diff --git a/crypto/Kconfig b/crypto/Kconfig
index ca3b02dcbbfa..4fbc9c080ca9 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1547,6 +1547,7 @@ config CRYPTO_SERPENT_AVX2_X86_64
 config CRYPTO_SM4
 	tristate "SM4 cipher algorithm"
 	select CRYPTO_ALGAPI
+	select CRYPTO_LIB_SM4
 	help
 	  SM4 cipher algorithms (OSCCA GB/T 32907-2016).
 
diff --git a/crypto/sm4_generic.c b/crypto/sm4_generic.c
index 016dbc595705..d19d01f852a9 100644
--- a/crypto/sm4_generic.c
+++ b/crypto/sm4_generic.c
@@ -16,139 +16,13 @@
 #include <asm/byteorder.h>
 #include <asm/unaligned.h>
 
-static const u32 fk[4] = {
-	0xa3b1bac6, 0x56aa3350, 0x677d9197, 0xb27022dc
-};
-
-static const u8 sbox[256] = {
-	0xd6, 0x90, 0xe9, 0xfe, 0xcc, 0xe1, 0x3d, 0xb7,
-	0x16, 0xb6, 0x14, 0xc2, 0x28, 0xfb, 0x2c, 0x05,
-	0x2b, 0x67, 0x9a, 0x76, 0x2a, 0xbe, 0x04, 0xc3,
-	0xaa, 0x44, 0x13, 0x26, 0x49, 0x86, 0x06, 0x99,
-	0x9c, 0x42, 0x50, 0xf4, 0x91, 0xef, 0x98, 0x7a,
-	0x33, 0x54, 0x0b, 0x43, 0xed, 0xcf, 0xac, 0x62,
-	0xe4, 0xb3, 0x1c, 0xa9, 0xc9, 0x08, 0xe8, 0x95,
-	0x80, 0xdf, 0x94, 0xfa, 0x75, 0x8f, 0x3f, 0xa6,
-	0x47, 0x07, 0xa7, 0xfc, 0xf3, 0x73, 0x17, 0xba,
-	0x83, 0x59, 0x3c, 0x19, 0xe6, 0x85, 0x4f, 0xa8,
-	0x68, 0x6b, 0x81, 0xb2, 0x71, 0x64, 0xda, 0x8b,
-	0xf8, 0xeb, 0x0f, 0x4b, 0x70, 0x56, 0x9d, 0x35,
-	0x1e, 0x24, 0x0e, 0x5e, 0x63, 0x58, 0xd1, 0xa2,
-	0x25, 0x22, 0x7c, 0x3b, 0x01, 0x21, 0x78, 0x87,
-	0xd4, 0x00, 0x46, 0x57, 0x9f, 0xd3, 0x27, 0x52,
-	0x4c, 0x36, 0x02, 0xe7, 0xa0, 0xc4, 0xc8, 0x9e,
-	0xea, 0xbf, 0x8a, 0xd2, 0x40, 0xc7, 0x38, 0xb5,
-	0xa3, 0xf7, 0xf2, 0xce, 0xf9, 0x61, 0x15, 0xa1,
-	0xe0, 0xae, 0x5d, 0xa4, 0x9b, 0x34, 0x1a, 0x55,
-	0xad, 0x93, 0x32, 0x30, 0xf5, 0x8c, 0xb1, 0xe3,
-	0x1d, 0xf6, 0xe2, 0x2e, 0x82, 0x66, 0xca, 0x60,
-	0xc0, 0x29, 0x23, 0xab, 0x0d, 0x53, 0x4e, 0x6f,
-	0xd5, 0xdb, 0x37, 0x45, 0xde, 0xfd, 0x8e, 0x2f,
-	0x03, 0xff, 0x6a, 0x72, 0x6d, 0x6c, 0x5b, 0x51,
-	0x8d, 0x1b, 0xaf, 0x92, 0xbb, 0xdd, 0xbc, 0x7f,
-	0x11, 0xd9, 0x5c, 0x41, 0x1f, 0x10, 0x5a, 0xd8,
-	0x0a, 0xc1, 0x31, 0x88, 0xa5, 0xcd, 0x7b, 0xbd,
-	0x2d, 0x74, 0xd0, 0x12, 0xb8, 0xe5, 0xb4, 0xb0,
-	0x89, 0x69, 0x97, 0x4a, 0x0c, 0x96, 0x77, 0x7e,
-	0x65, 0xb9, 0xf1, 0x09, 0xc5, 0x6e, 0xc6, 0x84,
-	0x18, 0xf0, 0x7d, 0xec, 0x3a, 0xdc, 0x4d, 0x20,
-	0x79, 0xee, 0x5f, 0x3e, 0xd7, 0xcb, 0x39, 0x48
-};
-
-static const u32 ck[] = {
-	0x00070e15, 0x1c232a31, 0x383f464d, 0x545b6269,
-	0x70777e85, 0x8c939aa1, 0xa8afb6bd, 0xc4cbd2d9,
