linux-kernel - Re: [PATCH v2] x86, calgary: use 8M TCE table size by default

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Message-ID: <532B10F5.9010709@zytor.com>
Date:	Thu, 20 Mar 2014 09:01:57 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Vivek Goyal <vgoyal@...hat.com>
CC:	Muli Ben-Yehuda <muli@...technion.ac.il>,
	"Jon D. Mason" <jdmason@...zu.us>, Baoquan He <bhe@...hat.com>,
	kexec@...ts.infradead.org, x86@...nel.org,
	linux-kernel@...r.kernel.org, WANG Chao <chaowang@...hat.com>
Subject: Re: [PATCH v2] x86, calgary: use 8M TCE table size by default

On 03/20/2014 08:54 AM, Vivek Goyal wrote:
> Hi hpa,
> 
> I am wondering how to make progress on calgary issue now. We do want to
> cleanup kexec-tools code and move to passing memory ranges in bootparams.
> 
> I see two choices here.
> 
> - Take this patch in so that new kernel code will work with modified
>   kexec-tools without any user intervention. (Both first and second kernel
>   need to be new). 
> 
> - Don't take this patch in and calgary will be broken with new
>   kexec-tools. And that will always require manual user intervention
>   from user to force passing memmap on command line.
> 
> I kind of prefer the first option so that even if there are some calgary
> machines out there, they will work automatically with new kernel and
> will require manual intervention only for old kernels and new kexec-tool
> cobination.
> 
> But I can live with second option too if that's everybody agrees to and
> hopefully we don't get lots of reports of breaking kdump with kexec-tools
> upgrade.
> 

The patch seems simple enough and doesn't require any new command line
hacks.  It has been widely reviewed and acked, so I'll pick it up.

	-hpa


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