11 files changed, 21 insertions, 4 deletions

diff --git a/arch/loongarch/kernel/acpi.c b/arch/loongarch/kernel/acpi.c
index a54cd6fd3796..1367ca759468 100644
--- a/arch/loongarch/kernel/acpi.c
+++ b/arch/loongarch/kernel/acpi.c
@@ -10,6 +10,7 @@
 #include <linux/init.h>
 #include <linux/acpi.h>
 #include <linux/efi-bgrt.h>
+#include <linux/export.h>
 #include <linux/irq.h>
 #include <linux/irqdomain.h>
 #include <linux/memblock.h>
diff --git a/arch/loongarch/kernel/alternative.c b/arch/loongarch/kernel/alternative.c
index 4ad13847e962..0e0c766df1e3 100644
--- a/arch/loongarch/kernel/alternative.c
+++ b/arch/loongarch/kernel/alternative.c
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
+#include <linux/export.h>
 #include <linux/mm.h>
 #include <linux/module.h>
 #include <asm/alternative.h>
diff --git a/arch/loongarch/kernel/efi.c b/arch/loongarch/kernel/efi.c
index de21e72759ee..860a3bc030e0 100644
--- a/arch/loongarch/kernel/efi.c
+++ b/arch/loongarch/kernel/efi.c
@@ -144,6 +144,18 @@ void __init efi_init(void)
 		if (efi_memmap_init_early(&data) < 0)
 			panic("Unable to map EFI memory map.\n");
 
+		/*
+		 * Reserve the physical memory region occupied by the EFI
+		 * memory map table (header + descriptors). This is crucial
+		 * for kdump, as the kdump kernel relies on this original
+		 * memmap passed by the bootloader. Without reservation,
+		 * this region could be overwritten by the primary kernel.
+		 * Also, set the EFI_PRESERVE_BS_REGIONS flag to indicate that
+		 * critical boot services code/data regions like this are preserved.
+		 */
+		memblock_reserve((phys_addr_t)boot_memmap, sizeof(*tbl) + data.size);
+		set_bit(EFI_PRESERVE_BS_REGIONS, &efi.flags);
+
 		early_memunmap(tbl, sizeof(*tbl));
 	}
 
diff --git a/arch/loongarch/kernel/elf.c b/arch/loongarch/kernel/elf.c
index 0fa81ced28dc..3d98c6aa00db 100644
--- a/arch/loongarch/kernel/elf.c
+++ b/arch/loongarch/kernel/elf.c
@@ -6,7 +6,6 @@
 
 #include <linux/binfmts.h>
 #include <linux/elf.h>
-#include <linux/export.h>
 #include <linux/sched.h>
 
 #include <asm/cpu-features.h>
diff --git a/arch/loongarch/kernel/kfpu.c b/arch/loongarch/kernel/kfpu.c
index 4c476904227f..141b49bd989c 100644
--- a/arch/loongarch/kernel/kfpu.c
+++ b/arch/loongarch/kernel/kfpu.c
@@ -4,6 +4,7 @@
  */
 
 #include <linux/cpu.h>
+#include <linux/export.h>
 #include <linux/init.h>
 #include <asm/fpu.h>
 #include <asm/smp.h>
diff --git a/arch/loongarch/kernel/paravirt.c b/arch/loongarch/kernel/paravirt.c
index e5a39bbad078..b1b51f920b23 100644
--- a/arch/loongarch/kernel/paravirt.c
+++ b/arch/loongarch/kernel/paravirt.c
@@ -1,5 +1,4 @@
 // SPDX-License-Identifier: GPL-2.0
-#include <linux/export.h>
 #include <linux/types.h>
 #include <linux/interrupt.h>
 #include <linux/irq_work.h>
diff --git a/arch/loongarch/kernel/time.c b/arch/loongarch/kernel/time.c
index bc75a3a69fc8..367906b10f81 100644
--- a/arch/loongarch/kernel/time.c
+++ b/arch/loongarch/kernel/time.c
@@ -102,7 +102,7 @@ static int constant_timer_next_event(unsigned long delta, struct clock_event_dev
 	return 0;
 }
 
-static unsigned long __init get_loops_per_jiffy(void)
+static unsigned long get_loops_per_jiffy(void)
 {
 	unsigned long lpj = (unsigned long)const_clock_freq;
 
diff --git a/arch/loongarch/kernel/traps.c b/arch/loongarch/kernel/traps.c
index 47fc2de6d150..3d9be6ca7ec5 100644
--- a/arch/loongarch/kernel/traps.c
+++ b/arch/loongarch/kernel/traps.c
@@ -13,6 +13,7 @@
 #include <linux/kernel.h>
 #include <linux/kexec.h>
 #include <linux/module.h>
+#include <linux/export.h>
 #include <linux/extable.h>
 #include <linux/mm.h>
 #include <linux/sched/mm.h>
diff --git a/arch/loongarch/kernel/unwind_guess.c b/arch/loongarch/kernel/unwind_guess.c
index 98379b7d4147..08d7951b2f60 100644
--- a/arch/loongarch/kernel/unwind_guess.c
+++ b/arch/loongarch/kernel/unwind_guess.c
@@ -3,6 +3,7 @@
  * Copyright (C) 2022 Loongson Technology Corporation Limited
  */
 #include <asm/unwind.h>
+#include <linux/export.h>
 
 unsigned long unwind_get_return_address(struct unwind_state *state)
 {
diff --git a/arch/loongarch/kernel/unwind_orc.c b/arch/loongarch/kernel/unwind_orc.c
index d623935a7547..0005be49b056 100644
--- a/arch/loongarch/kernel/unwind_orc.c
+++ b/arch/loongarch/kernel/unwind_orc.c
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0-only
-#include <linux/objtool.h>
+#include <linux/export.h>
 #include <linux/module.h>
+#include <linux/objtool.h>
 #include <linux/sort.h>
 #include <asm/exception.h>
 #include <asm/orc_header.h>
diff --git a/arch/loongarch/kernel/unwind_prologue.c b/arch/loongarch/kernel/unwind_prologue.c
index 929ae240280a..729e775bd40d 100644
--- a/arch/loongarch/kernel/unwind_prologue.c
+++ b/arch/loongarch/kernel/unwind_prologue.c
@@ -3,6 +3,7 @@
  * Copyright (C) 2022 Loongson Technology Corporation Limited
  */
 #include <linux/cpumask.h>
+#include <linux/export.h>
 #include <linux/ftrace.h>
 #include <linux/kallsyms.h>