diff --git a/lib/librte_eal/common/include/arch/x86/rte_memcpy.h b/lib/librte_eal/common/include/arch/x86/rte_memcpy.h
index 74c280c..ed6c412 100644
--- a/lib/librte_eal/common/include/arch/x86/rte_memcpy.h
+++ b/lib/librte_eal/common/include/arch/x86/rte_memcpy.h
@@ -45,6 +45,8 @@
 #include <string.h>
 #include <rte_vect.h>
 #include <rte_common.h>
+#include <rte_cpuflags.h>
+#include <rte_log.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -68,6 +70,100 @@ extern "C" {
 static __rte_always_inline void *
 rte_memcpy(void *dst, const void *src, size_t n);
 
+/**
+ * Macro for copying unaligned block from one location to another with constant load offset,
+ * 47 bytes leftover maximum,
+ * locations should not overlap.
+ * Requirements:
+ * - Store is aligned
+ * - Load offset is <offset>, which must be immediate value within [1, 15]
+ * - For <src>, make sure <offset> bit backwards & <16 - offset> bit forwards are available for loading
+ * - <dst>, <src>, <len> must be variables
+ * - __m128i <xmm0> ~ <xmm8> must be pre-defined
+ */
+#define MOVEUNALIGNED_LEFT47_IMM(dst, src, len, offset)                                                     \
+__extension__ ({                                                                                            \
+    int tmp;                                                                                                \
+    while (len >= 128 + 16 - offset) {                                                                      \
+        xmm0 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 0 * 16));                  \
+        len -= 128;                                                                                         \
+        xmm1 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 1 * 16));                  \
+        xmm2 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 2 * 16));                  \
+        xmm3 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 3 * 16));                  \
+        xmm4 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 4 * 16));                  \
+        xmm5 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 5 * 16));                  \
+        xmm6 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 6 * 16));                  \
+        xmm7 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 7 * 16));                  \
+        xmm8 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 8 * 16));                  \
+        src = (const uint8_t *)src + 128;                                                                   \
+        _mm_storeu_si128((__m128i *)((uint8_t *)dst + 0 * 16), _mm_alignr_epi8(xmm1, xmm0, offset));        \
+        _mm_storeu_si128((__m128i *)((uint8_t *)dst + 1 * 16), _mm_alignr_epi8(xmm2, xmm1, offset));        \
+        _mm_storeu_si128((__m128i *)((uint8_t *)dst + 2 * 16), _mm_alignr_epi8(xmm3, xmm2, offset));        \
+        _mm_storeu_si128((__m128i *)((uint8_t *)dst + 3 * 16), _mm_alignr_epi8(xmm4, xmm3, offset));        \
+        _mm_storeu_si128((__m128i *)((uint8_t *)dst + 4 * 16), _mm_alignr_epi8(xmm5, xmm4, offset));        \
+        _mm_storeu_si128((__m128i *)((uint8_t *)dst + 5 * 16), _mm_alignr_epi8(xmm6, xmm5, offset));        \
+        _mm_storeu_si128((__m128i *)((uint8_t *)dst + 6 * 16), _mm_alignr_epi8(xmm7, xmm6, offset));        \
+        _mm_storeu_si128((__m128i *)((uint8_t *)dst + 7 * 16), _mm_alignr_epi8(xmm8, xmm7, offset));        \
+        dst = (uint8_t *)dst + 128;                                                                         \
+    }                                                                                                       \
+    tmp = len;                                                                                              \
+    len = ((len - 16 + offset) & 127) + 16 - offset;                                                        \
+    tmp -= len;                                                                                             \
+    src = (const uint8_t *)src + tmp;                                                                       \
+    dst = (uint8_t *)dst + tmp;                                                                             \
+    if (len >= 32 + 16 - offset) {                                                                          \
+        while (len >= 32 + 16 - offset) {                                                                   \
+            xmm0 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 0 * 16));              \
+            len -= 32;                                                                                      \
+            xmm1 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 1 * 16));              \
+            xmm2 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 2 * 16));              \
+            src = (const uint8_t *)src + 32;                                                                \
+            _mm_storeu_si128((__m128i *)((uint8_t *)dst + 0 * 16), _mm_alignr_epi8(xmm1, xmm0, offset));    \
+            _mm_storeu_si128((__m128i *)((uint8_t *)dst + 1 * 16), _mm_alignr_epi8(xmm2, xmm1, offset));    \
+            dst = (uint8_t *)dst + 32;                                                                      \
+        }                                                                                                   \
+        tmp = len;                                                                                          \
+        len = ((len - 16 + offset) & 31) + 16 - offset;                                                     \
+        tmp -= len;                                                                                         \
+        src = (const uint8_t *)src + tmp;                                                                   \
+        dst = (uint8_t *)dst + tmp;                                                                         \
+    }                                                                                                       \
+})
+
+/**
+ * Macro for copying unaligned block from one location to another,
+ * 47 bytes leftover maximum,
+ * locations should not overlap.
+ * Use switch here because the aligning instruction requires immediate value for shift count.
+ * Requirements:
+ * - Store is aligned
+ * - Load offset is <offset>, which must be within [1, 15]
+ * - For <src>, make sure <offset> bit backwards & <16 - offset> bit forwards are available for loading
+ * - <dst>, <src>, <len> must be variables
+ * - __m128i <xmm0> ~ <xmm8> used in MOVEUNALIGNED_LEFT47_IMM must be pre-defined
+ */
+#define MOVEUNALIGNED_LEFT47(dst, src, len, offset)                   \
+__extension__ ({                                                      \
+    switch (offset) {                                                 \
+    case 0x01: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x01); break;    \
+    case 0x02: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x02); break;    \
+    case 0x03: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x03); break;    \
+    case 0x04: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x04); break;    \
+    case 0x05: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x05); break;    \
+    case 0x06: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x06); break;    \
+    case 0x07: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x07); break;    \
+    case 0x08: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x08); break;    \
+    case 0x09: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x09); break;    \
+    case 0x0A: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0A); break;    \
+    case 0x0B: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0B); break;    \
+    case 0x0C: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0C); break;    \
+    case 0x0D: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0D); break;    \
+    case 0x0E: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0E); break;    \
+    case 0x0F: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0F); break;    \
+    default:;                                                         \
+    }                                                                 \
+})
+
 #ifdef RTE_MACHINE_CPUFLAG_AVX512F
 
 #define ALIGNMENT_MASK 0x3F
@@ -589,100 +685,6 @@ rte_mov256(uint8_t *dst, const uint8_t *src)
 	rte_mov16((uint8_t *)dst + 15 * 16, (const uint8_t *)src + 15 * 16);
 }
 
-/**
- * Macro for copying unaligned block from one location to another with constant load offset,
- * 47 bytes leftover maximum,
- * locations should not overlap.
