diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
index 3bc5b911ae1a..c7dd6ad779af 100644
--- a/arch/loongarch/Kconfig
+++ b/arch/loongarch/Kconfig
@@ -39,6 +39,7 @@ config LOONGARCH
 	select ARCH_INLINE_SPIN_UNLOCK_BH if !PREEMPTION
 	select ARCH_INLINE_SPIN_UNLOCK_IRQ if !PREEMPTION
 	select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE if !PREEMPTION
+	select ARCH_KEEP_MEMBLOCK
 	select ARCH_MIGHT_HAVE_PC_PARPORT
 	select ARCH_MIGHT_HAVE_PC_SERIO
 	select ARCH_SPARSEMEM_ENABLE
diff --git a/arch/loongarch/include/asm/acpi.h b/arch/loongarch/include/asm/acpi.h
index c5108213876c..17162f494b9b 100644
--- a/arch/loongarch/include/asm/acpi.h
+++ b/arch/loongarch/include/asm/acpi.h
@@ -15,7 +15,7 @@ extern int acpi_pci_disabled;
 extern int acpi_noirq;
 
 #define acpi_os_ioremap acpi_os_ioremap
-void __init __iomem *acpi_os_ioremap(acpi_physical_address phys, acpi_size size);
+void __iomem *acpi_os_ioremap(acpi_physical_address phys, acpi_size size);
 
 static inline void disable_acpi(void)
 {
diff --git a/arch/loongarch/kernel/acpi.c b/arch/loongarch/kernel/acpi.c
index f1c928648a4a..335398482038 100644
--- a/arch/loongarch/kernel/acpi.c
+++ b/arch/loongarch/kernel/acpi.c
@@ -48,7 +48,7 @@ void __init __acpi_unmap_table(void __iomem *map, unsigned long size)
 	early_memunmap(map, size);
 }
 
-void __init __iomem *acpi_os_ioremap(acpi_physical_address phys, acpi_size size)
+void __iomem *acpi_os_ioremap(acpi_physical_address phys, acpi_size size)
 {
 	if (!memblock_is_memory(phys))
 		return ioremap(phys, size);