Re: [PATCH v19 05/13] x86/setup: Add and use CRASH_BASE_ALIGN
From: <hidden>
Date: 2022-01-11 15:06:53
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kexec, linux-arm-kernel, linux-doc, lkml
On 12/28/21 7:26 AM, Zhen Lei wrote:
Add macro CRASH_BASE_ALIGN to indicate the alignment for crash kernel fixed region, in preparation for making partial implementation of reserve_crashkernel[_low]() generic. Signed-off-by: Zhen Lei <redacted>
> Acked-by: John Donnelly <redacted>
quoted hunk ↗ jump to hunk
--- arch/x86/kernel/setup.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 93d78aae1937db3..cb7f237a2ae0dfa 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c@@ -392,9 +392,12 @@ static void __init memblock_x86_reserve_range_setup_data(void) #ifdef CONFIG_KEXEC_CORE -/* 16M alignment for crash kernel regions */ +/* alignment for crash kernel dynamic regions */ #define CRASH_ALIGN SZ_16M +/* alignment for crash kernel fixed region */ +#define CRASH_BASE_ALIGN SZ_1M + /* * Keep the crash kernel below this limit. *@@ -509,7 +512,7 @@ static void __init reserve_crashkernel(void) } else { unsigned long long start; - start = memblock_phys_alloc_range(crash_size, SZ_1M, crash_base, + start = memblock_phys_alloc_range(crash_size, CRASH_BASE_ALIGN, crash_base, crash_base + crash_size); if (start != crash_base) { pr_info("crashkernel reservation failed - memory is in use.\n");