-	0xe0e7eef5, 0xfc030a11, 0x181f262d, 0x343b4249,
-	0x50575e65, 0x6c737a81, 0x888f969d, 0xa4abb2b9,
-	0xc0c7ced5, 0xdce3eaf1, 0xf8ff060d, 0x141b2229,
-	0x30373e45, 0x4c535a61, 0x686f767d, 0x848b9299,
-	0xa0a7aeb5, 0xbcc3cad1, 0xd8dfe6ed, 0xf4fb0209,
-	0x10171e25, 0x2c333a41, 0x484f565d, 0x646b7279
-};
-
-static u32 sm4_t_non_lin_sub(u32 x)
-{
-	int i;
-	u8 *b = (u8 *)&x;
-
-	for (i = 0; i < 4; ++i)
-		b[i] = sbox[b[i]];
-
-	return x;
-}
-
-static u32 sm4_key_lin_sub(u32 x)
-{
-	return x ^ rol32(x, 13) ^ rol32(x, 23);
-
-}
-
-static u32 sm4_enc_lin_sub(u32 x)
-{
-	return x ^ rol32(x, 2) ^ rol32(x, 10) ^ rol32(x, 18) ^ rol32(x, 24);
-}
-
-static u32 sm4_key_sub(u32 x)
-{
-	return sm4_key_lin_sub(sm4_t_non_lin_sub(x));
-}
-
-static u32 sm4_enc_sub(u32 x)
-{
-	return sm4_enc_lin_sub(sm4_t_non_lin_sub(x));
-}
-
-static u32 sm4_round(const u32 *x, const u32 rk)
-{
-	return x[0] ^ sm4_enc_sub(x[1] ^ x[2] ^ x[3] ^ rk);
-}
-
-
-/**
- * crypto_sm4_expand_key - Expands the SM4 key as described in GB/T 32907-2016
- * @ctx:	The location where the computed key will be stored.
- * @in_key:	The supplied key.
- * @key_len:	The length of the supplied key.
- *
- * Returns 0 on success. The function fails only if an invalid key size (or
- * pointer) is supplied.
- */
-int crypto_sm4_expand_key(struct crypto_sm4_ctx *ctx, const u8 *in_key,
-			  unsigned int key_len)
-{
-	u32 rk[4], t;
-	const u32 *key = (u32 *)in_key;
-	int i;
-
-	if (key_len != SM4_KEY_SIZE)
-		return -EINVAL;
-
-	for (i = 0; i < 4; ++i)
-		rk[i] = get_unaligned_be32(&key[i]) ^ fk[i];
-
-	for (i = 0; i < 32; ++i) {
-		t = rk[0] ^ sm4_key_sub(rk[1] ^ rk[2] ^ rk[3] ^ ck[i]);
-		ctx->rkey_enc[i] = t;
-		rk[0] = rk[1];
-		rk[1] = rk[2];
-		rk[2] = rk[3];
-		rk[3] = t;
-	}
-
-	for (i = 0; i < 32; ++i)
-		ctx->rkey_dec[i] = ctx->rkey_enc[31 - i];
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(crypto_sm4_expand_key);
-
 /**
  * crypto_sm4_set_key - Set the SM4 key.
  * @tfm:	The %crypto_tfm that is used in the context.
  * @in_key:	The input key.
  * @key_len:	The size of the key.
  *
- * This function uses crypto_sm4_expand_key() to expand the key.
+ * This function uses sm4_expandkey() to expand the key.
  * &crypto_sm4_ctx _must_ be the private data embedded in @tfm which is
  * retrieved with crypto_tfm_ctx().
  *
@@ -159,36 +33,17 @@ int crypto_sm4_set_key(struct crypto_tfm *tfm, const u8 *in_key,
 {
 	struct crypto_sm4_ctx *ctx = crypto_tfm_ctx(tfm);
 
