@@ -401,8 +401,7 @@ asmlinkage __visible void *decompress_kernel(void *rmode, memptr heap,
401 * the entire decompressed kernel plus relocation table, or the 401 * the entire decompressed kernel plus relocation table, or the
402 * entire decompressed kernel plus .bss and .brk sections. 402 * entire decompressed kernel plus .bss and .brk sections.
403 */ 403 */
404 output = choose_kernel_location(real_mode, input_data, input_len, 404 output = choose_kernel_location(input_data, input_len, output,
405 output,
406 output_len > run_size ? output_len 405 output_len > run_size ? output_len
407 : run_size); 406 : run_size);
408 407
diff --git a/arch/x86/boot/compressed/misc.h b/arch/x86/boot/compressed/misc.h
index ee3576b2666b..04477d68403f 100644
--- a/arch/x86/boot/compressed/misc.h
+++ b/arch/x86/boot/compressed/misc.h
@@ -57,8 +57,7 @@ int cmdline_find_option_bool(const char *option);
57 57
58#if CONFIG_RANDOMIZE_BASE 58#if CONFIG_RANDOMIZE_BASE
59/* aslr.c */ 59/* aslr.c */
60unsigned char *choose_kernel_location(struct boot_params *params, 60unsigned char *choose_kernel_location(unsigned char *input,
61 unsigned char *input,
62 unsigned long input_size, 61 unsigned long input_size,
63 unsigned char *output, 62 unsigned char *output,
64 unsigned long output_size); 63 unsigned long output_size);
@@ -66,8 +65,7 @@ unsigned char *choose_kernel_location(struct boot_params *params,
66bool has_cpuflag(int flag); 65bool has_cpuflag(int flag);
67#else 66#else
68static inline 67static inline
69unsigned char *choose_kernel_location(struct boot_params *params, 68unsigned char *choose_kernel_location(unsigned char *input,
70 unsigned char *input,
71 unsigned long input_size, 69 unsigned long input_size,
72 unsigned char *output, 70 unsigned char *output,
73 unsigned long output_size) 71 unsigned long output_size)