linux-kernel - Re: [External] Re: linux-next: Tree for Mar 15 (arch/x86/mm/init_64.c

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Message-ID: <CAMZfGtWQNhPR0N1cX1aR2R4_7acEE+0VDiHMJEkAPaXnWKhZqA@mail.gmail.com>
Date:   Tue, 16 Mar 2021 10:56:53 +0800
From:   Muchun Song <songmuchun@...edance.com>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        X86 ML <x86@...nel.org>
Subject: Re: [External] Re: linux-next: Tree for Mar 15 (arch/x86/mm/init_64.c
 :: vmemmap)

On Tue, Mar 16, 2021 at 12:05 AM Randy Dunlap <rdunlap@...radead.org> wrote:
>
> On 3/14/21 10:24 PM, Stephen Rothwell wrote:
> > Hi all,
> >
> > Warning: Some of the branches in linux-next are still based on v5.12-rc1,
> > so please be careful if you are trying to bisect a bug.
> >
> > News: if your -next included tree is based on Linus' tree tag
> > v5.12-rc1{,-dontuse} (or somewhere between v5.11 and that tag), please
> > consider rebasing it onto v5.12-rc2. Also, please check any branches
> > merged into your branch.
> >
> > Changes since 20210312:
> >
>
> on x86_64:
>
> In file included from ../include/asm-generic/bug.h:5:0,
>                  from ../arch/x86/include/asm/bug.h:93,
>                  from ../include/linux/bug.h:5,
>                  from ../include/linux/signal.h:5,
>                  from ../arch/x86/mm/init_64.c:10:
> ../arch/x86/mm/init_64.c: In function ‘remove_pmd_table’:
> ../arch/x86/mm/init_64.c:1127:8: error: implicit declaration of function ‘vmemmap_pmd_is_unused’; did you mean ‘vmemmap_pmd_populate’? [-Werror=implicit-function-declaration]
>         vmemmap_pmd_is_unused(addr, next)) {
>         ^
> ../include/linux/compiler.h:58:52: note: in definition of macro ‘__trace_if_var’
>  #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
>                                                     ^~~~
> ../arch/x86/mm/init_64.c:1126:11: note: in expansion of macro ‘if’
>     } else if (IS_ENABLED(CONFIG_SPARSEMEM_VMEMMAP) &&
>            ^~
>

I believe this compiler error is fixed by:

https://lore.kernel.org/linux-mm/20210309214050.4674-4-osalvador@suse.de/

Thanks.

>
> Full randconfig file is attached.
>
> --
> ~Randy
> Reported-by: Randy Dunlap <rdunlap@...radead.org>