- * Requirements:
- * - Store is aligned
- * - Load offset is <offset>, which must be immediate value within [1, 15]
- * - For <src>, make sure <offset> bit backwards & <16 - offset> bit forwards are available for loading
- * - <dst>, <src>, <len> must be variables
- * - __m128i <xmm0> ~ <xmm8> must be pre-defined
- */
-#define MOVEUNALIGNED_LEFT47_IMM(dst, src, len, offset)                                                     \
-__extension__ ({                                                                                            \
-    int tmp;                                                                                                \
-    while (len >= 128 + 16 - offset) {                                                                      \
-        xmm0 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 0 * 16));                  \
-        len -= 128;                                                                                         \
-        xmm1 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 1 * 16));                  \
-        xmm2 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 2 * 16));                  \
-        xmm3 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 3 * 16));                  \
-        xmm4 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 4 * 16));                  \
-        xmm5 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 5 * 16));                  \
-        xmm6 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 6 * 16));                  \
-        xmm7 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 7 * 16));                  \
-        xmm8 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 8 * 16));                  \
-        src = (const uint8_t *)src + 128;                                                                   \
-        _mm_storeu_si128((__m128i *)((uint8_t *)dst + 0 * 16), _mm_alignr_epi8(xmm1, xmm0, offset));        \
-        _mm_storeu_si128((__m128i *)((uint8_t *)dst + 1 * 16), _mm_alignr_epi8(xmm2, xmm1, offset));        \
-        _mm_storeu_si128((__m128i *)((uint8_t *)dst + 2 * 16), _mm_alignr_epi8(xmm3, xmm2, offset));        \
-        _mm_storeu_si128((__m128i *)((uint8_t *)dst + 3 * 16), _mm_alignr_epi8(xmm4, xmm3, offset));        \
-        _mm_storeu_si128((__m128i *)((uint8_t *)dst + 4 * 16), _mm_alignr_epi8(xmm5, xmm4, offset));        \
-        _mm_storeu_si128((__m128i *)((uint8_t *)dst + 5 * 16), _mm_alignr_epi8(xmm6, xmm5, offset));        \
-        _mm_storeu_si128((__m128i *)((uint8_t *)dst + 6 * 16), _mm_alignr_epi8(xmm7, xmm6, offset));        \
-        _mm_storeu_si128((__m128i *)((uint8_t *)dst + 7 * 16), _mm_alignr_epi8(xmm8, xmm7, offset));        \
-        dst = (uint8_t *)dst + 128;                                                                         \
-    }                                                                                                       \
-    tmp = len;                                                                                              \
-    len = ((len - 16 + offset) & 127) + 16 - offset;                                                        \
-    tmp -= len;                                                                                             \
-    src = (const uint8_t *)src + tmp;                                                                       \
-    dst = (uint8_t *)dst + tmp;                                                                             \
-    if (len >= 32 + 16 - offset) {                                                                          \
-        while (len >= 32 + 16 - offset) {                                                                   \
-            xmm0 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 0 * 16));              \
-            len -= 32;                                                                                      \
-            xmm1 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 1 * 16));              \
-            xmm2 = _mm_loadu_si128((const __m128i *)((const uint8_t *)src - offset + 2 * 16));              \
-            src = (const uint8_t *)src + 32;                                                                \
-            _mm_storeu_si128((__m128i *)((uint8_t *)dst + 0 * 16), _mm_alignr_epi8(xmm1, xmm0, offset));    \
-            _mm_storeu_si128((__m128i *)((uint8_t *)dst + 1 * 16), _mm_alignr_epi8(xmm2, xmm1, offset));    \
-            dst = (uint8_t *)dst + 32;                                                                      \
-        }                                                                                                   \
-        tmp = len;                                                                                          \
-        len = ((len - 16 + offset) & 31) + 16 - offset;                                                     \
-        tmp -= len;                                                                                         \
-        src = (const uint8_t *)src + tmp;                                                                   \
-        dst = (uint8_t *)dst + tmp;                                                                         \
-    }                                                                                                       \
-})
-
-/**
- * Macro for copying unaligned block from one location to another,
- * 47 bytes leftover maximum,
- * locations should not overlap.
- * Use switch here because the aligning instruction requires immediate value for shift count.
- * Requirements:
- * - Store is aligned
- * - Load offset is <offset>, which must be within [1, 15]
- * - For <src>, make sure <offset> bit backwards & <16 - offset> bit forwards are available for loading
- * - <dst>, <src>, <len> must be variables
- * - __m128i <xmm0> ~ <xmm8> used in MOVEUNALIGNED_LEFT47_IMM must be pre-defined
- */
-#define MOVEUNALIGNED_LEFT47(dst, src, len, offset)                   \
-__extension__ ({                                                      \
-    switch (offset) {                                                 \
-    case 0x01: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x01); break;    \
-    case 0x02: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x02); break;    \
-    case 0x03: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x03); break;    \
-    case 0x04: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x04); break;    \
-    case 0x05: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x05); break;    \
-    case 0x06: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x06); break;    \
-    case 0x07: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x07); break;    \
-    case 0x08: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x08); break;    \
-    case 0x09: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x09); break;    \
-    case 0x0A: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0A); break;    \
-    case 0x0B: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0B); break;    \
-    case 0x0C: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0C); break;    \
-    case 0x0D: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0D); break;    \
-    case 0x0E: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0E); break;    \
-    case 0x0F: MOVEUNALIGNED_LEFT47_IMM(dst, src, n, 0x0F); break;    \
-    default:;                                                         \
-    }                                                                 \
-})
-
 static inline void *
 rte_memcpy_generic(void *dst, const void *src, size_t n)
 {
@@ -888,13 +890,1049 @@ rte_memcpy_aligned(void *dst, const void *src, size_t n)
 	return ret;
 }
 
+/*
+ * Run-time dispatch impementation of memcpy.
