diff --git a/arch/s390/include/asm/irqflags.h b/arch/s390/include/asm/irqflags.h
index bcab456dfb80..6eb6de6a99f2 100644
--- a/arch/s390/include/asm/irqflags.h
+++ b/arch/s390/include/asm/irqflags.h
@@ -37,18 +37,24 @@ static __always_inline void __arch_local_irq_ssm(unsigned long flags)
 	asm volatile("ssm   %0" : : "Q" (flags) : "memory");
 }
 
-#ifdef CONFIG_KMSAN
-#define arch_local_irq_attributes noinline notrace __no_sanitize_memory __maybe_unused
+#if defined(CONFIG_KMSAN) && !defined(__DECOMPRESSOR)
+unsigned long arch_local_save_flags(void);
+unsigned long arch_local_irq_save(void);
+void arch_local_irq_enable_external(void);
+void arch_local_irq_enable(void);
 #else
-#define arch_local_irq_attributes __always_inline
+#define arch_local_save_flags		__arch_local_save_flags
+#define arch_local_irq_save		__arch_local_irq_save
+#define arch_local_irq_enable_external	__arch_local_irq_enable_external
+#define arch_local_irq_enable		__arch_local_irq_enable
 #endif
 
-static arch_local_irq_attributes unsigned long arch_local_save_flags(void)
+static __always_inline unsigned long __arch_local_save_flags(void)
 {
 	return __arch_local_irq_stnsm(0xff);
 }
 
-static arch_local_irq_attributes unsigned long arch_local_irq_save(void)
+static __always_inline unsigned long __arch_local_irq_save(void)
 {
 	return __arch_local_irq_stnsm(0xfc);
 }
@@ -58,12 +64,12 @@ static __always_inline void arch_local_irq_disable(void)
 	arch_local_irq_save();
 }
 
-static arch_local_irq_attributes void arch_local_irq_enable_external(void)
+static __always_inline void __arch_local_irq_enable_external(void)
 {
 	__arch_local_irq_stosm(0x01);
 }
 
-static arch_local_irq_attributes void arch_local_irq_enable(void)
+static __always_inline void __arch_local_irq_enable(void)
 {
 	__arch_local_irq_stosm(0x03);
 }
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index 6c88476d79a3..14ef03cb2f72 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -72,6 +72,7 @@ obj-$(CONFIG_STACKPROTECTOR)	+= stackprotector.o
 obj-$(CONFIG_KEXEC_FILE)	+= machine_kexec_file.o kexec_image.o
 obj-$(CONFIG_KEXEC_FILE)	+= kexec_elf.o
 obj-$(CONFIG_CERT_STORE)	+= cert_store.o
+obj-$(CONFIG_KMSAN)		+= irqflags.o
 
 obj-$(CONFIG_PERF_EVENTS)	+= perf_event.o
 obj-$(CONFIG_PERF_EVENTS)	+= perf_cpum_cf.o perf_cpum_sf.o
diff --git a/arch/s390/kernel/irqflags.c b/arch/s390/kernel/irqflags.c
new file mode 100644
index 000000000000..e192f59f8918
--- /dev/null
+++ b/arch/s390/kernel/irqflags.c
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/export.h>
+#include <asm/irqflags.h>
+
+noinstr unsigned long arch_local_save_flags(void)
+{
+	return __arch_local_save_flags();
+}
+EXPORT_SYMBOL(arch_local_save_flags);
+
+noinstr unsigned long arch_local_irq_save(void)
+{
+	return __arch_local_irq_save();
+}
+EXPORT_SYMBOL(arch_local_irq_save);
+
+noinstr void arch_local_irq_enable_external(void)
+{
+	__arch_local_irq_enable_external();
+}
+EXPORT_SYMBOL(arch_local_irq_enable_external);
+
+noinstr void arch_local_irq_enable(void)
+{
+	__arch_local_irq_enable();
+}
+EXPORT_SYMBOL(arch_local_irq_enable);