patchsets: Avoid downgrading AppleGVA on AMD Polaris+ GPUs

CHANGELOG.md

@@ -3,6 +3,8 @@
 ## 2.1.0
 - Fix Nvidia Kepler patches not installing on Monterey
 - Fix `iMac7,1` and `iMac8,1` failing to apply root patches on macOS Sequoia
+- Avoid downgrading AppleGVA stack on AMD Polaris and Vega GPUs
+  - Thanks @ausdauersportler for the catch!
 - Increment binaries:
   - PatcherSupportPkg 1.8.2 - release
 

opencore_legacy_patcher/sys_patch/patchsets/hardware/graphics/amd_polaris.py

@@ -139,10 +139,9 @@ class AMDPolaris(BaseHardware):
                 **AMDOpenCL(self._xnu_major, self._xnu_minor, self._constants.detected_os_version).patches(),
             })
 
-        if self._is_gpu_architecture_present(gpu_architectures=[device_probe.Intel.Archs.Skylake]) is False:
+        # Polaris and Vega GPUs still use the native GVA stack
-            # Monterey GVA is not required for Intel Skylake iGPUs
+        _base.update({
-            _base.update({
+            **MontereyGVA(self._xnu_major, self._xnu_minor, self._constants.detected_os_version).revert_patches(),
-                **MontereyGVA(self._xnu_major, self._xnu_minor, self._constants.detected_os_version).patches(),
+        })
-            })
 
         return _base

opencore_legacy_patcher/sys_patch/patchsets/hardware/graphics/amd_vega.py

@@ -122,7 +122,9 @@ class AMDVega(BaseHardware):
             return {}
 
         return {
-            **MontereyGVA(self._xnu_major, self._xnu_minor, self._constants.detected_os_version).patches(),
+            # Polaris and Vega GPUs still use the native GVA stack
+            **MontereyGVA(self._xnu_major, self._xnu_minor, self._constants.detected_os_version).revert_patches(),
+
             **MontereyOpenCL(self._xnu_major, self._xnu_minor, self._constants.detected_os_version).patches(),
             **AMDOpenCL(self._xnu_major, self._xnu_minor, self._constants.detected_os_version).patches(),
             **self._model_specific_patches(),

opencore_legacy_patcher/sys_patch/patchsets/shared_patches/monterey_gva.py

@@ -40,3 +40,24 @@ class MontereyGVA(BaseSharedPatchSet):
                 },
             },
         }
+
+
+    def revert_patches(self) -> dict:
+        """
+        Revert if patches are no longer required/misapplied
+        """
+        if self._os_requires_patches() is False:
+            return {}
+
+        return {
+            "Revert Monterey GVA": {
+                PatchType.REMOVE_SYSTEM_VOLUME: {
+                    "/System/Library/PrivateFrameworks/AppleGVA.framework/Versions/A": [
+                        "AppleGVA"
+                    ],
+                    "/System/Library/PrivateFrameworks/AppleGVACore.framework/Versions/A": [
+                        "AppleGVACore"
+                    ],
+                }
+            }
+        }