+ */
+
+typedef void * (*rte_memcpy_t)(void *dst, const void *src, size_t n);
+static rte_memcpy_t rte_memcpy_ptr;
+
+/**
+ * AVX512 implementation below
+ */
+#ifdef CC_SUPPORT_AVX512
+__attribute__((target("avx512f")))
+static inline void *
+rte_memcpy_AVX512F(void *dst, const void *src, size_t n)
+{
+	if (!(((uintptr_t)dst | (uintptr_t)src) & 0x3F)) {
+		void *ret = dst;
+
+		/* Copy size <= 16 bytes */
+		if (n < 16) {
+			if (n & 0x01) {
+				*(uint8_t *)dst = *(const uint8_t *)src;
+				src = (const uint8_t *)src + 1;
+				dst = (uint8_t *)dst + 1;
+			}
+			if (n & 0x02) {
+				*(uint16_t *)dst = *(const uint16_t *)src;
+				src = (const uint16_t *)src + 1;
+				dst = (uint16_t *)dst + 1;
+			}
+			if (n & 0x04) {
+				*(uint32_t *)dst = *(const uint32_t *)src;
+				src = (const uint32_t *)src + 1;
+				dst = (uint32_t *)dst + 1;
+			}
+			if (n & 0x08)
+				*(uint64_t *)dst = *(const uint64_t *)src;
+
+			return ret;
+		}
+
+		/* Copy 16 <= size <= 32 bytes */
+		if (n <= 32) {
+			__m128i xmm0, xmm1;
+			xmm0 = _mm_loadu_si128((const __m128i *)src);
+			xmm1 = _mm_loadu_si128((const __m128i *)
+				((const uint8_t *)src - 16 + n));
+			_mm_storeu_si128((__m128i *)dst, xmm0);
+			_mm_storeu_si128((__m128i *)
+				((uint8_t *)dst - 16 + n), xmm1);
+
+			return ret;
+		}
+
+		/* Copy 32 < size <= 64 bytes */
+		if (n <= 64) {
+			__m256i ymm0, ymm1;
+			ymm0 = _mm256_loadu_si256((const __m256i *)src);
+			ymm1 = _mm256_loadu_si256((const __m256i *)
+				((const uint8_t *)src - 32 + n));
+			_mm256_storeu_si256((__m256i *)dst, ymm0);
+			_mm256_storeu_si256((__m256i *)
+				((uint8_t *)dst - 32 + n), ymm1);
+
+			return ret;
+		}
+
+		/* Copy 64 bytes blocks */
+		for (; n >= 64; n -= 64) {
+			__m512i zmm0;
+			zmm0 = _mm512_loadu_si512((const void *)src);
+			_mm512_storeu_si512((void *)dst, zmm0);
+			dst = (uint8_t *)dst + 64;
+			src = (const uint8_t *)src + 64;
+		}
+
+		/* Copy whatever left */
+		__m512i zmm0;
+		zmm0 = _mm512_loadu_si512((const void *)
+			((const uint8_t *)src - 64 + n));
+		_mm512_storeu_si512((void *)((uint8_t *)dst - 64 + n), zmm0);
+
+		return ret;
+	} else {
+		uintptr_t dstu = (uintptr_t)dst;
+		uintptr_t srcu = (uintptr_t)src;
+		void *ret = dst;
+		size_t dstofss;
+		size_t bits;
+
+		/**
+		 * Copy less than 16 bytes
+		 */
+		if (n < 16) {
+			if (n & 0x01) {
+				*(uint8_t *)dstu = *(const uint8_t *)srcu;
+				srcu = (uintptr_t)((const uint8_t *)srcu + 1);
+				dstu = (uintptr_t)((uint8_t *)dstu + 1);
+			}
+			if (n & 0x02) {
+				*(uint16_t *)dstu = *(const uint16_t *)srcu;
+				srcu = (uintptr_t)((const uint16_t *)srcu + 1);
+				dstu = (uintptr_t)((uint16_t *)dstu + 1);
+			}
+			if (n & 0x04) {
+				*(uint32_t *)dstu = *(const uint32_t *)srcu;
+				srcu = (uintptr_t)((const uint32_t *)srcu + 1);
+				dstu = (uintptr_t)((uint32_t *)dstu + 1);
+			}
+			if (n & 0x08)
+				*(uint64_t *)dstu = *(const uint64_t *)srcu;
+			return ret;
+		}
+
+		/**
+		 * Fast way when copy size doesn't exceed 512 bytes
+		 */
+		if (n <= 32) {
+			__m128i xmm0, xmm1;
+			xmm0 = _mm_loadu_si128((const __m128i *)src);
+			xmm1 = _mm_loadu_si128((const __m128i *)
+				((const uint8_t *)src - 16 + n));
+			_mm_storeu_si128((__m128i *)dst, xmm0);
+			_mm_storeu_si128((__m128i *)
+				((uint8_t *)dst - 16 + n), xmm1);
+			return ret;
+		}
+		if (n <= 64) {
+			__m256i ymm0, ymm1;
+			ymm0 = _mm256_loadu_si256((const __m256i *)src);
+			ymm1 = _mm256_loadu_si256((const __m256i *)
+				((const uint8_t *)src - 32 + n));
+			_mm256_storeu_si256((__m256i *)dst, ymm0);
+			_mm256_storeu_si256((__m256i *)
+				((uint8_t *)dst - 32 + n), ymm1);
+			return ret;
+		}
+		if (n <= 512) {
+			if (n >= 256) {
+				n -= 256;
+				__m512i zmm0, zmm1, zmm2, zmm3;
+				zmm0 = _mm512_loadu_si512((const void *)src);
+				zmm1 = _mm512_loadu_si512((const void *)
+					((const uint8_t *)src + 64));
+				zmm2 = _mm512_loadu_si512((const void *)
+					((const uint8_t *)src + 2*64));
+				zmm3 = _mm512_loadu_si512((const void *)
+					((const uint8_t *)src + 3*64));
+				_mm512_storeu_si512((void *)dst, zmm0);
+				_mm512_storeu_si512((void *)
+					((uint8_t *)dst + 64), zmm1);
+				_mm512_storeu_si512((void *)
+					((uint8_t *)dst + 2*64), zmm2);
+				_mm512_storeu_si512((void *)
+					((uint8_t *)dst + 3*64), zmm3);
+				src = (const uint8_t *)src + 256;
+				dst = (uint8_t *)dst + 256;
+			}
+			if (n >= 128) {
+				n -= 128;
+				__m512i zmm0, zmm1;
+				zmm0 = _mm512_loadu_si512((const void *)src);
+				zmm1 = _mm512_loadu_si512((const void *)
+					((const uint8_t *)src + 64));
+				_mm512_storeu_si512((void *)dst, zmm0);
+				_mm512_storeu_si512((void *)
+					((uint8_t *)dst + 64), zmm1);
+				src = (const uint8_t *)src + 128;
+				dst = (uint8_t *)dst + 128;
+			}
+COPY_BLOCK_128_BACK63:
+			if (n > 64) {
+				__m512i zmm0, zmm1;
+				zmm0 = _mm512_loadu_si512((const void *)src);
+				zmm1 = _mm512_loadu_si512((const void *)
+					((const uint8_t *)src - 64 + n));
+				_mm512_storeu_si512((void *)dst, zmm0);
+				_mm512_storeu_si512((void *)
+					((uint8_t *)dst - 64 + n), zmm1);
+				return ret;
+			}
+			if (n > 0) {
+				__m512i zmm0;
+				zmm0 = _mm512_loadu_si512((const void *)
+					((const uint8_t *)src - 64 + n));
+				_mm512_storeu_si512((void *)
+					((uint8_t *)dst - 64 + n), zmm0);
+			}
+			return ret;
+		}
+
+		/**
+		 * Make store aligned when copy size exceeds 512 bytes
+		 */
+		dstofss = ((uintptr_t)dst & 0x3F);
+		if (dstofss > 0) {
+			dstofss = 64 - dstofss;
+			n -= dstofss;
+			__m512i zmm0;
+			zmm0 = _mm512_loadu_si512((const void *)src);
+			_mm512_storeu_si512((void *)dst, zmm0);
+			src = (const uint8_t *)src + dstofss;
+			dst = (uint8_t *)dst + dstofss;
+		}
+
+		/**
+		 * Copy 512-byte blocks.
