From: Mike Rapoport <rppt@xxxxxxxxxxxxx>
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@xxxxxxxxxxxxx>
---
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
