linux-kernel - Re: [PATCH V6 00/26] mm/mmap: Drop __SXXX/_

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Date:   Wed, 6 Jul 2022 14:03:05 +0530
From:   Anshuman Khandual <anshuman.khandual@....com>
To:     Arnd Bergmann <arnd@...db.de>,
        Christophe Leroy <christophe.leroy@...roup.eu>
Cc:     "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "linux-xtensa@...ux-xtensa.org" <linux-xtensa@...ux-xtensa.org>,
        "linux-ia64@...r.kernel.org" <linux-ia64@...r.kernel.org>,
        "linux-parisc@...r.kernel.org" <linux-parisc@...r.kernel.org>,
        "linux-s390@...r.kernel.org" <linux-s390@...r.kernel.org>,
        "linux-sh@...r.kernel.org" <linux-sh@...r.kernel.org>,
        "linux-hexagon@...r.kernel.org" <linux-hexagon@...r.kernel.org>,
        "x86@...nel.org" <x86@...nel.org>,
        "linux-um@...ts.infradead.org" <linux-um@...ts.infradead.org>,
        "linux-mips@...r.kernel.org" <linux-mips@...r.kernel.org>,
        "linux-csky@...r.kernel.org" <linux-csky@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "hch@...radead.org" <hch@...radead.org>,
        "linux-m68k@...ts.linux-m68k.org" <linux-m68k@...ts.linux-m68k.org>,
        "openrisc@...ts.librecores.org" <openrisc@...ts.librecores.org>,
        "linux-alpha@...r.kernel.org" <linux-alpha@...r.kernel.org>,
        "sparclinux@...r.kernel.org" <sparclinux@...r.kernel.org>,
        "linux-riscv@...ts.infradead.org" <linux-riscv@...ts.infradead.org>,
        "linux-snps-arc@...ts.infradead.org" 
        <linux-snps-arc@...ts.infradead.org>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH V6 00/26] mm/mmap: Drop __SXXX/__PXXX macros from across
 platforms



On 7/6/22 12:34, Arnd Bergmann wrote:
> On Wed, Jul 6, 2022 at 8:33 AM Christophe Leroy
> <christophe.leroy@...roup.eu> wrote:
> 
>> As far as I can see in Kconfig, CONFIG_MMU is user selectable on the
>> following architectures:
>> - ARM
>> - M68K
>> - RISCV
>> - SH
>>
>> And is disabled by default on XTENSA.
> 
> Right, the list is complete, though it's also default-enabled for
> every CPU core on xtensa, and you can only disable it for
> "custom" CPU cores.

ARM, M68K, RISCV all have got them inside wrapper or files which are
not built, without CONFIG_MMU. With build fixes for SH and XTENSA on
linux-next, I guess we are good.