+		 * Use copy block function for better instruction order control,
+		 * which is important when load is unaligned.
+		 */
+		__m512i zmm0, zmm1, zmm2, zmm3, zmm4, zmm5, zmm6, zmm7;
+
+		while (n >= 512) {
+			zmm0 = _mm512_loadu_si512((const void *)
+				((const uint8_t *)src + 0 * 64));
+			n -= 512;
+			zmm1 = _mm512_loadu_si512((const void *)
+				((const uint8_t *)src + 1 * 64));
+			zmm2 = _mm512_loadu_si512((const void *)
+				((const uint8_t *)src + 2 * 64));
+			zmm3 = _mm512_loadu_si512((const void *)
+				((const uint8_t *)src + 3 * 64));
+			zmm4 = _mm512_loadu_si512((const void *)
+				((const uint8_t *)src + 4 * 64));
+			zmm5 = _mm512_loadu_si512((const void *)
+				((const uint8_t *)src + 5 * 64));
+			zmm6 = _mm512_loadu_si512((const void *)
+				((const uint8_t *)src + 6 * 64));
+			zmm7 = _mm512_loadu_si512((const void *)
+				((const uint8_t *)src + 7 * 64));
+			src = (const uint8_t *)src + 512;
+			_mm512_storeu_si512((void *)
+				((uint8_t *)dst + 0 * 64), zmm0);
+			_mm512_storeu_si512((void *)
+				((uint8_t *)dst + 1 * 64), zmm1);
+			_mm512_storeu_si512((void *)
+				((uint8_t *)dst + 2 * 64), zmm2);
+			_mm512_storeu_si512((void *)
+				((uint8_t *)dst + 3 * 64), zmm3);
+			_mm512_storeu_si512((void *)
+				((uint8_t *)dst + 4 * 64), zmm4);
+			_mm512_storeu_si512((void *)
+				((uint8_t *)dst + 5 * 64), zmm5);
+			_mm512_storeu_si512((void *)
+				((uint8_t *)dst + 6 * 64), zmm6);
+			_mm512_storeu_si512((void *)
+				((uint8_t *)dst + 7 * 64), zmm7);
+			dst = (uint8_t *)dst + 512;
+		}
+		bits = n;
+		n = n & 511;
+		bits -= n;
+		src = (const uint8_t *)src + bits;
+		dst = (uint8_t *)dst + bits;
+
+		/**
+		 * Copy 128-byte blocks.
+		 * Use copy block function for better instruction order control,
+		 * which is important when load is unaligned.
+		 */
+		if (n >= 128) {
+			__m512i zmm0, zmm1;
+
+			while (n >= 128) {
+				zmm0 = _mm512_loadu_si512((const void *)
+					((const uint8_t *)src + 0 * 64));
+				n -= 128;
+				zmm1 = _mm512_loadu_si512((const void *)
+					((const uint8_t *)src + 1 * 64));
+				src = (const uint8_t *)src + 128;
+				_mm512_storeu_si512((void *)
+					((uint8_t *)dst + 0 * 64), zmm0);
+				_mm512_storeu_si512((void *)
+					((uint8_t *)dst + 1 * 64), zmm1);
+				dst = (uint8_t *)dst + 128;
+			}
+			bits = n;
+			n = n & 127;
+			bits -= n;
+			src = (const uint8_t *)src + bits;
+			dst = (uint8_t *)dst + bits;
+		}
+
+		/**
+		 * Copy whatever left
+		 */
+		goto COPY_BLOCK_128_BACK63;
+	}
+}
+#endif
+
+/**
+ * AVX2 implementation below
+ */
+#ifdef CC_SUPPORT_AVX2
+__attribute__((target("avx2")))
+static inline void *
+rte_memcpy_AVX2(void *dst, const void *src, size_t n)
+{
+	if (!(((uintptr_t)dst | (uintptr_t)src) & 0x1F)) {
+		void *ret = dst;
+
+		/* Copy size <= 16 bytes */
+		if (n < 16) {
+			if (n & 0x01) {
+				*(uint8_t *)dst = *(const uint8_t *)src;
+				src = (const uint8_t *)src + 1;
+				dst = (uint8_t *)dst + 1;
+			}
+			if (n & 0x02) {
+				*(uint16_t *)dst = *(const uint16_t *)src;
+				src = (const uint16_t *)src + 1;
+				dst = (uint16_t *)dst + 1;
+			}
+			if (n & 0x04) {
+				*(uint32_t *)dst = *(const uint32_t *)src;
+				src = (const uint32_t *)src + 1;
+				dst = (uint32_t *)dst + 1;
+			}
+			if (n & 0x08)
+				*(uint64_t *)dst = *(const uint64_t *)src;
+
+			return ret;
+		}
+
+		/* Copy 16 <= size <= 32 bytes */
+		if (n <= 32) {
+			__m128i xmm0, xmm1;
+			xmm0 = _mm_loadu_si128((const __m128i *)src);
+			xmm1 = _mm_loadu_si128((const __m128i *)
+				((const uint8_t *)src - 16 + n));
+			_mm_storeu_si128((__m128i *)dst, xmm0);
+			_mm_storeu_si128((__m128i *)
+				((uint8_t *)dst - 16 + n), xmm1);
+
+			return ret;
+		}
+
+		/* Copy 32 < size <= 64 bytes */
+		if (n <= 64) {
+			__m256i ymm0, ymm1;
+			ymm0 = _mm256_loadu_si256((const __m256i *)src);
+			ymm1 = _mm256_loadu_si256((const __m256i *)
+				((const uint8_t *)src - 32 + n));
+			_mm256_storeu_si256((__m256i *)dst, ymm0);
+			_mm256_storeu_si256((__m256i *)
+				((uint8_t *)dst - 32 + n), ymm1);
+
+			return ret;
+		}
+
+		/* Copy 64 bytes blocks */
+		for (; n >= 64; n -= 64) {
+			__m256i ymm0, ymm1;
+			ymm0 = _mm256_loadu_si256((const __m256i *)src);
+			ymm1 = _mm256_loadu_si256((const __m256i *)
+				((const uint8_t *)src + 32));
+			_mm256_storeu_si256((__m256i *)dst, ymm0);
+			_mm256_storeu_si256((__m256i *)
+				((uint8_t *)dst + 32), ymm1);
+			dst = (uint8_t *)dst + 64;
+			src = (const uint8_t *)src + 64;
+		}
+
+		/* Copy whatever left */
+		__m256i ymm0, ymm1;
+		ymm0 = _mm256_loadu_si256((const __m256i *)
+			((const uint8_t *)src - 64 + n));
+		ymm1 = _mm256_loadu_si256((const __m256i *)
+			((const uint8_t *)src - 32 + n));
+		_mm256_storeu_si256((__m256i *)((uint8_t *)dst - 64 + n), ymm0);
+		_mm256_storeu_si256((__m256i *)((uint8_t *)dst - 32 + n), ymm1);
+
+		return ret;
+	} else {
+		uintptr_t dstu = (uintptr_t)dst;
+		uintptr_t srcu = (uintptr_t)src;
+		void *ret = dst;
+		size_t dstofss;
+		size_t bits;
+
+		/**