-	return crypto_sm4_expand_key(ctx, in_key, key_len);
+	return sm4_expandkey(ctx, in_key, key_len);
 }
 EXPORT_SYMBOL_GPL(crypto_sm4_set_key);
 
-static void sm4_do_crypt(const u32 *rk, u32 *out, const u32 *in)
-{
-	u32 x[4], i, t;
-
-	for (i = 0; i < 4; ++i)
-		x[i] = get_unaligned_be32(&in[i]);
-
-	for (i = 0; i < 32; ++i) {
-		t = sm4_round(x, rk[i]);
-		x[0] = x[1];
-		x[1] = x[2];
-		x[2] = x[3];
-		x[3] = t;
-	}
-
-	for (i = 0; i < 4; ++i)
-		put_unaligned_be32(x[3 - i], &out[i]);
-}
-
 /* encrypt a block of text */
 
 void crypto_sm4_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
 {
 	const struct crypto_sm4_ctx *ctx = crypto_tfm_ctx(tfm);
 
-	sm4_do_crypt(ctx->rkey_enc, (u32 *)out, (u32 *)in);
+	sm4_crypt_block(ctx->rkey_enc, out, in);
 }
 EXPORT_SYMBOL_GPL(crypto_sm4_encrypt);
 
@@ -198,7 +53,7 @@ void crypto_sm4_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
 {
 	const struct crypto_sm4_ctx *ctx = crypto_tfm_ctx(tfm);
 
-	sm4_do_crypt(ctx->rkey_dec, (u32 *)out, (u32 *)in);
+	sm4_crypt_block(ctx->rkey_dec, out, in);
 }
 EXPORT_SYMBOL_GPL(crypto_sm4_decrypt);
 
diff --git a/include/crypto/sm4.h b/include/crypto/sm4.h
index 7afd730d16ff..bef92bcb286c 100644
--- a/include/crypto/sm4.h
+++ b/include/crypto/sm4.h
@@ -3,6 +3,7 @@
 /*
  * Common values for the SM4 algorithm
  * Copyright (C) 2018 ARM Limited or its affiliates.
+ * Copyright (c) 2021 Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
  */
 
 #ifndef _CRYPTO_SM4_H
@@ -20,11 +21,32 @@ struct crypto_sm4_ctx {
 	u32 rkey_dec[SM4_RKEY_WORDS];
 };
 
-int crypto_sm4_set_key(struct crypto_tfm *tfm, const u8 *in_key,
-		       unsigned int key_len);
-int crypto_sm4_expand_key(struct crypto_sm4_ctx *ctx, const u8 *in_key,
+extern const u32 sm4_fk[];
+extern const u32 sm4_ck[];
+extern const u8 sm4_sbox[];
+
+/**
+ * sm4_expandkey - Expands the SM4 key as described in GB/T 32907-2016
+ * @ctx:	The location where the computed key will be stored.
+ * @in_key:	The supplied key.
+ * @key_len:	The length of the supplied key.
+ *
+ * Returns 0 on success. The function fails only if an invalid key size (or
+ * pointer) is supplied.
+ */
+int sm4_expandkey(struct crypto_sm4_ctx *ctx, const u8 *in_key,
 			  unsigned int key_len);
 
