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

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Date:   Sun, 30 Aug 2020 12:56:48 +0300
From:   Mike Rapoport <rppt@...ux.ibm.com>
To:     Randy Dunlap <rdunlap@...radead.org>
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

Hi Randy,

On Sat, Aug 29, 2020 at 08:40:51AM -0700, Randy Dunlap wrote:
> 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.

I've seen that, I just wanted to make sure that Andrew wouldn't pick
this one :)

I can help with taking microblaze and ia64 patches via memblock tree
once we have Acks from the arch maintainers.
 
> thanks.
> -- 
> ~Randy
> 

-- 
Sincerely yours,
Mike.