+		 * Copy less than 16 bytes
+		 */
+		if (n < 16) {
+			if (n & 0x01) {
+				*(uint8_t *)dstu = *(const uint8_t *)srcu;
+				srcu = (uintptr_t)((const uint8_t *)srcu + 1);
+				dstu = (uintptr_t)((uint8_t *)dstu + 1);
+			}
+			if (n & 0x02) {
+				*(uint16_t *)dstu = *(const uint16_t *)srcu;
+				srcu = (uintptr_t)((const uint16_t *)srcu + 1);
+				dstu = (uintptr_t)((uint16_t *)dstu + 1);
+			}
+			if (n & 0x04) {
+				*(uint32_t *)dstu = *(const uint32_t *)srcu;
+				srcu = (uintptr_t)((const uint32_t *)srcu + 1);
+				dstu = (uintptr_t)((uint32_t *)dstu + 1);
+			}
+			if (n & 0x08)
+				*(uint64_t *)dstu = *(const uint64_t *)srcu;
+			return ret;
+		}
+
+		/**
+		 * Fast way when copy size doesn't exceed 256 bytes
+		 */
+		if (n <= 32) {
+			__m128i xmm0, xmm1;
+			xmm0 = _mm_loadu_si128((const __m128i *)src);
+			xmm1 = _mm_loadu_si128((const __m128i *)
+				((const uint8_t *)src - 16 + n));
+			_mm_storeu_si128((__m128i *)dst, xmm0);
+			_mm_storeu_si128((__m128i *)
+				((uint8_t *)dst - 16 + n), xmm1);
+			return ret;
+		}
+		if (n <= 48) {
+			__m128i xmm0, xmm1, xmm2;
+			xmm0 = _mm_loadu_si128((const __m128i *)src);
+			xmm1 = _mm_loadu_si128((const __m128i *)
+				((const uint8_t *)src + 16));
+			xmm2 = _mm_loadu_si128((const __m128i *)
+				((const uint8_t *)src - 16 + n));
+			_mm_storeu_si128((__m128i *)dst, xmm0);
+			_mm_storeu_si128((__m128i *)
+				((uint8_t *)dst + 16), xmm1);
+			_mm_storeu_si128((__m128i *)
+				((uint8_t *)dst - 16 + n), xmm2);
+			return ret;
+		}
+		if (n <= 64) {
+			__m256i ymm0, ymm1;
+			ymm0 = _mm256_loadu_si256((const __m256i *)src);
+			ymm1 = _mm256_loadu_si256((const __m256i *)
+				((const uint8_t *)src - 32 + n));
+			_mm256_storeu_si256((__m256i *)dst, ymm0);
+			_mm256_storeu_si256((__m256i *)
+				((uint8_t *)dst - 32 + n), ymm1);
+			return ret;
+		}
+		if (n <= 256) {
+			if (n >= 128) {
+				n -= 128;
+				__m256i ymm0, ymm1, ymm2, ymm3;
+				ymm0 = _mm256_loadu_si256((const __m256i *)src);
+				ymm1 = _mm256_loadu_si256((const __m256i *)
+					((const uint8_t *)src + 32));
+				ymm2 = _mm256_loadu_si256((const __m256i *)
+					((const uint8_t *)src + 2*32));
+				ymm3 = _mm256_loadu_si256((const __m256i *)
+					((const uint8_t *)src + 3*32));
+				_mm256_storeu_si256((__m256i *)dst, ymm0);
+				_mm256_storeu_si256((__m256i *)
+					((uint8_t *)dst + 32), ymm1);
+				_mm256_storeu_si256((__m256i *)
+					((uint8_t *)dst + 2*32), ymm2);
+				_mm256_storeu_si256((__m256i *)
+					((uint8_t *)dst + 3*32), ymm3);
+				src = (const uint8_t *)src + 128;
+				dst = (uint8_t *)dst + 128;
+			}
+COPY_BLOCK_128_BACK31:
+			if (n >= 64) {
+				n -= 64;
+				__m256i ymm0, ymm1;
+				ymm0 = _mm256_loadu_si256((const __m256i *)src);
+				ymm1 = _mm256_loadu_si256((const __m256i *)
+					((const uint8_t *)src + 32));
+				_mm256_storeu_si256((__m256i *)dst, ymm0);
+				_mm256_storeu_si256((__m256i *)
+					((uint8_t *)dst + 32), ymm1);
+				src = (const uint8_t *)src + 64;
+				dst = (uint8_t *)dst + 64;
+			}
+			if (n > 32) {
+				__m256i ymm0, ymm1;
+				ymm0 = _mm256_loadu_si256((const __m256i *)src);
+				ymm1 = _mm256_loadu_si256((const __m256i *)
+					((const uint8_t *)src - 32 + n));
+				_mm256_storeu_si256((__m256i *)dst, ymm0);
+				_mm256_storeu_si256((__m256i *)
+					((uint8_t *)dst - 32 + n), ymm1);
+				return ret;
+			}
+			if (n > 0) {
+				__m256i ymm0;
+				ymm0 = _mm256_loadu_si256((const __m256i *)
+					((const uint8_t *)src - 32 + n));
+				_mm256_storeu_si256((__m256i *)
+					((uint8_t *)dst - 32 + n), ymm0);
+			}
+			return ret;
+		}
+
+		/**
+		 * Make store aligned when copy size exceeds 256 bytes
+		 */
+		dstofss = (uintptr_t)dst & 0x1F;
+		if (dstofss > 0) {
+			dstofss = 32 - dstofss;
+			n -= dstofss;
+			__m256i ymm0;
+			ymm0 = _mm256_loadu_si256((const __m256i *)src);
+			_mm256_storeu_si256((__m256i *)dst, ymm0);
+			src = (const uint8_t *)src + dstofss;
+			dst = (uint8_t *)dst + dstofss;
+		}
+
+		/**
+		 * Copy 128-byte blocks
+		 */
+		__m256i ymm0, ymm1, ymm2, ymm3;
+
+		while (n >= 128) {
+			ymm0 = _mm256_loadu_si256((const __m256i *)
+				((const uint8_t *)src + 0 * 32));
+			n -= 128;
+			ymm1 = _mm256_loadu_si256((const __m256i *)
+				((const uint8_t *)src + 1 * 32));
+			ymm2 = _mm256_loadu_si256((const __m256i *)
+				((const uint8_t *)src + 2 * 32));
+			ymm3 = _mm256_loadu_si256((const __m256i *)
+				((const uint8_t *)src + 3 * 32));
+			src = (const uint8_t *)src + 128;
+			_mm256_storeu_si256((__m256i *)
+				((uint8_t *)dst + 0 * 32), ymm0);
+			_mm256_storeu_si256((__m256i *)
+				((uint8_t *)dst + 1 * 32), ymm1);
+			_mm256_storeu_si256((__m256i *)
+				((uint8_t *)dst + 2 * 32), ymm2);
+			_mm256_storeu_si256((__m256i *)
+				((uint8_t *)dst + 3 * 32), ymm3);
+			dst = (uint8_t *)dst + 128;
+		}
+		bits = n;
+		n = n & 127;
+		bits -= n;
+		src = (const uint8_t *)src + bits;
+		dst = (uint8_t *)dst + bits;
+
+		/**
+		 * Copy whatever left
+		 */
+		goto COPY_BLOCK_128_BACK31;
+	}
+}
+#endif
