diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
index 212456b27468f94ab75b16a026b9fa2d69bb01bf..21092405a7046ece7c79520137336d401e22e496 100644
--- a/arch/loongarch/Kconfig
+++ b/arch/loongarch/Kconfig
@@ -70,7 +70,6 @@ config LOONGARCH
 	select GENERIC_TIME_VSYSCALL
 	select GPIOLIB
 	select HAVE_ARCH_AUDITSYSCALL
-	select HAVE_ARCH_COMPILER_H
 	select HAVE_ARCH_MMAP_RND_BITS if MMU
 	select HAVE_ARCH_SECCOMP_FILTER
 	select HAVE_ARCH_TRACEHOOK
diff --git a/arch/loongarch/include/asm/atomic.h b/arch/loongarch/include/asm/atomic.h
index 12d6a9944467e678efd9b60267afd1d0829c6ce1..98a24f2217464f05eb8799f08bc1946c51ed27da 100644
--- a/arch/loongarch/include/asm/atomic.h
+++ b/arch/loongarch/include/asm/atomic.h
@@ -12,7 +12,6 @@
 #include <linux/types.h>
 #include <asm/barrier.h>
 #include <asm/cmpxchg.h>
-#include <asm/compiler.h>
 
 #if __SIZEOF_LONG__ == 4
 #define __LL		"ll.w	"
@@ -165,8 +164,7 @@ static inline int arch_atomic_sub_if_positive(int i, atomic_t *v)
 		"	beqz	%1, 1b					\n"
 		"2:							\n"
 		__WEAK_LLSC_MB
-		: "=&r" (result), "=&r" (temp),
-		  "+" GCC_OFF_SMALL_ASM() (v->counter)
+		: "=&r" (result), "=&r" (temp), "+ZC" (v->counter)
 		: "I" (-i));
 	} else {
 		__asm__ __volatile__(
@@ -178,8 +176,7 @@ static inline int arch_atomic_sub_if_positive(int i, atomic_t *v)
 		"	beqz	%1, 1b					\n"
 		"2:							\n"
 		__WEAK_LLSC_MB
-		: "=&r" (result), "=&r" (temp),
-		  "+" GCC_OFF_SMALL_ASM() (v->counter)
+		: "=&r" (result), "=&r" (temp), "+ZC" (v->counter)
 		: "r" (i));
 	}
 
@@ -328,8 +325,7 @@ static inline long arch_atomic64_sub_if_positive(long i, atomic64_t *v)
 		"	beqz	%1, 1b					\n"
 		"2:							\n"
 		__WEAK_LLSC_MB
-		: "=&r" (result), "=&r" (temp),
-		  "+" GCC_OFF_SMALL_ASM() (v->counter)
+		: "=&r" (result), "=&r" (temp), "+ZC" (v->counter)
 		: "I" (-i));
 	} else {
 		__asm__ __volatile__(
@@ -341,8 +337,7 @@ static inline long arch_atomic64_sub_if_positive(long i, atomic64_t *v)
 		"	beqz	%1, 1b					\n"
 		"2:							\n"
 		__WEAK_LLSC_MB
-		: "=&r" (result), "=&r" (temp),
-		  "+" GCC_OFF_SMALL_ASM() (v->counter)
+		: "=&r" (result), "=&r" (temp), "+ZC" (v->counter)
 		: "r" (i));
 	}
 
