replace the VHD/diskpart disk image pipeline with a directory-based vvfat root, we'll see when it breaks, fix /O2, add an all_tests, generalize the fat32 driver into a fat 16+32 driver, change policy on volume drivers, collapse KCPU's fields into a single atomic KE_CPU_STATE state machine, move scheduler ticking to per-CPU LAPIC timers, gate verbose SMP topology logging behind selftest diagnostics and add SMP pool-checkpoint validation around AP admission, add checked intrusive list helpers behind a new KE_DEBUG_LIST_CHECKS flag, add ObInitializeObjectHeader/ObTryReferenceObject, add waitable display clock objects and a SYS_OPEN_DISPLAY_CLOCK syscall for vsync-style waits, refactor kernel input into a per-queue KE_INPUT_CONTEXT with its own key/mouse ring buffers and DPC-driven key repeat, add KeInputQueuePeekEvent/ReadEvent/WaitKey and a SYS_QUERY_GLOBAL_INPUT_STATE syscall, split the kernel pool allocator out of mm_virt, new video files!

code/kernel/ke_dpc.c

@@ -1,6 +1,7 @@
 // Deferred procedure call infrastructure. This file owns DPC queuing and execution outside hard IRQ context.
 
 #include <kernel/ke_dpc.h>
+#include <kernel/ke_list.h>
 #include <kernel/ke_irql.h>
 #include <kernel/ke_debug.h>
 #include <intrin.h>
@@ -58,7 +59,7 @@ __declspec(dllexport) bool KeInsertQueueDpc(KDPC* dpc,
     dpc->SystemArgument2 = systemArgument2;
 
     uintptr_t flags = KeAcquireSpinlock(&gDpcLock);
-    ListInsertTail(&gDpcQueue, &dpc->Link);
+    KeListInsertTailChecked(&gDpcQueue, &dpc->Link);
     KeReleaseSpinlock(&gDpcLock, flags);
     return true;
 }
@@ -82,7 +83,7 @@ void KiDrainDpcQueue(void) {
 
     for (;;) {
         uintptr_t flags = KeAcquireSpinlock(&gDpcLock);
-        LIST_ENTRY* node = ListPopHead(&gDpcQueue);
+        LIST_ENTRY* node = KeListPopHeadChecked(&gDpcQueue);
         if (!node) {
             KeReleaseSpinlock(&gDpcLock, flags);
             break;