+
+/**
+ * SSE & AVX implementation below
+ */
+static inline void *
+rte_memcpy_DEFAULT(void *dst, const void *src, size_t n)
+{
+	if (!(((uintptr_t)dst | (uintptr_t)src) & 0x0F)) {
+		void *ret = dst;
+
+		/* Copy size <= 16 bytes */
+		if (n < 16) {
+			if (n & 0x01) {
+				*(uint8_t *)dst = *(const uint8_t *)src;
+				src = (const uint8_t *)src + 1;
+				dst = (uint8_t *)dst + 1;
+			}
+			if (n & 0x02) {
+				*(uint16_t *)dst = *(const uint16_t *)src;
+				src = (const uint16_t *)src + 1;
+				dst = (uint16_t *)dst + 1;
+			}
+			if (n & 0x04) {
+				*(uint32_t *)dst = *(const uint32_t *)src;
+				src = (const uint32_t *)src + 1;
+				dst = (uint32_t *)dst + 1;
+			}
+			if (n & 0x08)
+				*(uint64_t *)dst = *(const uint64_t *)src;
+
+			return ret;
+		}
+
+		/* Copy 16 <= size <= 32 bytes */
+		if (n <= 32) {
+			__m128i xmm0, xmm1;
+			xmm0 = _mm_loadu_si128((const __m128i *)src);
+			xmm1 = _mm_loadu_si128((const __m128i *)
+				((const uint8_t *)src - 16 + n));
+			_mm_storeu_si128((__m128i *)dst, xmm0);
+			_mm_storeu_si128((__m128i *)
+				((uint8_t *)dst - 16 + n), xmm1);
+
+			return ret;
+		}
+
+		/* Copy 32 < size <= 64 bytes */
+		if (n <= 64) {
+			__m128i xmm0, xmm1, xmm2, xmm3;
+			xmm0 = _mm_loadu_si128((const __m128i *)src);
+			xmm1 = _mm_loadu_si128((const __m128i *)
+				((const uint8_t *)src + 16));
+			xmm2 = _mm_loadu_si128((const __m128i *)
+				((const uint8_t *)src - 32 + n));
+			xmm3 = _mm_loadu_si128((const __m128i *)
+				((const uint8_t *)src - 16 + n));
+			_mm_storeu_si128((__m128i *)dst, xmm0);
+			_mm_storeu_si128((__m128i *)
+				((uint8_t *)dst + 16), xmm1);
+			_mm_storeu_si128((__m128i *)
+				((uint8_t *)dst - 32 + n), xmm2);
+			_mm_storeu_si128((__m128i *)
+				((uint8_t *)dst - 16 + n), xmm3);
+
+			return ret;
+		}
+
+		/* Copy 64 bytes blocks */
+		for (; n >= 64; n -= 64) {
+			__m128i xmm0, xmm1, xmm2, xmm3;
+			xmm0 = _mm_loadu_si128((const __m128i *)src);
+			xmm1 = _mm_loadu_si128((const __m128i *)
+				((const uint8_t *)src + 16));
+			xmm2 = _mm_loadu_si128((const __m128i *)
+				((const uint8_t *)src + 2*16));
+			xmm3 = _mm_loadu_si128((const __m128i *)
+				((const uint8_t *)src + 3*16));
+			_mm_storeu_si128((__m128i *)dst, xmm0);
+			_mm_storeu_si128((__m128i *)
+				((uint8_t *)dst + 16), xmm1);
+			_mm_storeu_si128((__m128i *)
+				((uint8_t *)dst + 2*16), xmm2);
+			_mm_storeu_si128((__m128i *)
+				((uint8_t *)dst + 3*16), xmm3);
+			dst = (uint8_t *)dst + 64;
+			src = (const uint8_t *)src + 64;
+		}
+
+		/* Copy whatever left */
+		__m128i xmm0, xmm1, xmm2, xmm3;
+		xmm0 = _mm_loadu_si128((const __m128i *)
+			((const uint8_t *)src - 64 + n));
+		xmm1 = _mm_loadu_si128((const __m128i *)
+			((const uint8_t *)src - 48 + n));
+		xmm2 = _mm_loadu_si128((const __m128i *)
+			((const uint8_t *)src - 32 + n));
+		xmm3 = _mm_loadu_si128((const __m128i *)
+			((const uint8_t *)src - 16 + n));
+		_mm_storeu_si128((__m128i *)((uint8_t *)dst - 64 + n), xmm0);
+		_mm_storeu_si128((__m128i *)((uint8_t *)dst - 48 + n), xmm1);
+		_mm_storeu_si128((__m128i *)((uint8_t *)dst - 32 + n), xmm2);
+		_mm_storeu_si128((__m128i *)((uint8_t *)dst - 16 + n), xmm3);
+
+		return ret;
+	} else {
+		__m128i xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8;
+		uintptr_t dstu = (uintptr_t)dst;
+		uintptr_t srcu = (uintptr_t)src;
+		void *ret = dst;
+		size_t dstofss;
+		size_t srcofs;
+
+		/**
+		 * Copy less than 16 bytes
+		 */
+		if (n < 16) {
+			if (n & 0x01) {
+				*(uint8_t *)dstu = *(const uint8_t *)srcu;
+				srcu = (uintptr_t)((const uint8_t *)srcu + 1);
+				dstu = (uintptr_t)((uint8_t *)dstu + 1);
+			}
+			if (n & 0x02) {
+				*(uint16_t *)dstu = *(const uint16_t *)srcu;
+				srcu = (uintptr_t)((const uint16_t *)srcu + 1);
+				dstu = (uintptr_t)((uint16_t *)dstu + 1);
+			}
+			if (n & 0x04) {
+				*(uint32_t *)dstu = *(const uint32_t *)srcu;
+				srcu = (uintptr_t)((const uint32_t *)srcu + 1);
+				dstu = (uintptr_t)((uint32_t *)dstu + 1);
+			}
+			if (n & 0x08)
+				*(uint64_t *)dstu = *(const uint64_t *)srcu;
+			return ret;
+		}
+
+		/**
+		 * Fast way when copy size doesn't exceed 512 bytes
+		 */
+		if (n <= 32) {
+			__m128i xmm0, xmm1;
+			xmm0 = _mm_loadu_si128((const __m128i *)src);
+			xmm1 = _mm_loadu_si128((const __m128i *)
+				((const uint8_t *)src - 16 + n));
+			_mm_storeu_si128((__m128i *)dst, xmm0);
+			_mm_storeu_si128((__m128i *)
+				((uint8_t *)dst - 16 + n), xmm1);
+			return ret;
+		}
+		if (n <= 48) {
+			__m128i xmm0, xmm1, xmm2;
+			xmm0 = _mm_loadu_si128((const __m128i *)src);
+			xmm1 = _mm_loadu_si128((const __m128i *)
+				((const uint8_t *)src + 16));
+			xmm2 = _mm_loadu_si128((const __m128i *)
+				((const uint8_t *)src - 16 + n));
+			_mm_storeu_si128((__m128i *)dst, xmm0);
+			_mm_storeu_si128((__m128i *)
+				((uint8_t *)dst + 16), xmm1);
+			_mm_storeu_si128((__m128i *)
+				((uint8_t *)dst - 16 + n), xmm2);
+			return ret;
+		}
+		if (n <= 64) {
+			__m128i xmm0, xmm1, xmm2, xmm3;
