On Sat, Jun 25, 2022 at 10:49:49AM +0800, Hui Li wrote: > Under loongson platform, use command: > kexec -l vmlinux... --append="root=UUID=28e1..." --initrd=... > kexec -e > quick restart failed like this: > > ******************************************************************** > [ 3.420791] VFS: Cannot open root device "UUID=6462a8a4-02fb-49..." > [ 3.431262] Please append a correct "root=" boot option; ... > ... > ... > ... > [ 3.543175] 0801 4194304 sda1 554e69cc-01 > [ 3.543175] > [ 3.549494] 0802 62914560 sda2 554e69cc-02 > [ 3.549495] > [ 3.555818] 0803 8388608 sda3 554e69cc-03 > [ 3.555819] > [ 3.562139] 0804 174553229 sda4 554e69cc-04 > [ 3.562139] > [ 3.568463] 0b00 1048575 sr0 > [ 3.568464] driver: sr > [ 3.574524] Kernel panic - not syncing: VFS: Unable to mount root fs... > [ 3.582750] ---[ end Kernel panic - not syncing: VFS:... > ******************************************************************* > > The kernel cannot parse the UUID, the UUID is parsed in the initrd. > For compatibility with previous platforms, loongson platform obtain > initrd parameter through cmdline in kernel, the kernel supports use > cmdline to parse initrd. But under the mips architecture, kexec-tools > pass the initrd through DTB. > > Made the following modifications: > > (1) in kexec/arch/mips/kexec-elf-mips.c > Add patch_initrd_info(), at runtime to distinguish different cpu, > only for loongson cpu, add initrd parameter to cmdline. > > (2) in kexec/arch/mips/crashdump-mips.c > Because loongson uses a different page_offset, it should be modified > to ensure that crashdump functionality is correct and reliable. > > (3) in kexec/arch/mips/crashdump-mips.h > Added platform-specific page_offset macro definition. > > Signed-off-by: Hui Li <lihui@xxxxxxxxxxx> Thanks for addressing all my review comments. I have applied this patch for inclusion in the next release of kexec-tools. _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
