On Thu, Sep 25, 2014 at 12:23:26AM +0000, Geoff Levand wrote: > Hi All, > > This series adds the core support for kexec re-boots on arm64. I have tested > with the ARM VE fast model using various kernel config options for both the > first and second stage kernels. > > To load a second stage kernel and execute a kexec re-boot on arm64 my patches to > kexec-tools [2], which have not yet been merged upstream, are needed. > > This series does not include some re-work of the spin-table CPU enable method > that is needed to support it, nor does it include some re-work of KVM to support > CPU soft reset. A kernel built with these patches will boot and run correctly, > but will fail to load a kexec kernel if running on a machine with any spin-table > enabled CPUs and will fail the kexec re-boot if the first stage kernel was built > with CONFIG_KVM=y. Work-in-progress patches to support these are in the master > branch of my linux-kexec repository [1]. > > Patches 1-4 rework the arm64 hcall mechanism to give the arm64 soft_restart() > routine the ability to switch exception levels from EL1 to EL2 for kernels that > were entered in EL2. > > Patch 5 moves proc-macros.S from arm64/mm to arm64/include/asm so that the > dcache_line_size macro it defines can be uesd by kexec's relocate kernel > routine. > > Patches 11 and 12 add the actual kexec support. > > Please consider all patches for inclusion. Any comments or suggestions on how > to improve are welcome. > > [1] https://git.linaro.org/people/geoff.levand/linux-kexec.git > [2] https://git.linaro.org/people/geoff.levand/kexec-tools.git > Hi Geoff, I tried and I get following. [root at apm-mustang-ev3-06 sbin]# ./kexec -l /root/git/sa2/vmlinux --initrd=/boot/initramfs-3.17.0-rc7+.img --append="BOOT_IMAGE=/vmlinuz-3.17.0-rc5+ root=/dev/mapper/fedora_dhcp--17--165-root ro rd.lvm.lv=fedora_dhcp-17-165/root rd.lvm.lv=fedora_dhcp-17-165/swap vconsole.font=latarcyrheb-sun16 console=tty0 console=ttyS0,115200 LANG=en_US.UTF-8 crashkernel=160M earlyprintk=ttyS0,115200" kexec version: 14.10.02.15.58-g706fbeb Modified cmdline: root=/dev/mapper/rhsfadp_apm--mustang--ev3--06-root Unable to find /proc/device-tree//chosen/linux,stdout-path, printing from purgatory is diabled get_memory_ranges_dt:756: Invalid /proc/device-tree. kexec: kexec/arch/arm64/kexec-arm64.c:625: virt_to_phys: Assertion `arm64_mem.memstart' failed. Aborted What's "Modified cmdline" ? That seems to have truncated everything I passed in. Thanks Vivek