+			xmm0 = _mm_loadu_si128((const __m128i *)src);
+			xmm1 = _mm_loadu_si128((const __m128i *)
+				((const uint8_t *)src + 16));
+			xmm2 = _mm_loadu_si128((const __m128i *)
+				((const uint8_t *)src + 32));
+			xmm3 = _mm_loadu_si128((const __m128i *)
+				((const uint8_t *)src - 16 + n));
+			_mm_storeu_si128((__m128i *)dst, xmm0);
+			_mm_storeu_si128((__m128i *)
+				((uint8_t *)dst + 16), xmm1);
+			_mm_storeu_si128((__m128i *)
+				((uint8_t *)dst + 32), xmm2);
+			_mm_storeu_si128((__m128i *)
+				((uint8_t *)dst - 16 + n), xmm3);
+			return ret;
+		}
+		if (n <= 128)
+			goto COPY_BLOCK_128_BACK15;
+		if (n <= 512) {
+			if (n >= 256) {
+				n -= 256;
+				__m128i xmm0, xmm1;
+				xmm0 = _mm_loadu_si128((const __m128i *)src);
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 16));
+				_mm_storeu_si128((__m128i *)dst, xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 16), xmm1);
+				xmm0 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 2*16));
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 3*16));
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 2*16), xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 3*16), xmm1);
+				xmm0 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 4*16));
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 5*16));
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 4*16), xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 5*16), xmm1);
+				xmm0 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 6*16));
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 7*16));
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 6*16), xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 7*16), xmm1);
+
+				xmm0 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 128));
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 128 + 16));
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 128), xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 128 + 16), xmm1);
+				xmm0 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 128 + 2*16));
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 128 + 3*16));
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 128 + 2*16), xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 128 + 3*16), xmm1);
+				xmm0 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 128 + 4*16));
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 128 + 5*16));
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 128 + 4*16), xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 128 + 5*16), xmm1);
+				xmm0 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 128 + 6*16));
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 128 + 7*16));
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 128 + 6*16), xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 128 + 7*16), xmm1);
+				src = (const uint8_t *)src + 256;
+				dst = (uint8_t *)dst + 256;
+			}
+COPY_BLOCK_255_BACK15:
+			if (n >= 128) {
+				n -= 128;
+				__m128i xmm0, xmm1;
+				xmm0 = _mm_loadu_si128((const __m128i *)src);
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 16));
+				_mm_storeu_si128((__m128i *)dst, xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 16), xmm1);
+				xmm0 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 2*16));
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 3*16));
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 2*16), xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 3*16), xmm1);
+				xmm0 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 4*16));
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 5*16));
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 4*16), xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 5*16), xmm1);
+				xmm0 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 6*16));
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 7*16));
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 6*16), xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 7*16), xmm1);
+				src = (const uint8_t *)src + 128;
+				dst = (uint8_t *)dst + 128;
+			}
+COPY_BLOCK_128_BACK15:
+			if (n >= 64) {
+				n -= 64;
+				__m128i xmm0, xmm1;
+				xmm0 = _mm_loadu_si128((const __m128i *)src);
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 16));
+				_mm_storeu_si128((__m128i *)dst, xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 16), xmm1);
+
+				xmm0 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 2*16));
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 3*16));
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 2*16), xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 3*16), xmm1);
+				src = (const uint8_t *)src + 64;
+				dst = (uint8_t *)dst + 64;
+			}
+COPY_BLOCK_64_BACK15:
+			if (n >= 32) {
+				n -= 32;
+				__m128i xmm0, xmm1;
+				xmm0 = _mm_loadu_si128((const __m128i *)src);
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 16));
+				_mm_storeu_si128((__m128i *)dst, xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 16), xmm1);
