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From:   Linus Torvalds <torvalds@linux-foundation.org>
Date:   Thu, 30 Jan 2020 10:07:40 -0800
Message-ID: <CAHk-=wjOXE4cqFOdtSymYnMMayZq8Lv7qDy-6BzCs=2=8HcoBA@mail.gmail.com>
Subject: Re: 5.6-### doesn't boot
To:     =?UTF-8?Q?J=C3=B6rg_Otte?= <jrg.otte@gmail.com>,
        Ingo Molnar <mingo@kernel.org>
Cc:     Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        "the arch/x86 maintainers" <x86@kernel.org>
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On Thu, Jan 30, 2020 at 9:32 AM J=C3=B6rg Otte <jrg.otte@gmail.com> wrote:
>
> my notebook doesn't boot with current kernel. Booting stops right after
> displaying "loading initial ramdisk..". No further displays.
> Also nothing is wriiten to the logs.
>
> last known good kernel is : vmlinuz-5.5.0-00849-gb0be0eff1a5a
> first known bad kernel is : vmlinuz-5.5.0-01154-gc677124e631d

It would be lovely if you can bisect a bit. But my merges in that
range are all from Ingo:

Ingo Molnar (7):
    header cleanup
    objtool updates
    RCU updates
    EFI updates
    locking updates
    perf updates
    scheduler updates

but not having any messages at all makes it hard to guess where it would be=
.

A few bisect runs would narrow it down a fair amount. Bisecting all
the way would be even better, of course,

            Linus