From 48c35255481e63500dfbf9e25cf7426c41927c0d Mon Sep 17 00:00:00 2001
From: Tanner Gooding <tagoo@outlook.com>
Date: Tue, 16 Nov 2021 16:23:54 -0800
Subject: [PATCH 1/2] Adding support for the X86Base.Pause intrinsic on Mono

---
 src/mono/mono/mini/simd-intrinsics.c | 1 +
 src/mono/mono/mini/simd-methods.h    | 1 +
 2 files changed, 2 insertions(+)

diff --git a/src/mono/mono/mini/simd-intrinsics.c b/src/mono/mono/mini/simd-intrinsics.c
index 38e40bffde0f83..957cfb9b6dd04d 100644
--- a/src/mono/mono/mini/simd-intrinsics.c
+++ b/src/mono/mono/mini/simd-intrinsics.c
@@ -2310,6 +2310,7 @@ static SimdIntrinsic bmi2_methods [] = {
 static SimdIntrinsic x86base_methods [] = {
 	{SN_BitScanForward},
 	{SN_BitScanReverse},
+	{SN_Pause, OP_XOP, INTRINS_SSE_PAUSE},
 	{SN_get_IsSupported}
 };
 
diff --git a/src/mono/mono/mini/simd-methods.h b/src/mono/mono/mini/simd-methods.h
index d223b2ba5aee87..1f1079694bb5f0 100644
--- a/src/mono/mono/mini/simd-methods.h
+++ b/src/mono/mono/mini/simd-methods.h
@@ -256,6 +256,7 @@ METHOD(ComputeCrc32C)
 // X86Base
 METHOD(BitScanForward)
 METHOD(BitScanReverse)
+METHOD(Pause)
 // Crypto
 METHOD(FixedRotate)
 METHOD(HashUpdateChoose)

From 1aca1caff5dff9f1ace8e56085460f2696e9df86 Mon Sep 17 00:00:00 2001
From: Tanner Gooding <tagoo@outlook.com>
Date: Sun, 21 Nov 2021 09:23:03 -0800
Subject: [PATCH 2/2] Re-enable the pause hwintrinsic test on Mono

---
 src/tests/issues.targets | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/src/tests/issues.targets b/src/tests/issues.targets
index 5921fd7bc82937..14aacc6351601f 100644
--- a/src/tests/issues.targets
+++ b/src/tests/issues.targets
@@ -843,9 +843,6 @@
 
     <!-- Known failures for mono runtime on *all* architectures/operating systems in *all* runtime modes -->
     <ItemGroup Condition="'$(RuntimeFlavor)' == 'mono'" >
-        <ExcludeList Include = "$(XUnitTestBinBase)/JIT/HardwareIntrinsics/X86/X86Base/Pause*/**">
-            <Issue>https://github.com/dotnet/runtime/issues/61693</Issue>
-        </ExcludeList>
         <ExcludeList Include = "$(XunitTestBinBase)/reflection/GenericAttribute/**">
             <Issue>https://github.com/dotnet/runtime/issues/56887</Issue>
         </ExcludeList>