+				src = (const uint8_t *)src + 32;
+				dst = (uint8_t *)dst + 32;
+			}
+			if (n > 16) {
+				__m128i xmm0, xmm1;
+				xmm0 = _mm_loadu_si128((const __m128i *)src);
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src - 16 + n));
+				_mm_storeu_si128((__m128i *)dst, xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst - 16 + n), xmm1);
+				return ret;
+			}
+			if (n > 0) {
+				__m128i xmm0;
+				xmm0 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src - 16 + n));
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst - 16 + n), xmm0);
+			}
+			return ret;
+		}
+
+		/**
+		 * Make store aligned when copy size exceeds 512 bytes,
+		 * and make sure the first 15 bytes are copied, because
+		 * unaligned copy functions require up to 15 bytes
+		 * backwards access.
+		 */
+		dstofss = (uintptr_t)dst & 0x0F;
+		if (dstofss > 0) {
+			dstofss = 16 - dstofss + 16;
+			n -= dstofss;
+			__m128i xmm0, xmm1;
+			xmm0 = _mm_loadu_si128((const __m128i *)src);
+			xmm1 = _mm_loadu_si128((const __m128i *)
+				((const uint8_t *)src + 16));
+			_mm_storeu_si128((__m128i *)dst, xmm0);
+			_mm_storeu_si128((__m128i *)
+				((uint8_t *)dst + 16), xmm1);
+			src = (const uint8_t *)src + dstofss;
+			dst = (uint8_t *)dst + dstofss;
+		}
+		srcofs = ((uintptr_t)src & 0x0F);
+
+		/**
+		 * For aligned copy
+		 */
+		if (srcofs == 0) {
+			/**
+			 * Copy 256-byte blocks
+			 */
+			for (; n >= 256; n -= 256) {
+				__m128i xmm0, xmm1;
+				xmm0 = _mm_loadu_si128((const __m128i *)src);
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 16));
+				_mm_storeu_si128((__m128i *)dst, xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 16), xmm1);
+				xmm0 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 2*16));
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 3*16));
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 2*16), xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 3*16), xmm1);
+				xmm0 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 4*16));
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 5*16));
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 4*16), xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 5*16), xmm1);
+				xmm0 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 6*16));
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 7*16));
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 6*16), xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 7*16), xmm1);
+
+				xmm0 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 8*16));
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 9*16));
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 8*16), xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 9*16), xmm1);
+				xmm0 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 10*16));
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 11*16));
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 10*16), xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 11*16), xmm1);
+				xmm0 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 12*16));
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 13*16));
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 12*16), xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 13*16), xmm1);
+				xmm0 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 14*16));
+				xmm1 = _mm_loadu_si128((const __m128i *)
+					((const uint8_t *)src + 15*16));
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 14*16), xmm0);
+				_mm_storeu_si128((__m128i *)
+					((uint8_t *)dst + 15*16), xmm1);
+				dst = (uint8_t *)dst + 256;
+				src = (const uint8_t *)src + 256;
+			}
+
+			/**
+			 * Copy whatever left
+			 */
+			goto COPY_BLOCK_255_BACK15;
+		}
+
+		/**
+		 * For copy with unaligned load
+		 */
+		MOVEUNALIGNED_LEFT47(dst, src, n, srcofs);
+
+		/**
+		 * Copy whatever left
+		 */
+		goto COPY_BLOCK_64_BACK15;
+	}
+}
+
+static void __attribute__((constructor))
+rte_memcpy_init(void)
+{
+#ifdef CC_SUPPORT_AVX512
+	if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F)) {
+		rte_memcpy_ptr = rte_memcpy_AVX512F;
+		RTE_LOG(DEBUG, EAL, "AVX512 is using!\n");
+	} else
+#endif
+#ifdef CC_SUPPORT_AVX2
+	if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2)) {
+		rte_memcpy_ptr = rte_memcpy_AVX2;
+		RTE_LOG(DEBUG, EAL, "AVX2 is using!\n");
+	} else
+#endif
+	{
+		rte_memcpy_ptr = rte_memcpy_DEFAULT;
+		RTE_LOG(DEBUG, EAL, "Default SSE/AVX is using!\n");
+	}
+}
+
+#define MEMCPY_THRESH 128
 static inline void *
 rte_memcpy(void *dst, const void *src, size_t n)
 {
-	if (!(((uintptr_t)dst | (uintptr_t)src) & ALIGNMENT_MASK))
-		return rte_memcpy_aligned(dst, src, n);
+	if (n <= MEMCPY_THRESH) {
+		if (!(((uintptr_t)dst | (uintptr_t)src) & ALIGNMENT_MASK))
+			return rte_memcpy_aligned(dst, src, n);
+		else
+			return rte_memcpy_generic(dst, src, n);
+	}
 	else
-		return rte_memcpy_generic(dst, src, n);
+		return (*rte_memcpy_ptr)(dst, src, n);
 }
 
 #ifdef __cplusplus