diff --git a/arch/loongarch/include/asm/compiler.h b/arch/loongarch/include/asm/compiler.h
deleted file mode 100644
index 657cebe70acee61c1f5530ca5ba22ba856e20b4f..0000000000000000000000000000000000000000
--- a/arch/loongarch/include/asm/compiler.h
+++ /dev/null
@@ -1,15 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
- */
-#ifndef _ASM_COMPILER_H
-#define _ASM_COMPILER_H
-
-#define GCC_OFF_SMALL_ASM() "ZC"
-
-#define LOONGARCH_ISA_LEVEL "loongarch"
-#define LOONGARCH_ISA_ARCH_LEVEL "arch=loongarch"
-#define LOONGARCH_ISA_LEVEL_RAW loongarch
-#define LOONGARCH_ISA_ARCH_LEVEL_RAW LOONGARCH_ISA_LEVEL_RAW
-
-#endif /* _ASM_COMPILER_H */
diff --git a/arch/loongarch/include/asm/futex.h b/arch/loongarch/include/asm/futex.h
index 837659335fb1510da7c6aaee87a9fc7877b9f70c..feb6658c84ff8b04e18a684ee9cddca18bfb1c33 100644
--- a/arch/loongarch/include/asm/futex.h
+++ b/arch/loongarch/include/asm/futex.h
@@ -8,7 +8,6 @@
 #include <linux/futex.h>
 #include <linux/uaccess.h>
 #include <asm/barrier.h>
-#include <asm/compiler.h>
 #include <asm/errno.h>
 
 #define __futex_atomic_op(insn, ret, oldval, uaddr, oparg)		\
@@ -95,8 +94,8 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, u32 oldval, u32 newv
 	"	"__UA_ADDR "\t1b, 4b				\n"
 	"	"__UA_ADDR "\t2b, 4b				\n"
 	"	.previous					\n"
-	: "+r" (ret), "=&r" (val), "=" GCC_OFF_SMALL_ASM() (*uaddr)
-	: GCC_OFF_SMALL_ASM() (*uaddr), "Jr" (oldval), "Jr" (newval),
+	: "+r" (ret), "=&r" (val), "=ZC" (*uaddr)
+	: "ZC" (*uaddr), "Jr" (oldval), "Jr" (newval),
 	  "i" (-EFAULT)
 	: "memory", "t0");
 
diff --git a/arch/loongarch/include/asm/irqflags.h b/arch/loongarch/include/asm/irqflags.h
index 52121cd791fe1a0081e38829fef5cb8ff8ae514d..319a8c616f1f5b60097c30a24f9f24682b9282cc 100644
--- a/arch/loongarch/include/asm/irqflags.h
+++ b/arch/loongarch/include/asm/irqflags.h
@@ -9,7 +9,6 @@
 
 #include <linux/compiler.h>
 #include <linux/stringify.h>
-#include <asm/compiler.h>
 #include <asm/loongarch.h>
 
 static inline void arch_local_irq_enable(void)
diff --git a/arch/loongarch/include/asm/local.h b/arch/loongarch/include/asm/local.h
index 2052a2267337d7bb1d3628e040ae3010e39e9d94..65fbbae9fc4da7b82f02d97499b40285491a2f44 100644
--- a/arch/loongarch/include/asm/local.h
+++ b/arch/loongarch/include/asm/local.h
@@ -9,7 +9,6 @@
 #include <linux/bitops.h>
 #include <linux/atomic.h>
 #include <asm/cmpxchg.h>
-#include <asm/compiler.h>
 
 typedef struct {
 	atomic_long_t a;
diff --git a/arch/loongarch/kernel/reset.c b/arch/loongarch/kernel/reset.c
index 2b86469e471859ad0f1c595ce460e675a41d6924..800c965a17eaa81dc5b5d94064e7df5a802c4b1f 100644
--- a/arch/loongarch/kernel/reset.c
+++ b/arch/loongarch/kernel/reset.c
@@ -13,7 +13,6 @@
 #include <linux/console.h>
 
 #include <acpi/reboot.h>
-#include <asm/compiler.h>
 #include <asm/idle.h>
 #include <asm/loongarch.h>
 #include <asm/reboot.h>
diff --git a/arch/loongarch/lib/delay.c b/arch/loongarch/lib/delay.c
index 5d856694fcfe1091784959a89386a10fb2b90375..831d4761f385a48dc59041baed79025b111d5c49 100644
--- a/arch/loongarch/lib/delay.c
+++ b/arch/loongarch/lib/delay.c
@@ -7,7 +7,6 @@
 #include <linux/smp.h>
 #include <linux/timex.h>
 
-#include <asm/compiler.h>
 #include <asm/processor.h>
 
 void __delay(unsigned long cycles)