From: Ingo Molnar <mingo@kernel.org>
To: Dave Young <dyoung@redhat.com>
Cc: matt.fleming@intel.com, hpa@zytor.com, akpm@linux-foundation.org,
x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] ignore ,keep for efi earlyprintk
Date: Thu, 24 Apr 2014 12:45:40 +0200 [thread overview]
Message-ID: <20140424104540.GA5834@gmail.com> (raw)
In-Reply-To: <20140424093658.GA7158@dhcp-16-198.nay.redhat.com>
* Dave Young <dyoung@redhat.com> wrote:
> earlyprint=efi,keep results a kernel hang after "Freeing unused kernel memory"
That's a bug.
>
> Actually efi earlyprintk is using __init functions such as early_ioremap etc.
> Thus efi earlyconsole can not be kept.
>
> So just ignore it and give out a warning to user.
So, bugs should be fixed, not worked around.
earlyprintk=,keep is really useful for the occasional difficult low
level bug in the printk code or similar, because earlyprintk is a
completely separate code path from printk().
Thanks,
Ingo
next prev parent reply other threads:[~2014-04-24 10:45 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-24 9:36 [PATCH] ignore ,keep for efi earlyprintk Dave Young
2014-04-24 10:45 ` Ingo Molnar [this message]
2014-04-25 1:53 ` Dave Young
2014-04-25 11:53 ` Matt Fleming
2014-04-26 7:28 ` Dave Young
2014-04-29 9:45 ` Matt Fleming
2014-04-29 10:03 ` Dave Young
2014-04-29 10:21 ` Thomas Gleixner
2014-04-30 1:12 ` Dave Young
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