Add NOX2APIC boot parameter to bypass hardware detection

2026-05-15 12:00:50 +02:00
parent 6bbeb657ea
commit 8ee97ac0ae
2 changed files with 11 additions and 0 deletions
--- a/xtoskrnl/hl/x86/pic.cc
+++ b/xtoskrnl/hl/x86/pic.cc
@@ -102,6 +102,14 @@ BOOLEAN
 HL::Pic::CheckX2ApicSupport(VOID)
 {
    PKPROCESSOR_CONTROL_BLOCK Prcb;
+    PCWSTR KernelParameter;
+
+    /* Check if the user forced xAPIC via boot parameters */
+    if(KE::BootInformation::GetKernelParameter(L"NOX2APIC", &KernelParameter) == STATUS_SUCCESS)
+    {
+        /* The NOX2APIC flag is present, explicitly disable x2APIC support */
+        return FALSE;
+    }

    /* Get current processor control block */
    Prcb = KE::Processor::GetCurrentProcessorControlBlock();