diff --git a/.SRCINFO b/.SRCINFO
index ad63eca..1d0be4d 100644
--- a/.SRCINFO
+++ b/.SRCINFO
@@ -1,7 +1,7 @@
 pkgbase = linux-clear
 	pkgdesc = Linux kernel with patches from Clear Linux which allow for higher performance.
 	pkgver = 6.12.1
-	pkgrel = 2
+	pkgrel = 3
 	url = https://git.staropensource.de/JeremyStarTM/aur-linux-clear
 	arch = x86_64
 	license = GPL-2.0-only
diff --git a/PKGBUILD b/PKGBUILD
index 55ef0c6..587122e 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -111,6 +111,18 @@
 #  43. AMD-Native optimizations autodetected by the compiler (MNATIVE_AMD)
 : "${_subarch:=""}"
 
+# Selects the x86-64 microarchitecture to compile for.
+# This value is only used by the GENERIC_CPU
+# subarchitecture and is required.
+# Can be either '1', '2', '3' or '4'
+# 
+# Set to '1' by default
+#
+# For more information see:
+# https://en.wikipedia.org/wiki/X86-64#Microarchitecture_levels
+: "${_subarch_microarch:="1"}"
+
+
 # Enable compilation with LLVM
 # Be warned, this is largely untested by me (JeremyStarTM). It *should* work,
 # but if it doesn't, write a comment and I'll fix it.
@@ -143,7 +155,7 @@ _src_clr=${_kernel_major}.${_clr}
 # Package information
 pkgbase=linux-clear
 pkgver=${_kernel_major}.${_kernel_minor}
-pkgrel=2
+pkgrel=3
 pkgdesc="Linux kernel with patches from Clear Linux which allow for higher performance."
 arch=("x86_64")
 url="https://git.staropensource.de/JeremyStarTM/aur-linux-clear"
@@ -309,9 +321,17 @@ update_defconfig() {
     patch -Np1 -i "$srcdir/kernel_compiler_patch-$_kernelcompilerpatch/more-ISA-levels-and-uarches-for-kernel-6.1.79+.patch"
     
     # Set subarch automatically
-    [[ -n "${_subarch}" ]] && yes "${_subarch}" | make ${BUILD_FLAGS[*]} oldconfig
-    # Ask for subarch
-    [[ -z "${_subarch}" ]] && make ${BUILD_FLAGS[*]} oldconfig
+    if [ -n "${_subarch}" ]; then
+        if [ "${_subarch}" == "41" ]; then
+            yes "${_subarch}
+${_subarch_microarch}" | make ${BUILD_FLAGS[*]} oldconfig
+        else
+            yes "${_subarch}" | make ${BUILD_FLAGS[*]} oldconfig
+        fi
+    else
+        # Ask for subarch
+        make ${BUILD_FLAGS[*]} oldconfig
+    fi
 }
 
 # Prepares the installation
diff --git a/README.md b/README.md
index 199bbf1..bfddffd 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,8 @@ The PKGBUILD file supports customization via environment variables. Here's a lis
 - `_copyfinalconfig`: Copies the final kernel configuration into the repository root as `kconfig-new` before compilation starts
 - `_localmodcfg`: Only compiles modules found in modprobed-db's database (which decreases compilation time and kernel size)
 - `_use_llvm_lto`: Compiles the kernel with LLVM instead of GCC. Should work, if not open an issue
-- `_subarch`: Specifies the sub architecture to compile for (see the [PKGBUILD file](https://git.staropensource.de/JeremyStarTM/aur-linux-clear/src/branch/develop/PKGBUILD) for a list of all subarches). Default is `41` (Generic x86-64), which is compatible with all amd64 processors. Must be a number
+- `_subarch`: Specifies the subarchitecture to compile for (see the [PKGBUILD file](https://git.staropensource.de/JeremyStarTM/aur-linux-clear/src/branch/develop/PKGBUILD) for a list of all subarches). Default is `41` (Generic x86-64), which is compatible with all amd64 processors. Must be a number
+- `_subarch_microarch`: Specifies the microarchitecture to compile for. Only applies to and is required by the GENERIC_CPU subarch. Must be a number between `1` and `4` ([click for more information](https://en.wikipedia.org/wiki/X86-64#Microarchitecture_levels))
 - `_debug`: Force enables debug options when set to `y`, force disables debug options when set to `n` or uses the config defaults when unset
 
 All of these variables just need to be set for them to apply, except for `_subarch` and `_debug`. See their descriptions for more information.