OcAppleKernelLib: Fix CPUID patching on 10.4.10 and 10.4.11

Changelog.md

@@ -7,6 +7,7 @@ OpenCore Changelog
 - Fixed `BOOTx64.efi` and `BOOTIA32.efi` convention
 - Fixed SMBIOS handling with multiple memory arrays
 - Fixed memory array handle assignment on empty slots
+- Fixed CPUID patching on certain versions of macOS 10.4.10 and 10.4.11.
 
 #### v0.6.2
 - Updated builtin firmware versions for SMBIOS and the rest

Library/OcAppleKernelLib/CpuidPatches.c

@@ -160,6 +160,7 @@ PatchKernelCpuIdLegacy (
   UINT8                 *LocationSnow32;
   UINT32                Signature[3];
   BOOLEAN               IsTiger;
+  BOOLEAN               IsTigerOld;
   BOOLEAN               IsLeopard;
   BOOLEAN               IsSnow;
   BOOLEAN               IsLion;
@@ -168,7 +169,11 @@ PatchKernelCpuIdLegacy (
   INT32                 Delta;
   INTERNAL_CPUID_PATCH  Patch;
 
+  //
+  // XNU 8.10.1 and older require an additional patch to _tsc_init.
+  //
   IsTiger     = OcMatchDarwinVersion (KernelVersion, KERNEL_VERSION_TIGER_MIN, KERNEL_VERSION_TIGER_MAX);
+  IsTigerOld  = OcMatchDarwinVersion (KernelVersion, KERNEL_VERSION_TIGER_MIN, KERNEL_VERSION (8, 10, 1));
   IsLeopard   = OcMatchDarwinVersion (KernelVersion, KERNEL_VERSION_LEOPARD_MIN, KERNEL_VERSION_LEOPARD_MAX);
   IsSnow      = OcMatchDarwinVersion (KernelVersion, KERNEL_VERSION_SNOW_LEOPARD_MIN, KERNEL_VERSION_SNOW_LEOPARD_MAX);
   IsLion      = OcMatchDarwinVersion (KernelVersion, KERNEL_VERSION_LION_MIN, KERNEL_VERSION_LION_MAX);
@@ -509,8 +514,13 @@ PatchKernelCpuIdLegacy (
 
   //
   // Locate _tsc_init on 10.4, as there is a CPUID (1) call that needs to be patched.
+  // This only applies to XNU 8.10.1 and older. Some recovery versions of
+  // 10.4.10 have a newer XNU 8.10.3 kernel with code changes to _tsc_init.
   //
-  if (IsTiger) {
+  // It's possible 8.10.2 may require the patch, but there is no sources or kernels
+  // available to verify.
+  //
+  if (IsTigerOld) {
     Status = PatcherGetSymbolAddress (Patcher, "_tsc_init", (UINT8 **) &Record);
     if (EFI_ERROR (Status) || Record >= Last) {
       DEBUG ((DEBUG_WARN, "OCAK: Failed to locate _tsc_init (%p) - %r\n", Record, Status));