linux-kernel - Re: [PATCH v3 2/4] hugetlbfs: move hugepagesz= parsing to arch independent code

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Date:   Mon, 27 Apr 2020 13:31:06 -0700
From:   Mike Kravetz <mike.kravetz@...cle.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Sandipan Das <sandipan.osd@...il.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linuxppc-dev@...ts.ozlabs.org, linux-riscv@...ts.infradead.org,
        linux-s390@...r.kernel.org, sparclinux@...r.kernel.org,
        linux-doc@...r.kernel.org,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        "David S.Miller" <davem@...emloft.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Jonathan Corbet <corbet@....net>,
        Longpeng <longpeng2@...wei.com>,
        Christophe Leroy <christophe.leroy@....fr>,
        Randy Dunlap <rdunlap@...radead.org>,
        Mina Almasry <almasrymina@...gle.com>,
        Peter Xu <peterx@...hat.com>,
        Nitesh Narayan Lal <nitesh@...hat.com>
Subject: Re: [PATCH v3 2/4] hugetlbfs: move hugepagesz= parsing to arch
 independent code

On 4/27/20 1:18 PM, Andrew Morton wrote:
> On Mon, 27 Apr 2020 12:09:47 -0700 Mike Kravetz <mike.kravetz@...cle.com> wrote:
> 
>> Previously, a check for hugepages_supported was added before processing
>> hugetlb command line parameters.  On some architectures such as powerpc,
>> hugepages_supported() is not set to true until after command line
>> processing.  Therefore, no hugetlb command line parameters would be
>> accepted.
>>
>> Remove the additional checks for hugepages_supported.  In hugetlb_init,
>> print a warning if !hugepages_supported and command line parameters were
>> specified.
> 
> This applies to [4/4] instead of fixing [2/4].  I guess you'll
> straighten that out in v4?

Yes.

> btw, was
> http://lkml.kernel.org/r/CADYN=9Koefrq9H1Y82Q8nMNbeyN4tzhEfvDu5u=sVFjFZCYorA@mail.gmail.com
> addressed?

Yes, you pulled a patch into your tree to address this.
hugetlbfs-remove-hugetlb_add_hstate-warning-for-existing-hstate-fix.patch

I'll send out a v4 with both these issues addressed.  Would like to wait
until receiving confirmation from someone who can test on powerpc.
-- 
Mike Kravetz