diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/kernel/setup.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index 8589a34c28de..4c04a86f075b 100644 --- a/arch/mips/kernel/setup.c +++ b/arch/mips/kernel/setup.c @@ -477,6 +477,11 @@ early_param("elfcorehdr", early_parse_elfcorehdr); #endif #ifdef CONFIG_KEXEC + +/* 64M alignment for crash kernel regions */ +#define CRASH_ALIGN SZ_64M +#define CRASH_ADDR_MAX SZ_512M + static void __init mips_parse_crashkernel(void) { unsigned long long total_mem; @@ -489,9 +494,22 @@ static void __init mips_parse_crashkernel(void) if (ret != 0 || crash_size <= 0) return; - if (!memblock_find_in_range(crash_base, crash_base + crash_size, crash_size, 1)) { - pr_warn("Invalid memory region reserved for crash kernel\n"); - return; + if (crash_base <= 0) { + crash_base = memblock_find_in_range(CRASH_ALIGN, CRASH_ADDR_MAX, + crash_size, CRASH_ALIGN); + if (!crash_base) { + pr_warn("crashkernel reservation failed - No suitable area found.\n"); + return; + } + } else { + unsigned long long start; + + start = memblock_find_in_range(crash_base, crash_base + crash_size, + crash_size, 1); + if (start != crash_base) { + pr_warn("Invalid memory region reserved for crash kernel\n"); + return; + } } crashk_res.start = crash_base; |