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authorPaul Mackerras <paulus@samba.org>2006-08-25 00:56:07 -0400
committerPaul Mackerras <paulus@samba.org>2006-08-25 00:56:07 -0400
commitea0763a7e62f60f3e166327268a80f16ad806718 (patch)
treede54ec5e5d5a49b3cba81b096b7572852aa6f5a9 /arch/powerpc/kernel/machine_kexec_64.c
parent271c511db9d37d6797745adb1f151a8bd2838c6f (diff)
parentc85c41ad73c6db4cf4cc98c595cc5e2fdbdb53d5 (diff)
Merge branch 'merge'
Diffstat (limited to 'arch/powerpc/kernel/machine_kexec_64.c')
-rw-r--r--arch/powerpc/kernel/machine_kexec_64.c57
1 files changed, 0 insertions, 57 deletions
diff --git a/arch/powerpc/kernel/machine_kexec_64.c b/arch/powerpc/kernel/machine_kexec_64.c
index 4efdaa9d3f43..a24b09c27718 100644
--- a/arch/powerpc/kernel/machine_kexec_64.c
+++ b/arch/powerpc/kernel/machine_kexec_64.c
@@ -10,7 +10,6 @@
10 */ 10 */
11 11
12 12
13#include <linux/cpumask.h>
14#include <linux/kexec.h> 13#include <linux/kexec.h>
15#include <linux/smp.h> 14#include <linux/smp.h>
16#include <linux/thread_info.h> 15#include <linux/thread_info.h>
@@ -21,7 +20,6 @@
21#include <asm/machdep.h> 20#include <asm/machdep.h>
22#include <asm/cacheflush.h> 21#include <asm/cacheflush.h>
23#include <asm/paca.h> 22#include <asm/paca.h>
24#include <asm/lmb.h>
25#include <asm/mmu.h> 23#include <asm/mmu.h>
26#include <asm/sections.h> /* _end */ 24#include <asm/sections.h> /* _end */
27#include <asm/prom.h> 25#include <asm/prom.h>
@@ -383,58 +381,3 @@ static int __init kexec_setup(void)
383 return 0; 381 return 0;
384} 382}
385__initcall(kexec_setup); 383__initcall(kexec_setup);
386
387static int __init early_parse_crashk(char *p)
388{
389 unsigned long size;
390
391 if (!p)
392 return 1;
393
394 size = memparse(p, &p);
395
396 if (*p == '@')
397 crashk_res.start = memparse(p + 1, &p);
398 else
399 crashk_res.start = KDUMP_KERNELBASE;
400
401 crashk_res.end = crashk_res.start + size - 1;
402
403 return 0;
404}
405early_param("crashkernel", early_parse_crashk);
406
407void __init reserve_crashkernel(void)
408{
409 unsigned long size;
410
411 if (crashk_res.start == 0)
412 return;
413
414 /* We might have got these values via the command line or the
415 * device tree, either way sanitise them now. */
416
417 size = crashk_res.end - crashk_res.start + 1;
418
419 if (crashk_res.start != KDUMP_KERNELBASE)
420 printk("Crash kernel location must be 0x%x\n",
421 KDUMP_KERNELBASE);
422
423 crashk_res.start = KDUMP_KERNELBASE;
424 size = PAGE_ALIGN(size);
425 crashk_res.end = crashk_res.start + size - 1;
426
427 /* Crash kernel trumps memory limit */
428 if (memory_limit && memory_limit <= crashk_res.end) {
429 memory_limit = crashk_res.end + 1;
430 printk("Adjusted memory limit for crashkernel, now 0x%lx\n",
431 memory_limit);
432 }
433
434 lmb_reserve(crashk_res.start, size);
435}
436
437int overlaps_crashkernel(unsigned long start, unsigned long size)
438{
439 return (start + size) > crashk_res.start && start <= crashk_res.end;
440}