Disable early kernel printing to console

ports/kernel/.checksum

@@ -1,2 +1,2 @@
 9c3731d405994f9cd3a1bb72e83140735831b19c7cec18e0d7a8f3046fa034e7  linux-5.18.5.tar.xz
-de767c94d9eeb07e4c15b3f76ace73687cfd917f591921bbc48321d467fd7383  KConfig
+d4fd395a26f7f2267cc9f832638e2d2e14d6291c6259b94f021c21597cadf525  KConfig

ports/kernel/KConfig

@@ -4939,10 +4939,10 @@ CONFIG_STRICT_DEVMEM=y
 # x86 Debugging
 #
 CONFIG_TRACE_IRQFLAGS_NMI_SUPPORT=y
-CONFIG_EARLY_PRINTK_USB=y
-CONFIG_X86_VERBOSE_BOOTUP=y
-CONFIG_EARLY_PRINTK=y
-CONFIG_EARLY_PRINTK_DBGP=y
+CONFIG_EARLY_PRINTK_USB=n
+CONFIG_X86_VERBOSE_BOOTUP=n
+CONFIG_EARLY_PRINTK=n
+CONFIG_EARLY_PRINTK_DBGP=n
 # CONFIG_EARLY_PRINTK_USB_XDBC is not set
 # CONFIG_EFI_PGT_DUMP is not set
 # CONFIG_DEBUG_TLBFLUSH is not set
@@ -5016,4 +5016,4 @@ CONFIG_RUNTIME_TESTING_MENU=y
 CONFIG_ARCH_USE_MEMTEST=y
 # CONFIG_MEMTEST is not set
 # end of Kernel Testing and Coverage
-# end of Kernel hacking
+# end of Kernel hacking

test.sh

@@ -26,7 +26,7 @@ if [ -z "$DISK" ]; then
     DISK="disk.img"
   fi
 fi
-[ -n "$DISK" ] && QEMU_OPTS="$QEMU_OPTS -drive file=$DISK,index=2,media=disk,if=virtio,cache=writethrough"
+[ -n "$DISK" ] && QEMU_OPTS="$QEMU_OPTS -drive file=$DISK,index=2,media=disk,if=virtio,cache=writethrough,format=qcow2"
 
 QEMU_OPTS="$QEMU_OPTS
 -m 1024