+/**
+ * sm4_crypt_block - Encrypt or decrypt a single SM4 block
+ * @rk:		The rkey_enc for encrypt or rkey_dec for decrypt
+ * @out:	Buffer to store output data
+ * @in: 	Buffer containing the input data
+ */
+void sm4_crypt_block(const u32 *rk, u8 *out, const u8 *in);
+
+int crypto_sm4_set_key(struct crypto_tfm *tfm, const u8 *in_key,
+		       unsigned int key_len);
 void crypto_sm4_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in);
 void crypto_sm4_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in);
 
diff --git a/lib/crypto/Kconfig b/lib/crypto/Kconfig
index 14c032de276e..545ccbddf6a1 100644
--- a/lib/crypto/Kconfig
+++ b/lib/crypto/Kconfig
@@ -128,3 +128,6 @@ config CRYPTO_LIB_CHACHA20POLY1305
 
 config CRYPTO_LIB_SHA256
 	tristate
+
+config CRYPTO_LIB_SM4
+	tristate
diff --git a/lib/crypto/Makefile b/lib/crypto/Makefile
index 3a435629d9ce..73205ed269ba 100644
--- a/lib/crypto/Makefile
+++ b/lib/crypto/Makefile
@@ -38,6 +38,9 @@ libpoly1305-y					+= poly1305.o
 obj-$(CONFIG_CRYPTO_LIB_SHA256)			+= libsha256.o
 libsha256-y					:= sha256.o
 
