* Dan Williams <dan.j.williams@xxxxxxxxx> wrote: > Hi, > > I am currently unable to boot a Yoga 900 with latest mainline, but 4.8 boots. > > The symptom is a reboot before the video console is available. > > I bisected to commit 816e76129ed5 "efi: Allow drivers to reserve boot > services forever". However, that commit is known to be broken. The > proposed fix, commit 92dc33501bfb "x86/efi: Round EFI memmap > reservations to EFI_PAGE_SIZE", also exhibits the reboot problem. > > During the bisect some of the stopping points landed on commits that > caused the boot process to hang rather than cause a reboot. The > commits that resulted in a hang are marked "git bisect skip" in this > log: https://gist.github.com/djbw/1b501daa98192a42ae848f03bb59c30e > > I'll try treating those hangs as bad bisect results and re-run the > full bisect tomorrow. In the meantime I wonder if the bisect log > implicates a better regression candidate? You could also try reverts of the suspicious commits, and then, if the reverted kernel works fine, create a more linear history by cherry-picking them in the right order - and then be able to pinpoint the bad commit with a higher confidence. Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
