On Thu, Oct 20, 2016 at 5:29 AM, Matt Fleming <m...@codeblueprint.co.uk> wrote: > On Wed, 19 Oct, at 09:04:29PM, Dan Williams 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? > > Could you mail the dmesg output when booting a known working kernel > with efi=debug ?
Here it is: https://gist.github.com/djbw/cae05e721b159d5ad7b146d7a93f5fa2
