[PATCH v8 RESEND 0/4] Support kdump for AMD secure memory encryption(SME)
bp at suse.de
Tue Oct 2 04:40:12 PDT 2018
On Sun, Sep 30, 2018 at 11:10:29AM +0800, Lianbo Jiang wrote:
> When SME is enabled on AMD machine, it also needs to support kdump. Because
Ok, I've cleaned them up heavily and pushed them here:
https://git.kernel.org/pub/scm/linux/kernel/git/bp/bp.git, branch rc6+0-sme-kdump
However, testing on my zen box doesn't go as planned. And this is even before
I load the kdump kernel with kexec-tools from the git-repo + the patch you
# ~/bpetkov/bin/sbin/kexec -p /boot/vmlinuz-4.19.0-rc6+ --initrd /boot/initrd-4.19.0-rc6+ --command-line="root=/dev/mapper/ubuntu--010236012132--vg-leap15 splash=silent showopts console=ttyS5,115200 console=tty0 debug ignore_loglevel log_buf_len=16M 1 irqpoll maxcpus=1 reset_devices vga=normal"
verify that it has been loaded:
# grep . /sys/kernel/kexec_*
and then trigger the panic:
# echo c > /proc/sysrq-trigger
and I see the panic happening in the serial console but then nothing.
The box resets instead.
So something's still broken.
Trying the kexec -l/kexec -e game works - the second kernel gets kexeced
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More information about the kexec