linux-kernel - Re: Bug: Microblaze stopped booting after 0fa1c579349fdd90173381712ad78aa99c09d38b

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Message-ID: <CAL_JsqLenrLARsjHvkkL3ByuXARPShz-VAEBDE2FukJc=vD+Sg@mail.gmail.com>
Date:   Fri, 9 Mar 2018 13:05:11 -0600
From:   Rob Herring <robh@...nel.org>
To:     "Alvaro G. M." <alvaro.gamez@...ent.com>,
        Michal Simek <monstr@...str.eu>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Bug: Microblaze stopped booting after 0fa1c579349fdd90173381712ad78aa99c09d38b

On Fri, Mar 9, 2018 at 6:51 AM, Alvaro G. M. <alvaro.gamez@...ent.com> wrote:
> Hi,
>
> I've found via git bisect that 0fa1c579349fdd90173381712ad78aa99c09d38b
> makes microblaze unbootable.
>
> I'm sorry I can't provide any console output, as nothing appears at all,
> even when setting earlyprintk (or at least I wasn't able to get anything
> back!).

Ah, looks like microblaze doesn't set CONFIG_NO_BOOTMEM and so
memblock_virt_alloc() doesn't work for CONFIG_HAVE_MEMBLOCK &&
!CONFIG_NO_BOOTMEM. AFAICT, microblaze doesn't really need bootmem and
it can be removed, but I'm still investigating. Can you try out this
branch[1].

Rob

[1] git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git
microblaze-fixes