Hello Yang Shunyong, On Fri, Nov 10, 2017 at 3:52 PM, Yang Shunyong <yang.shunyong at gmail.com> wrote: > Hi, All, > I am trying to enable kdump on ARM64, based on 4.14 kernel. I met > EFI reserved memory(eg. ACPI tables) being released issue, in function > arm64_memblock_init() . It will cause the memory attribute incorrect > and kernel crash in ACPI parsing. > From the discussions about kdump on ARM64 I searched via Google, > it needs to set some memory configurations, like "mem=". I have set > the "mem=64M", but it still failed. > Could you please share me some sample command line settings for > kdump ARM64? Or how to set options to avoid the crash? > > following is my command line from "kdump-config show", I have reserved > 256M for crash in first kernel "crashkernel=256M at 0x0efe00000", > > /sbin/kexec -p --command-line="BOOT_IMAGE=/vmlinuz-4.14.0-rc2-hxtysy > root=/dev/mapper/ubuntu--vg-root ro rqpoll mem=256M nr_cpus=1 nousb > systemd.unit=kdump-tools.service ns_log_on=on" > --initrd=/var/lib/kdump/initrd.img /var/lib/kdump/vmlinuz > Yes, I am aware of this issue and debugging the same (see https://bugzilla.redhat.com/show_bug.cgi?id=1505314 for details). I plan to post a patch fixing this issue early next week. I will keep you posted and also share an early version of the patch with you so that you can check if the same works for you. Regards, Bhupesh
