Re: [Xen-devel] Problem booting Debian buster on arndale

From: Julien Grall <julien@xen.org>
To: Ian Jackson <ian.jackson@citrix.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>,
	"xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
Subject: Re: [Xen-devel] Problem booting Debian buster on arndale
Date: Mon, 9 Dec 2019 11:45:24 +0000	[thread overview]
Message-ID: <951cb333-2a80-598b-f05e-853b5422711b@xen.org> (raw)
In-Reply-To: <24046.12935.596930.542875@mariner.uk.xensource.com>

Hi,

On 09/12/2019 11:39, Ian Jackson wrote:
> Julien Grall writes ("Re: Problem booting Debian buster on arndale"):
>> Looking at the command line for Linux, we don't pass clk_ignore_unused.
>> Without it, the Linux may disable the clock of the UART if it wasn't
>> shared with another device. This would explain the sudden loss of the
>> console.
>>
>> The following line in Osstest/Debian.pm would need to be updated:
>>
>>        push @xenkopt, "clk_ignore_unused"
>>               if $ho->{Suite} =~ m/wheezy|jessie|stretch/;
> 
> Well spotted.  I will try updating this.  Thanks.
> 
> (Is there any possibility that this bug will be fixed at some point?)

We had the same discussion a few months ago for Stretch :).

Someone attempted it to fix it a few years ago but this never reached 
Linux upstream.

 From my perspective, this is a low hanging-fruit as there are more 
concerning bugs that can't be workaround. But the problem is documented, 
so someone could easily pick it up if he/she wanted.

Cheers,

-- 
Julien Grall

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