diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 3a2d24fd0d..db0d294b45 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -3,9 +3,9 @@
   <ProductDependencies>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="6.0.0-beta.20526.10">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="6.0.0-beta.20527.10">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>c0f916d7f45834c080bf6cce60cf2bcfa00bc0a7</Sha>
+      <Sha>51f14c7da74e5c3d2ce0bab077461da399333896</Sha>
     </Dependency>
   </ToolsetDependencies>
 </Dependencies>
diff --git a/eng/common/cross/build-rootfs.sh b/eng/common/cross/build-rootfs.sh
index a841c64f3f..575eee9fa1 100755
--- a/eng/common/cross/build-rootfs.sh
+++ b/eng/common/cross/build-rootfs.sh
@@ -106,6 +106,13 @@ while :; do
             __UbuntuRepo="http://ftp.debian.org/debian/"
             __CodeName=jessie
             ;;
+        s390x)
+            __BuildArch=s390x
+            __UbuntuArch=s390x
+            __UbuntuRepo="http://ports.ubuntu.com/ubuntu-ports/"
+            __UbuntuPackages=$(echo ${__UbuntuPackages} | sed 's/ libunwind8-dev//')
+            unset __LLDB_Package
+            ;;
         x86)
             __BuildArch=x86
             __UbuntuArch=i386
diff --git a/eng/common/cross/s390x/sources.list.bionic b/eng/common/cross/s390x/sources.list.bionic
new file mode 100644
index 0000000000..2109557409
--- /dev/null
+++ b/eng/common/cross/s390x/sources.list.bionic
@@ -0,0 +1,11 @@
+deb http://ports.ubuntu.com/ubuntu-ports/ bionic main restricted universe
+deb-src http://ports.ubuntu.com/ubuntu-ports/ bionic main restricted universe
+
+deb http://ports.ubuntu.com/ubuntu-ports/ bionic-updates main restricted universe
+deb-src http://ports.ubuntu.com/ubuntu-ports/ bionic-updates main restricted universe
+
+deb http://ports.ubuntu.com/ubuntu-ports/ bionic-backports main restricted
+deb-src http://ports.ubuntu.com/ubuntu-ports/ bionic-backports main restricted
+
+deb http://ports.ubuntu.com/ubuntu-ports/ bionic-security main restricted universe multiverse
+deb-src http://ports.ubuntu.com/ubuntu-ports/ bionic-security main restricted universe multiverse
diff --git a/eng/common/cross/toolchain.cmake b/eng/common/cross/toolchain.cmake
index 8b437d8ade..fc11001aa7 100644
--- a/eng/common/cross/toolchain.cmake
+++ b/eng/common/cross/toolchain.cmake
@@ -36,6 +36,9 @@ elseif(TARGET_ARCH_NAME STREQUAL "arm64")
   if("$ENV{__DistroRid}" MATCHES "tizen.*")
     set(TIZEN_TOOLCHAIN "aarch64-tizen-linux-gnu/9.2.0")
   endif()
+elseif(TARGET_ARCH_NAME STREQUAL "s390x")
+  set(CMAKE_SYSTEM_PROCESSOR s390x)
+  set(TOOLCHAIN "s390x-linux-gnu")
 elseif(TARGET_ARCH_NAME STREQUAL "x86")
   set(CMAKE_SYSTEM_PROCESSOR i686)
   set(TOOLCHAIN "i686-linux-gnu")
@@ -46,7 +49,7 @@ elseif (ILLUMOS)
   set(CMAKE_SYSTEM_PROCESSOR "x86_64")
   set(TOOLCHAIN "x86_64-illumos")
 else()
-  message(FATAL_ERROR "Arch is ${TARGET_ARCH_NAME}. Only armel, arm, arm64 and x86 are supported!")
+  message(FATAL_ERROR "Arch is ${TARGET_ARCH_NAME}. Only armel, arm, arm64, s390x and x86 are supported!")
 endif()
 
 if(DEFINED ENV{TOOLCHAIN})
@@ -171,7 +174,7 @@ endif()
 
