Hi Nick, On Tue, Oct 5, 2021 at 4:07 PM Alexandre Ghiti <alexandre.ghiti@xxxxxxxxxxxxx> wrote: > > On Tue, Oct 5, 2021 at 2:15 PM Nick Kossifidis <mick@xxxxxxxxxxxx> wrote: > > > > Hello all, > > > > I've uploaded my kexec-tools patches for riscv on github for > > testing/review before sending them upstream. > > https://github.com/riscv-collab/kexec-tools/tree/riscv > > > > Both kexec and kdump were tested on latest rv64 qemu, using for-next > > branch with this patch applied: > > https://patchwork.kernel.org/project/linux-riscv/patch/20211002122026.1451269-1-mick@xxxxxxxxxxxx/ > > > > I'll test that asap and review your patch too. > > Thanks for your time Nick! > > Alex > So I followed the instructions here: https://documentation.suse.com/fr-fr/sles/12-SP3/html/SLES-all/cha-tuning-kexec.html#cha-tuning-kexec-basic-usage, below the output on an Unmatched board using a vmlinux stored on a sd card: ubuntu@ubuntu:~$ sudo sbin/kexec -l vmlinux --append="$(cat /proc/cmdline)" --initrd=/boot/initrd.img Warning: No cmdline provided, using append string as cmdline Warning: No dtb provided, using /sys/firmware/fdt [ 1813.472671] INFO: task kworker/1:0:988 blocked for more than 120 seconds. [ 1813.478751] Not tainted 5.15.0-rc1+ #15 [ 1813.483110] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Could not find a free area of memory of 0x3000 bytes... locate_hole failed I used the Ubuntu kernel, so this is pretty large: -rwxrwxr-x 1 ubuntu ubuntu 277M Oct 5 15:47 vmlinux -rw-r--r-- 1 root root 98M Sep 21 03:25 /boot/initrd.img Then if I don't load the initrd (I sometimes have the same warning as above) I can at least kexec the new kernel but it fails to boot: ubuntu@ubuntu:~$ sudo ./sbin/kexec -e Warning: No cmdline or append string provided Warning: No dtb provided, using /sys/firmware/fdt [...] [ 0.000000] SBI v0.2 HSM extension detected [ 0.000000] CPU with hartid=0 is not available [ 0.000000] ------------[ cut here ]------------ [ 0.000000] kernel BUG at arch/riscv/kernel/smpboot.c:107! [ 0.000000] Kernel BUG [#1] [ 0.000000] Modules linked in: [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 5.15.0-rc1+ #15 [ 0.000000] Hardware name: SiFive HiFive Unmatched A00 (DT) [ 0.000000] epc : setup_smp+0xcc/0x142 [ 0.000000] ra : setup_smp+0xc4/0x142 [ 0.000000] epc : ffffffff80a04080 ra : ffffffff80a04078 sp : ffffffff81803ec0 [ 0.000000] gp : ffffffff81a23220 tp : ffffffff81810500 t0 : ffffffff81a3551f [ 0.000000] t1 : ffffffffffffffff t2 : 0000000000000000 s0 : ffffffff81803f00 [ 0.000000] s1 : 0000000000000000 a0 : 0000000000000000 a1 : 0000000000000000 [ 0.000000] a2 : 0000000000000000 a3 : 0000000000000001 a4 : 0000000000000000 [ 0.000000] a5 : ffffffff80c64500 a6 : 0000000000000004 a7 : 000000000000ff00 [ 0.000000] s2 : 0000000000000005 s3 : 0000000000000000 s4 : ffffffff8118f9a8 [ 0.000000] s5 : 0000000000000007 s6 : ffffffff80c0b790 s7 : 0000000080000200 [ 0.000000] s8 : 0000000000000fff s9 : 0000000081000200 s10: 0000000000000018 [ 0.000000] s11: 000000000000000b t3 : 0000000000ff0000 t4 : ffffffffffffffff [ 0.000000] t5 : ffffffff80c0b7a0 t6 : ffffffff81803bd8 [ 0.000000] status: 0000000200000100 badaddr: 0000000000000000 cause: 0000000000000003 [ 0.000000] [<ffffffff80a04080>] setup_smp+0xcc/0x142 [ 0.000000] [<ffffffff80a03d88>] setup_arch+0x56a/0x590 [ 0.000000] [<ffffffff80a00aa2>] start_kernel+0xaa/0xa5c [ 0.000000] random: get_random_bytes called from oops_exit+0x44/0x70 with crng_init=0 [ 0.000000] ---[ end trace 0000000000000000 ]--- [ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task! [ 0.000000] ---[ end Kernel panic - not syncing: Attempted to kill the idle task! ]--- This reliably fails here. > > Regards, > > Nick > > > > _______________________________________________ > > linux-riscv mailing list > > linux-riscv@xxxxxxxxxxxxxxxxxxx > > http://lists.infradead.org/mailman/listinfo/linux-riscv _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
