feat(mm): initial mm work

build/linker-scripts/x86_64.lds

@@ -33,17 +33,25 @@ SECTIONS
     /* Move to the next memory page for .text */
     . = ALIGN(CONSTANT(MAXPAGESIZE));
 
+    text_start_addr = .;
+
     .text : {
         *(.text .text.*)
     } :text
 
+
     /* Move to the next memory page for .rodata */
     . = ALIGN(CONSTANT(MAXPAGESIZE));
 
+    text_end_addr = .;
+
+    rodata_start_addr = .;
+
     .rodata : {
         *(.rodata .rodata.*)
     } :rodata
 
+
     .percpu_init_array : {
         __init_array_percpu_start = .;
         KEEP(*(.percpu_init_array))
@@ -56,9 +64,12 @@ SECTIONS
         *(.note.gnu.build-id)
     } :rodata
 
+
     /* Move to the next memory page for .data */
     . = ALIGN(CONSTANT(MAXPAGESIZE));
+    rodata_end_addr = .;
 
+    data_start_addr = .;
     .data : {
         *(.data .data.*)
     } :data
@@ -69,6 +80,7 @@ SECTIONS
         __percpu_end = .;
     } :data
 
+
     /* NOTE: .bss needs to be the last thing mapped to :data, otherwise lots of */
     /* unnecessary zeros will be written to the binary. */
     /* If you need, for example, .init_array and .fini_array, those should be placed */
@@ -78,10 +90,14 @@ SECTIONS
         *(COMMON)
     } :data
 
+
+    . = ALIGN(CONSTANT(MAXPAGESIZE));
+
+    data_end_addr = .;
+
     /* Discard .note.* and .eh_frame* since they may cause issues on some hosts. */
     /DISCARD/ : {
         *(.eh_frame*)
         *(.note .note.*)
     }
 }
-

build/run.zig

@@ -52,7 +52,7 @@ pub fn addRun(b: *std.Build, kernel: *std.Build.Step.Compile, plat: config.Platf
 
         switch (plat.arch) {
             .x86_64 => {
-                qemu.addArgs(&.{ "-serial", "stdio" });
+                qemu.addArgs(&.{ "-serial", "stdio", "-m", "1G", "-smp", "4" });
 
                 if (!debug) qemu.addArgs(&.{ "-enable-kvm", "-cpu", "host" });
             },