QEMU fails to reboot with current kernels, instead it hangs eating CPU: # exit reboot: Restarting system Reboot failed -- System halted I bisected it to "MIPS: Malta: Use syscon-reboot driver to reboot" commit 10b6ea0959de back in September. To reproduce, build a kernel with: cat > mini.conf << EOF # CONFIG_EMBEDDED is not set CONFIG_EARLY_PRINTK=y CONFIG_BLK_DEV_INITRD=y CONFIG_RD_GZIP=y CONFIG_BINFMT_ELF=y CONFIG_BINFMT_SCRIPT=y CONFIG_MISC_FILESYSTEMS=y CONFIG_DEVTMPFS=y CONFIG_MIPS_MALTA=y CONFIG_CPU_MIPS32_R2=y CONFIG_SERIAL_8250=y CONFIG_SERIAL_8250_CONSOLE=y CONFIG_PM=y CONFIG_PCNET32=y CONFIG_BLK_DEV_PIIX=y EOF make ARCH=mips allnoconfig KCONFIG_ALLCONFIG=mini.conf make ARCH=mips CROSS_COMPILE=blah- And then boot qemu with a simple initramfs: qemu-system-mips -M malta -nographic -no-reboot -kernel vmlinux \ -append "console=ttyS0 panic=1" -initrd root.cpio.gz And then try to shut it down. Before that commit it did, after it doesn't. (I rebuilt qemu from git this morning and that didn't help, same behavior as last year's build. New kernel doesn't know how to tell it to shut down, old one did.) Rob
