parallel compile, SMP, swapgs, cleanup, remove useless Reserved fields

code/kernel/kmain.c

@@ -21,6 +21,7 @@
 #include <ntlite/ddi/hal_api.h>
 #include <kernel/io_file.h>
 #include <kernel/ke_selftest.h>
+#include <kernel/ke_smp.h>
 #include <common/ini_parser.h>
 
 typedef struct {
@@ -380,6 +381,8 @@ void SystemInitThread(void* arg) {
 
     DbgPrint("SystemInitThread: Thread started. Igniting the system...\n");
 
+    KiRunEarlyKernelSelfTests();
+
     KiInitializeDrivers(args->bootInfo, args->hal);
 
     KiResolveSystemImports(args->bootInfo);
@@ -436,7 +439,7 @@ extern void KernelMain(BOOT_INFO* bootInfo) {
     }
 
     PHYSICAL_ADDRESS pml4 = (PHYSICAL_ADDRESS)__readcr3();
-    MmInitializeVirtual(pml4, 4 * 1024 * 1024 /* 4 MB initial pool */);
+    MmInitializeVirtual(pml4, 1 * 1024 * 1024 /* 1 MB initial pool */);
 
     //
     // Bootstrap CPU and architecture setup (GDT/IDT/Faults)
@@ -472,7 +475,17 @@ extern void KernelMain(BOOT_INFO* bootInfo) {
     const HAL_API* hal = HalGetApi();
     gKmainHal = hal;
 
-    KeInitDebug(hal->Screen.PrintChar, bootInfo->Debug & 1); // Enable debug
+    KeInitDebug(hal->Screen.PrintChar, bootInfo->Debug & 1);
+
+    // CPU startup intentionally lives after HAL initialization but before IRQs
+    // and scheduler startup. HAL owns ACPI/MADT discovery and LAPIC INIT/SIPI;
+    // the kernel owns KCPU records, per-CPU stacks, GDT/TSS/IDT state, and the
+    // AP park loop. External device IRQs remain routed to the BSP during this
+    // step; APs only become runnable after scheduler admission below.
+    KSTATUS smpStatus = KeStartApplicationProcessors();
+    if (!KSUCCESS(smpStatus)) {
+        KePanic(KE_PANIC_CODE_INIT, "SMP: failed to start application processors, status=0x%x\n", smpStatus);
+    }
 
     KeIrqInitialize(hal);
     KeInitializeDpcSystem();
@@ -501,6 +514,13 @@ extern void KernelMain(BOOT_INFO* bootInfo) {
     //
     KeInitializeScheduler();
 
+    KSTATUS smpSchedStatus = KeAdmitApplicationProcessorsToScheduler();
+    if (!KSUCCESS(smpSchedStatus)) {
+        KePanic(KE_PANIC_CODE_INIT, "SMP: failed to admit APs to scheduler, status=0x%x\n", smpSchedStatus);
+    }
+
+    KiRunCoreHardeningSelfTests();
+
     // Pack the arguments for the init thread
     SYSTEM_INIT_ARGS* initArgs = MmAllocatePool(sizeof(SYSTEM_INIT_ARGS));
     initArgs->bootInfo = bootInfo;