Basic physical memory management

src/kernel.zig

@@ -8,15 +8,15 @@ pub const thread = @import("thread.zig");
 pub const log = debug.log;
 pub const vmm = mem.vmm;
 
+pub const TRACE_PHYSICAL_ALLOCATOR: bool = false;
+
 const std = @import("std");
 
 fn f0(arg: usize) callconv(.C) noreturn {
-    log.write("\x1B[2J", .{});
     var c: usize = 0;
     while (true) {
         f1(arg, c);
         c += 1;
-        thread.yield();
     }
 }
 
@@ -28,7 +28,8 @@ pub export fn kernel_main() callconv(.C) noreturn {
     var a = arena.Arena.setup(256 * 0x1000) orelse @panic("Could not setup kernel arena");
     const pc = @intFromPtr(&f0);
 
-    for (0..8) |i| {
+    // log.write("\x1B[2J", .{});
+    for (0..32) |i| {
         const t = thread.Thread.create(&a, pc, i);
         thread.addThread(t);
     }
@@ -44,8 +45,8 @@ pub fn panic(msg: []const u8, error_return_trace: ?*std.builtin.StackTrace, retu
     const ra = return_address orelse @returnAddress();
 
     log.err("!!! Kernel panic !!!", .{});
-    log.err("    Reason: {s}", .{ msg });
-    log.err("    At: 0x{x}", .{ ra });
+    log.err("    Reason: {s}", .{msg});
+    log.err("    At: 0x{x}", .{ra});
 
     arch.halt();
 }