+obj-$(CONFIG_CRYPTO_LIB_SM4)			+= libsm4.o
+libsm4-y					:= sm4.o
+
 ifneq ($(CONFIG_CRYPTO_MANAGER_DISABLE_TESTS),y)
 libblake2s-y					+= blake2s-selftest.o
 libchacha20poly1305-y				+= chacha20poly1305-selftest.o
diff --git a/lib/crypto/sm4.c b/lib/crypto/sm4.c
new file mode 100644
index 000000000000..b2ade92bc4db
--- /dev/null
+++ b/lib/crypto/sm4.c
@@ -0,0 +1,184 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * SM4, as specified in
+ * https://tools.ietf.org/id/draft-ribose-cfrg-sm4-10.html
+ *
+ * Copyright (C) 2018 ARM Limited or its affiliates.
+ * Copyright (c) 2021 Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
+ */
+
+#include <linux/module.h>
+#include <asm/unaligned.h>
+#include <crypto/sm4.h>
+
+static const u32 fk[4] = {
+	0xa3b1bac6, 0x56aa3350, 0x677d9197, 0xb27022dc
+};
+
+static const u32 __cacheline_aligned ck[32] = {
+	0x00070e15, 0x1c232a31, 0x383f464d, 0x545b6269,
+	0x70777e85, 0x8c939aa1, 0xa8afb6bd, 0xc4cbd2d9,
+	0xe0e7eef5, 0xfc030a11, 0x181f262d, 0x343b4249,
+	0x50575e65, 0x6c737a81, 0x888f969d, 0xa4abb2b9,
+	0xc0c7ced5, 0xdce3eaf1, 0xf8ff060d, 0x141b2229,
+	0x30373e45, 0x4c535a61, 0x686f767d, 0x848b9299,
+	0xa0a7aeb5, 0xbcc3cad1, 0xd8dfe6ed, 0xf4fb0209,
+	0x10171e25, 0x2c333a41, 0x484f565d, 0x646b7279
+};
+
+static const u8 __cacheline_aligned sbox[256] = {
+	0xd6, 0x90, 0xe9, 0xfe, 0xcc, 0xe1, 0x3d, 0xb7,
+	0x16, 0xb6, 0x14, 0xc2, 0x28, 0xfb, 0x2c, 0x05,
+	0x2b, 0x67, 0x9a, 0x76, 0x2a, 0xbe, 0x04, 0xc3,
+	0xaa, 0x44, 0x13, 0x26, 0x49, 0x86, 0x06, 0x99,
+	0x9c, 0x42, 0x50, 0xf4, 0x91, 0xef, 0x98, 0x7a,
+	0x33, 0x54, 0x0b, 0x43, 0xed, 0xcf, 0xac, 0x62,
+	0xe4, 0xb3, 0x1c, 0xa9, 0xc9, 0x08, 0xe8, 0x95,
+	0x80, 0xdf, 0x94, 0xfa, 0x75, 0x8f, 0x3f, 0xa6,
+	0x47, 0x07, 0xa7, 0xfc, 0xf3, 0x73, 0x17, 0xba,
+	0x83, 0x59, 0x3c, 0x19, 0xe6, 0x85, 0x4f, 0xa8,
+	0x68, 0x6b, 0x81, 0xb2, 0x71, 0x64, 0xda, 0x8b,
+	0xf8, 0xeb, 0x0f, 0x4b, 0x70, 0x56, 0x9d, 0x35,
+	0x1e, 0x24, 0x0e, 0x5e, 0x63, 0x58, 0xd1, 0xa2,
+	0x25, 0x22, 0x7c, 0x3b, 0x01, 0x21, 0x78, 0x87,
+	0xd4, 0x00, 0x46, 0x57, 0x9f, 0xd3, 0x27, 0x52,
+	0x4c, 0x36, 0x02, 0xe7, 0xa0, 0xc4, 0xc8, 0x9e,
+	0xea, 0xbf, 0x8a, 0xd2, 0x40, 0xc7, 0x38, 0xb5,
+	0xa3, 0xf7, 0xf2, 0xce, 0xf9, 0x61, 0x15, 0xa1,
+	0xe0, 0xae, 0x5d, 0xa4, 0x9b, 0x34, 0x1a, 0x55,
+	0xad, 0x93, 0x32, 0x30, 0xf5, 0x8c, 0xb1, 0xe3,
+	0x1d, 0xf6, 0xe2, 0x2e, 0x82, 0x66, 0xca, 0x60,
+	0xc0, 0x29, 0x23, 0xab, 0x0d, 0x53, 0x4e, 0x6f,
+	0xd5, 0xdb, 0x37, 0x45, 0xde, 0xfd, 0x8e, 0x2f,
+	0x03, 0xff, 0x6a, 0x72, 0x6d, 0x6c, 0x5b, 0x51,
+	0x8d, 0x1b, 0xaf, 0x92, 0xbb, 0xdd, 0xbc, 0x7f,
+	0x11, 0xd9, 0x5c, 0x41, 0x1f, 0x10, 0x5a, 0xd8,
+	0x0a, 0xc1, 0x31, 0x88, 0xa5, 0xcd, 0x7b, 0xbd,
+	0x2d, 0x74, 0xd0, 0x12, 0xb8, 0xe5, 0xb4, 0xb0,
+	0x89, 0x69, 0x97, 0x4a, 0x0c, 0x96, 0x77, 0x7e,
+	0x65, 0xb9, 0xf1, 0x09, 0xc5, 0x6e, 0xc6, 0x84,
+	0x18, 0xf0, 0x7d, 0xec, 0x3a, 0xdc, 0x4d, 0x20,
+	0x79, 0xee, 0x5f, 0x3e, 0xd7, 0xcb, 0x39, 0x48
+};
+
+extern const u32 sm4_fk[4] __alias(fk);
+extern const u32 sm4_ck[32] __alias(ck);
+extern const u8 sm4_sbox[256] __alias(sbox);
+
+EXPORT_SYMBOL(sm4_fk);
+EXPORT_SYMBOL(sm4_ck);
+EXPORT_SYMBOL(sm4_sbox);
+
