[PATCH v19 05/13] x86/setup: Add and use CRASH_BASE_ALIGN
From: Zhen Lei <hidden>
Date: 2021-12-28 13:29:24
Also in:
kexec, linux-arm-kernel, linux-devicetree, lkml
Subsystem:
the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
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> --- 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");
--
2.25.1