diff options
| author | Xunlei Pang <xlpang@redhat.com> | 2017-01-23 14:48:23 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-01-23 08:57:55 +0100 |
| commit | a8d4c8246b290ce97f88752d833804843041ac84 (patch) | |
| tree | e5d51b3e7fc08733e17b7d4390c423d105020776 /arch/x86 | |
| parent | 7a308bb3016f57e5be11a677d15b821536419d36 (diff) | |
| download | linux-a8d4c8246b290ce97f88752d833804843041ac84.tar.gz linux-a8d4c8246b290ce97f88752d833804843041ac84.tar.xz | |
x86/crash: Update the stale comment in reserve_crashkernel()
CRASH_KERNEL_ADDR_MAX has been missing for a long time,
update it with a more detailed explanation.
Signed-off-by: Xunlei Pang <xlpang@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Baoquan He <bhe@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Young <dyoung@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert LeBlanc <robert@leblancnet.us>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kexec@lists.infradead.org
Link: http://lkml.kernel.org/r/1485154103-18426-1-git-send-email-xlpang@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/setup.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 4cfba947d774..eb69b14dbfc8 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -575,7 +575,9 @@ static void __init reserve_crashkernel(void) /* 0 means: find the address automatically */ if (crash_base <= 0) { /* - * kexec want bzImage is below CRASH_KERNEL_ADDR_MAX + * Set CRASH_ADDR_LOW_MAX upper bound for crash memory, + * as old kexec-tools loads bzImage below that, unless + * "crashkernel=size[KMG],high" is specified. */ crash_base = memblock_find_in_range(CRASH_ALIGN, high ? CRASH_ADDR_HIGH_MAX |