+static inline u32 sm4_t_non_lin_sub(u32 x)
+{
+	u32 out;
+
+	out  = (u32)sbox[x & 0xff];
+	out |= (u32)sbox[(x >> 8) & 0xff] << 8;
+	out |= (u32)sbox[(x >> 16) & 0xff] << 16;
+	out |= (u32)sbox[(x >> 24) & 0xff] << 24;
+
+	return out;
+}
+
+static inline u32 sm4_key_lin_sub(u32 x)
+{
+	return x ^ rol32(x, 13) ^ rol32(x, 23);
+}
+
+static inline u32 sm4_enc_lin_sub(u32 x)
+{
+	return x ^ rol32(x, 2) ^ rol32(x, 10) ^ rol32(x, 18) ^ rol32(x, 24);
+}
+
+static inline u32 sm4_key_sub(u32 x)
+{
+	return sm4_key_lin_sub(sm4_t_non_lin_sub(x));
+}
+
+static inline u32 sm4_enc_sub(u32 x)
+{
+	return sm4_enc_lin_sub(sm4_t_non_lin_sub(x));
+}
+
+static inline u32 sm4_round(u32 x0, u32 x1, u32 x2, u32 x3, u32 rk)
+{
+	return x0 ^ sm4_enc_sub(x1 ^ x2 ^ x3 ^ rk);
+}
+
+
+/**
+ * sm4_expandkey - Expands the SM4 key as described in GB/T 32907-2016
+ * @ctx:	The location where the computed key will be stored.
+ * @in_key:	The supplied key.
+ * @key_len:	The length of the supplied key.
+ *
+ * Returns 0 on success. The function fails only if an invalid key size (or
+ * pointer) is supplied.
+ */
+int sm4_expandkey(struct crypto_sm4_ctx *ctx, const u8 *in_key,
+			  unsigned int key_len)
+{
+	u32 rk[4];
+	const u32 *key = (u32 *)in_key;
+	int i;
+
+	if (key_len != SM4_KEY_SIZE)
+		return -EINVAL;
+
+	rk[0] = get_unaligned_be32(&key[0]) ^ fk[0];
+	rk[1] = get_unaligned_be32(&key[1]) ^ fk[1];
+	rk[2] = get_unaligned_be32(&key[2]) ^ fk[2];
+	rk[3] = get_unaligned_be32(&key[3]) ^ fk[3];
+
+	for (i = 0; i < 32; i += 4) {
+		rk[0] ^= sm4_key_sub(rk[1] ^ rk[2] ^ rk[3] ^ ck[i + 0]);
+		rk[1] ^= sm4_key_sub(rk[2] ^ rk[3] ^ rk[0] ^ ck[i + 1]);
+		rk[2] ^= sm4_key_sub(rk[3] ^ rk[0] ^ rk[1] ^ ck[i + 2]);
+		rk[3] ^= sm4_key_sub(rk[0] ^ rk[1] ^ rk[2] ^ ck[i + 3]);
+
+		ctx->rkey_enc[i + 0] = rk[0];
+		ctx->rkey_enc[i + 1] = rk[1];
+		ctx->rkey_enc[i + 2] = rk[2];
+		ctx->rkey_enc[i + 3] = rk[3];
+		ctx->rkey_dec[31 - 0 - i] = rk[0];
+		ctx->rkey_dec[31 - 1 - i] = rk[1];
+		ctx->rkey_dec[31 - 2 - i] = rk[2];
+		ctx->rkey_dec[31 - 3 - i] = rk[3];
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(sm4_expandkey);
+
+/**
+ * sm4_crypt_block - Encrypt or decrypt a single SM4 block
+ * @rk:		The rkey_enc for encrypt or rkey_dec for decrypt
+ * @out:	Buffer to store output data
+ * @in: 	Buffer containing the input data
+ */
+void sm4_crypt_block(const u32 *rk, u8 *out, const u8 *in)
+{
+	u32 x[4], i;
+
+	x[0] = get_unaligned_be32(in + 0 * 4);
+	x[1] = get_unaligned_be32(in + 1 * 4);
+	x[2] = get_unaligned_be32(in + 2 * 4);
+	x[3] = get_unaligned_be32(in + 3 * 4);
+
+	for (i = 0; i < 32; i += 4) {
+		x[0] = sm4_round(x[0], x[1], x[2], x[3], rk[i + 0]);
+		x[1] = sm4_round(x[1], x[2], x[3], x[0], rk[i + 1]);
+		x[2] = sm4_round(x[2], x[3], x[0], x[1], rk[i + 2]);
+		x[3] = sm4_round(x[3], x[0], x[1], x[2], rk[i + 3]);
+	}
+
+	put_unaligned_be32(x[3 - 0], out + 0 * 4);
+	put_unaligned_be32(x[3 - 1], out + 1 * 4);
+	put_unaligned_be32(x[3 - 2], out + 2 * 4);
+	put_unaligned_be32(x[3 - 3], out + 3 * 4);
+}
+EXPORT_SYMBOL_GPL(sm4_crypt_block);
+
+MODULE_DESCRIPTION("Generic SM4 library");
+MODULE_LICENSE("GPL v2");
