linux-kernel - Re: linux-next: Tree for May 18 (x86/mm/pgtable.c)

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Message-ID: <fbed24e4-3f01-3b3c-8d23-68e104575070@infradead.org>
Date:   Mon, 18 May 2020 09:41:29 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        X86 ML <x86@...nel.org>, Ingo Molnar <mingo@...hat.com>,
        Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>
Subject: Re: linux-next: Tree for May 18 (x86/mm/pgtable.c)

On 5/18/20 3:57 AM, Stephen Rothwell wrote:
> Hi all,
> 
> Changes since 20200515:
> 

Hi,
I don't know if this is a 'tip' thing or a gcc version thing
or if it's only on i386 + certain configs, but I only see it on
i386 builds from today's linux-next or mmotm of 20200515.


../arch/x86/mm/pgtable.c: In function 'pgd_alloc':
../arch/x86/mm/pgtable.c:427:2: warning: ISO C90 forbids variable length array 'u_pmds' [-Wvla]
  pmd_t *u_pmds[MAX_PREALLOCATED_USER_PMDS];
  ^~~~~
../arch/x86/mm/pgtable.c:428:2: warning: ISO C90 forbids variable length array 'pmds' [-Wvla]
  pmd_t *pmds[MAX_PREALLOCATED_PMDS];
  ^~~~~



The randconfig file for these warnings is attached.


-- 
~Randy
Reported-by: Randy Dunlap <rdunlap@...radead.org>

View attachment "config-r2731" of type "text/plain" (97251 bytes)