bump-allocated PID but kheap needs fix to kmalloc more than PAGE_SIZE

src/mem/heap/kheap.c

@@ -3,6 +3,7 @@
 #include "mem/paging/pmm.h"
 #include <stddef.h>
 #include <kernel.h>
+#include "sched/process.h"
 
 extern uint64_t kernel_phys_base;
 extern uint64_t kernel_virt_base;
@@ -103,4 +104,12 @@ void kfree(void* ptr)
     // Set it free!
     struct heap_block_t* block = (struct heap_block_t*)((uintptr_t)ptr - sizeof(struct heap_block_t));
     block->free = true;
+}
+
+// Should alloc enough for a stack (at least 64kb) to be used for a process.
+// Should return a pointer to top of the stack (as stack grows DOWNWARDS)
+void* kalloc_stack()
+{
+    void* ptr = kmalloc(PROCESS_STACK_SIZE);
+    return ptr+PROCESS_STACK_SIZE;
 }