linux-kernel - Re: [PATCH v4 12/16] parisc: mm: Convert to GENERIC

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Message-ID: <Y/SudyUShbcJXqbY@MiWiFi-R3L-srv>
Date:   Tue, 21 Feb 2023 19:43:51 +0800
From:   Baoquan He <bhe@...hat.com>
To:     Christophe Leroy <christophe.leroy@...roup.eu>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Matthew Wilcox <willy@...radead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Christoph Hellwig <hch@...radead.org>,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        Niklas Schnelle <schnelle@...ux.ibm.com>,
        David Laight <David.Laight@...lab.com>,
        Stafford Horne <shorne@...il.com>,
        "James E . J . Bottomley" <James.Bottomley@...senpartnership.com>,
        Helge Deller <deller@....de>,
        "linux-parisc@...r.kernel.org" <linux-parisc@...r.kernel.org>
Subject: Re: [PATCH v4 12/16] parisc: mm: Convert to GENERIC_IOREMAP

On 02/17/23 at 02:35pm, Christophe Leroy wrote:
...... 
> > Not so many:
> > 
> > $ git grep ARCH_HAS_IOREMAP_WC  | grep define
> > arch/loongarch/include/asm/io.h:#define ARCH_HAS_IOREMAP_WC
> > arch/mips/include/asm/io.h:#define ARCH_HAS_IOREMAP_WC
> > arch/powerpc/include/asm/io.h:#define ARCH_HAS_IOREMAP_WC
> > arch/x86/include/asm/io.h:#define ARCH_HAS_IOREMAP_WC
> > 
> > And also make sure they define ioremap_wc :
> > 
> > $ git grep "define ioremap_wc" `git grep -l "define ARCH_HAS_IOREMAP_WC"`
> > arch/loongarch/include/asm/io.h:#define ioremap_wc(offset, size)        \
> > arch/mips/include/asm/io.h:#define ioremap_wc(offset, size) 
> >                         \
> > arch/powerpc/include/asm/io.h:#define ioremap_wc ioremap_wc
> > arch/x86/include/asm/io.h:#define ioremap_wc ioremap_wc
> > 
> 
> 
> By the way there are so few, you can make all at once:

OK, I will try to pack this into one preparation patch. Thanks.

> 
> $ git grep ARCH_HAS_IOREMAP_ | grep define
> arch/loongarch/include/asm/io.h:#define ARCH_HAS_IOREMAP_WC
> arch/m68k/include/asm/kmap.h:#define ARCH_HAS_IOREMAP_WT
> arch/mips/include/asm/io.h:#define ARCH_HAS_IOREMAP_WC
> arch/powerpc/include/asm/io.h:#define ARCH_HAS_IOREMAP_WC
> arch/powerpc/include/asm/io.h:#define ARCH_HAS_IOREMAP_WT
> arch/x86/include/asm/io.h:#define ARCH_HAS_IOREMAP_WC
> arch/x86/include/asm/io.h:#define ARCH_HAS_IOREMAP_WT
> 
> Christophe