 # Specify compile options
 
-if((TARGET_ARCH_NAME MATCHES "^(arm|armel|arm64)$" AND NOT "$ENV{__DistroRid}" MATCHES "android.*") OR ILLUMOS)
+if((TARGET_ARCH_NAME MATCHES "^(arm|armel|arm64|s390x)$" AND NOT "$ENV{__DistroRid}" MATCHES "android.*") OR ILLUMOS)
   set(CMAKE_C_COMPILER_TARGET ${TOOLCHAIN})
   set(CMAKE_CXX_COMPILER_TARGET ${TOOLCHAIN})
   set(CMAKE_ASM_COMPILER_TARGET ${TOOLCHAIN})
diff --git a/eng/common/performance/crossgen_perf.proj b/eng/common/performance/crossgen_perf.proj
index 3b8dfc2b1f..79a5486546 100644
--- a/eng/common/performance/crossgen_perf.proj
+++ b/eng/common/performance/crossgen_perf.proj
@@ -65,6 +65,24 @@
     </Crossgen2SingleThreadedWorkItem>
   </ItemGroup>
 
+  <ItemGroup>
+    <CrossgenSizeOnDiskWorkItem Include="@(SingleAssembly)" Condition="'$(Architecture)' == 'x64'">
+      <PayloadDirectory>$(WorkItemDirectory)</PayloadDirectory>
+      <PreCommands>$(Python) pre.py crossgen --core-root $(CoreRoot) --single %(Identity) </PreCommands>
+      <Command>$(Python) test.py sod --scenario-name &quot;Crossgen %(Identity) Size&quot; --dirs ./crossgen/</Command>
+      <PostCommands>$(Python) post.py</PostCommands>
+    </CrossgenSizeOnDiskWorkItem>
+  </ItemGroup>
+
+  <ItemGroup>
+    <Crossgen2SizeOnDiskWorkItem Include="@(SingleAssembly)" Condition="'$(Architecture)' == 'x64'">
+      <PayloadDirectory>$(WorkItemDirectory)</PayloadDirectory>
+      <PreCommands>$(Python) $(Crossgen2Directory)pre.py crossgen2 --core-root $(CoreRoot) --single %(Identity) </PreCommands>
+      <Command>$(Python) test.py sod --scenario-name &quot;Crossgen2 %(Identity) Size&quot; --dirs ./crossgen/</Command>
+      <PostCommands>$(Python) post.py</PostCommands>
+    </Crossgen2SizeOnDiskWorkItem>
+  </ItemGroup>
+
   <ItemGroup>
     <!-- Enable crossgen tests on Windows x64 and Windows x86 -->
     <HelixWorkItem Include="@(CrossgenWorkItem -> 'Crossgen %(Identity)')" Condition="'$(AGENT_OS)' == 'Windows_NT'">
@@ -82,5 +100,11 @@
       <Command>$(Python) $(Crossgen2Directory)test.py crossgen2 --core-root $(CoreRoot) --composite $(Crossgen2Directory)framework-r2r.dll.rsp</Command>
       <Timeout>1:00</Timeout>  
     </HelixWorkItem>
+    <HelixWorkItem Include="@(CrossgenSizeOnDiskWorkItem -> 'Crossgen Size on Disk %(Identity)')" Condition="'$(Architecture)' == 'x64'">
+      <Timeout>4:00</Timeout>  
+    </HelixWorkItem>
+    <HelixWorkItem Include="@(Crossgen2SizeOnDiskWorkItem -> 'Crossgen2 Size on Disk %(Identity)')" Condition="'$(Architecture)' == 'x64'">
+      <Timeout>4:00</Timeout>  
+    </HelixWorkItem>
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/global.json b/global.json
index 7a6f738d99..eace20a300 100644
--- a/global.json
+++ b/global.json
@@ -17,6 +17,6 @@
     "xcopy-msbuild": "16.8.0-preview2.1"
   },
   "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "6.0.0-beta.20526.10"
+    "Microsoft.DotNet.Arcade.Sdk": "6.0.0-beta.20527.10"
   }
 }