> By the way, could you provide detailed steps about how to test this > patchset so that people interested can give it a shot?
Sure. 0. Build and run your kernel with my patches. 1. You're gonna need a UKI to kexec. I personally use sbctl or ukify to create them. sbctl command example (assumes you have the cmdline you want saved in a file called cmdline): sudo sbctl bundle -k /boot/vmlinuz-6.5.2 -f /boot/initrd.img-6.5.2 -c ./cmdline -s ./uki.efi ukify command example: sudo python3 ukify.py build --linux=/boot/vmlinuz-6.5.2 --initrd=/boot/initrd.img-6.5.2 --cmdline <cmdline as string or a filename> 2. If you are running in lockdown mode you'll have to sign the UKI. You can use sbctl, pesign, or sbsign for example. 3. Compile kexec-test (see links below). Simple "gcc main.c -o kexec-test" should work 4. Do the kexec load: ./kexec-text <path to uki> (this is equivalent to "kexec -a -l <path to UKI>", however that currently complains about not recognizing the format) 5. At this point it's useful to check if the loading succeeded with: "cat /sys/kernel/kexec_loaded" (should return "1") 6. Do a kexec reboot. If you are running systemd, the best way is with: "systemctl kexec". Otherwise you can try "kexec -e", however this will not shut all your services down If anyone has problems please feel free to ask. Links: sbctl: https://github.com/Foxboron/sbctl ukify: https://github.com/systemd/systemd/tree/main/src/ukify kexec-test: https://github.com/Cydox/kexec-test/ _______________________________________________ kexec mailing list [email protected] http://lists.infradead.org/mailman/listinfo/kexec
