diff --git a/backends/xnnpack/third-party/XNNPACK b/backends/xnnpack/third-party/XNNPACK
index 84096dd536e..52208356940 160000
--- a/backends/xnnpack/third-party/XNNPACK
+++ b/backends/xnnpack/third-party/XNNPACK
@@ -1 +1 @@
-Subproject commit 84096dd536edffd19337d9297634c4f5c5449bfd
+Subproject commit 52208356940a7c7d3597cf386d500a0f776f7bd0
diff --git a/backends/xnnpack/third-party/xnnpack.buck.bzl b/backends/xnnpack/third-party/xnnpack.buck.bzl
index c01512eed26..14520b07664 100644
--- a/backends/xnnpack/third-party/xnnpack.buck.bzl
+++ b/backends/xnnpack/third-party/xnnpack.buck.bzl
@@ -274,6 +274,38 @@ def define_xnnpack():
         ],
     )
 
+    SSE2_FMA_COMPILER_FLAGS = [
+        "-msse2",
+        "-mno-sse3",
+    ]
+
+    native.cxx_library(
+        name = "ukernels_sse2fma",
+        srcs = select({
+            "DEFAULT": prod_srcs_for_arch_wrapper("sse2fma"),
+            "ovr_config//cpu:arm32": DEFAULT_DUMMY_SRC,
+            "ovr_config//cpu:arm64": DEFAULT_DUMMY_SRC,
+        }),
+        headers = get_xnnpack_headers(),
+        header_namespace = "",
+        compiler_flags = [
+            "-O2",
+            "-Wno-error=missing-braces",  # required since the SGX toolchain does not have this by default
+        ] + select({
+            "DEFAULT": SSE2_FMA_COMPILER_FLAGS,
+            "ovr_config//cpu:arm32": [],
+            "ovr_config//cpu:arm64": [],
+        }),
+        preferred_linkage = "static",
+        preprocessor_flags = [
+            "-DXNN_LOG_LEVEL=0",
+        ],
+        exported_deps = [
+            ":FP16",
+            ":interface",
+        ],
+    )
+
     SSE3_COMPILER_FLAGS = ["-mssse3"]
 
     # @lint-ignore BUCKLINT: native and fb_native are explicitly forbidden in fbcode.
@@ -961,6 +993,44 @@ def define_xnnpack():
         ],
     )
 
+    AMD64_COMPILER_FLAGS = [
+        "-mf16c",
+        "-mfma",
+        "-mavx512f",
+        "-mavx512cd",
+        "-mavx512bw",
+        "-mavx512dq",
+        "-mavx512vl",
+        "-mavx512vnni",
+        "-mgfni",
+    ]
+    native.cxx_library(
+        name = "ukernels_amd64",
+        srcs = select({
+            "DEFAULT": prod_srcs_for_arch_wrapper("amd64"),
+            "ovr_config//cpu:arm32": DEFAULT_DUMMY_SRC,
+            "ovr_config//cpu:arm64": DEFAULT_DUMMY_SRC,
+        }),
+        headers = get_xnnpack_headers(),
+        header_namespace = "",
+        compiler_flags = [
+            "-O2",
+            "-Wno-error=missing-braces",  # required since the SGX toolchain does not have this by default
+        ] + select({
+            "DEFAULT": AMD64_COMPILER_FLAGS,
+            "ovr_config//cpu:arm32": [],
+            "ovr_config//cpu:arm64": [],
+        }),
+        preferred_linkage = "static",
+        preprocessor_flags = [
+            "-DXNN_LOG_LEVEL=0",
+        ],
+        exported_deps = [
+            ":FP16",
+            ":interface",
+        ],
+    )
+
     AVX512VNNIGFNI_COMPILER_FLAGS = AVX512VNNI_COMPILER_FLAGS + [
         "-mgfni",
     ]
@@ -1044,12 +1114,14 @@ def define_xnnpack():
         ":ukernels_fma3",
         ":ukernels_sse",
         ":ukernels_sse2",
+        ":ukernels_sse2fma",
         ":ukernels_sse41",
         ":ukernels_ssse3",
         ":ukernels_avx512vbmi",
         ":ukernels_avx512vnnigfni",
         ":ukernels_avx512vnni",
         ":ukernels_avxvnni",
+        ":ukernels_amd64",
     ]
 
     ARM_XNNPACK_DEPS = [
@@ -1097,10 +1169,22 @@ def define_xnnpack():
             "-DXNN_ENABLE_GEMM_M_SPECIALIZATION",
             "-DXNN_ENABLE_ARM_DOTPROD",
             "-DXNN_ENABLE_CPUINFO",
-            # "-DXNN_ENABLE_DWCONV_MULTIPLASS=1",
+            # "-DXNN_ENABLE_DWCONV_MULTIPLASS=0",
             "-DXNN_ENABLE_ARM_I8MM=1",
             "-DXNN_ENABLE_ARM_FP16_VECTOR=1",
-            "-DXNN_ENABLE_AVX512BF16=0"
+            "-DXNN_ENABLE_AVX512F=1",
+            "-DXNN_ENABLE_AVX512SKX=1",
+            "-DXNN_ENABLE_AVX512VNNI=1",
+            "-DXNN_ENABLE_AVX512VBMI=1",
+            "-DXNN_ENABLE_AVXVNNI=0",
+            "-DXNN_ENABLE_AVXVNNIINT8=0",
+            "-DXNN_ENABLE_AVX512FP16=0",
+            "-DXNN_ENABLE_AVX512VNNIGFNI=0",
+            "-DXNN_ENABLE_AVX512BF16=0",
+            "-DXNN_ENABLE_AVX256VNNIGFNI=0",
+            "-DXNN_ENABLE_AVX512AMX=0",
+            "-DXNN_ENABLE_AVX256SKX=0",
+            "-DXNN_ENABLE_AVX256VNNI=0",
         ],
         visibility = ["PUBLIC"],
         exported_deps = COMMON_XNNPACK_DEPS + [