linux-kernel - Re: [ALTERNATE PATCH] memblock: fix min_low_pfn/max_low

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Message-ID: <a0665bb7-3389-1178-0a79-2155fb88255d@infradead.org>
Date:   Sat, 29 Aug 2020 08:40:51 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Mike Rapoport <rppt@...ux.ibm.com>
Cc:     linux-kernel@...r.kernel.org, kernel test robot <lkp@...el.com>,
        David Rientjes <rientjes@...gle.com>, linux-mm@...ck.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Michal Simek <monstr@...str.eu>,
        Michal Simek <michal.simek@...inx.com>,
        Tony Luck <tony.luck@...el.com>,
        Fenghua Yu <fenghua.yu@...el.com>, linux-ia64@...r.kernel.org
Subject: Re: [ALTERNATE PATCH] memblock: fix min_low_pfn/max_low_pfn build
 errors

On 8/29/20 6:04 AM, Mike Rapoport wrote:
> On Fri, Aug 28, 2020 at 05:01:39PM -0700, Randy Dunlap wrote:
>> Export min_low_pfn & max_low_pfn in mm/memblock.c to fix build errors
>> on arch/microblaze/ and arch/ia64/: (e.g.)
> 
> Please don't. This would give driver developers a wrong impression that
> these variables can be used to query memory boundaries, but this is not
> the case, at least not on all architectures.
> 
> I would prefer fixing it up locally for microblaze and ia64.

I did that.
and that's why this is labeled as an ALTERNATE PATCH.


thanks.
-- 
~Randy