feat: fireworks!

src/mm/init.zig

@@ -28,6 +28,15 @@ pub const map_kernel = if (!is_um)
             const rodata_size = rodata_end - rodata_start;
             const data_size = data_end - data_start;
 
+            const start_phys = kaddr.physical_base;
+            const start_virt = kaddr.virtual_base;
+            const until_size = text_start - start_virt;
+            mi.kernel_pmap.map_contiguous_range(start_virt, start_phys, until_size, .{
+                .read = true,
+                .write = true,
+                .global = true,
+            });
+
             mi.kernel_pmap.map_contiguous_range(text_start, kaddr.physical_base + (text_start - kaddr.virtual_base), text_size, .{
                 .read = true,
                 .execute = true,

src/mm/phys.zig

@@ -51,6 +51,15 @@ var batch_pool: std.atomic.Value(GlobalHead) = .init(.{
     .tag = 0,
 });
 
+export const phys_percpu_init linksection(r.percpu_init) = &init_cpu;
+
+fn init_cpu() callconv(.c) void {
+    const cpu = percpu.local();
+    cpu.active_batch = null;
+    cpu.active_count = 0;
+    cpu.depot_count = 0;
+}
+
 /// Push a batch of free pages to the global pool.
 fn push_to_pool(batch: *mm.Page) void {
     var old_head = batch_pool.load(.acquire);

src/mm/zone.zig

@@ -766,12 +766,14 @@ pub fn late_init() linksection(r.init) void {
             z.cpus = gpa.alloc(Cpu, ke.ncpus) catch @panic("Failed to allocate per-CPU magazine state");
 
             for (0..ke.ncpus) |i| {
-                z.cpus[i].lock = .init();
-                z.cpus[i].alloc = null;
-                z.cpus[i].free = null;
-                z.cpus[i].alloc_rounds = 0;
-                z.cpus[i].free_rounds = 0;
-                z.cpus[i].magazine_size = z.magtype.?.rounds;
+                z.cpus[i] = .{
+                    .lock = .init(),
+                    .alloc = null,
+                    .free = null,
+                    .alloc_rounds = 0,
+                    .free_rounds = 0,
+                    .magazine_size = z.magtype.?.rounds,
+                };
             }
         }
         zone = z.next;