Messages in this thread Patch in this message | | | From | Mike Rapoport <> | Subject | [PATCH 3/3] x86/crash: remove crash_reserve_low_1M() | Date | Tue, 1 Jun 2021 10:53:54 +0300 |
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From: Mike Rapoport <rppt@linux.ibm.com>
The entire memory range under 1M is unconditionally reserved at setup_arch(), so there is no need for crash_reserve_low_1M() anymore.
Remove this function.
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> --- arch/x86/include/asm/crash.h | 6 ------ arch/x86/kernel/crash.c | 13 ------------- 2 files changed, 19 deletions(-)
diff --git a/arch/x86/include/asm/crash.h b/arch/x86/include/asm/crash.h index f58de66091e5..8b6bd63530dc 100644 --- a/arch/x86/include/asm/crash.h +++ b/arch/x86/include/asm/crash.h @@ -9,10 +9,4 @@ int crash_setup_memmap_entries(struct kimage *image, struct boot_params *params); void crash_smp_send_stop(void); -#ifdef CONFIG_KEXEC_CORE -void __init crash_reserve_low_1M(void); -#else -static inline void __init crash_reserve_low_1M(void) { } -#endif - #endif /* _ASM_X86_CRASH_H */ diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c index 54ce999ed321..e8326a8d1c5d 100644 --- a/arch/x86/kernel/crash.c +++ b/arch/x86/kernel/crash.c @@ -70,19 +70,6 @@ static inline void cpu_crash_vmclear_loaded_vmcss(void) rcu_read_unlock(); } -/* - * When the crashkernel option is specified, only use the low - * 1M for the real mode trampoline. - */ -void __init crash_reserve_low_1M(void) -{ - if (cmdline_find_option(boot_command_line, "crashkernel", NULL, 0) < 0) - return; - - memblock_reserve(0, 1<<20); - pr_info("Reserving the low 1M of memory for crashkernel\n"); -} - #if defined(CONFIG_SMP) && defined(CONFIG_X86_LOCAL_APIC) static void kdump_nmi_callback(int cpu, struct pt_regs *regs) -- 2.28.0
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