From: Baoquan He <bhe@redhat.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
akpm@linux-foundation.org, christophe.leroy@csgroup.eu,
hch@infradead.org, agordeev@linux.ibm.com,
wangkefeng.wang@huawei.com, schnelle@linux.ibm.com,
David.Laight@aculab.com, shorne@gmail.com, arnd@arndb.de,
"James E.J. Bottomley" <James.Bottomley@hansenpartnership.com>,
Helge Deller <deller@gmx.de>,
linux-parisc@vger.kernel.org
Subject: Re: [PATCH v4 12/16] parisc: mm: Convert to GENERIC_IOREMAP
Date: Thu, 16 Feb 2023 23:02:09 +0800 [thread overview]
Message-ID: <Y+5Fcc6wsbr0qmoN@MiWiFi-R3L-srv> (raw)
In-Reply-To: <Y+40p3oegc2Of9w2@casper.infradead.org>
On 02/16/23 at 01:50pm, Matthew Wilcox wrote:
> On Thu, Feb 16, 2023 at 08:34:15PM +0800, Baoquan He wrote:
> > Meanwhile, add macro ARCH_HAS_IOREMAP_WC since the added ioremap_wc()
> > will conflict with the one in include/asm-generic/iomap.h, then an
> > compiling error is seen:
>
Thanks for reviewing.
> Huh? ARCH_HAS_IOREMAP_WC comes up nowhere else in this patchset, and
> the current definition of ioremap_wc() is guarded by an ifndef ioremap_wc
Because another patch of powerpc has got ARCH_HAS_IOREMAP_WC in the
existed code.
>
> > +#define ioremap_wc(addr, size) \
> > + ioremap_prot((addr), (size), _PAGE_IOREMAP)
>
> This should be enough all by itself.
It's not if including asm-generic/iomap.h. The ARCH_HAS_IOREMAP_xx is to
avoid redefinition there.
include/asm-generic/iomap.h:
----
#ifndef ARCH_HAS_IOREMAP_WC
#define ioremap_wc ioremap
#endif
>
next prev parent reply other threads:[~2023-02-16 15:03 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-16 12:34 [PATCH v4 00/16] mm: ioremap: Convert architectures to take GENERIC_IOREMAP way Baoquan He
2023-02-16 12:34 ` [PATCH v4 01/16] hexagon: mm: Convert to GENERIC_IOREMAP Baoquan He
2023-02-16 12:53 ` Arnd Bergmann
2023-02-16 14:47 ` Baoquan He
2023-02-16 14:51 ` Arnd Bergmann
2023-02-17 12:11 ` Baoquan He
2023-02-16 12:34 ` [PATCH v4 02/16] openrisc: mm: remove unneeded early ioremap code Baoquan He
2023-02-16 12:34 ` [PATCH v4 03/16] mm/ioremap: Define generic_ioremap_prot() and generic_iounmap() Baoquan He
2023-02-16 12:34 ` [PATCH v4 04/16] mm: ioremap: allow ARCH to have its own ioremap method definition Baoquan He
2023-02-16 12:41 ` Arnd Bergmann
2023-02-16 12:34 ` [PATCH v4 05/16] mm/ioremap: add slab availability checking in ioremap_prot Baoquan He
2023-02-16 12:34 ` [PATCH v4 06/16] arc: mm: Convert to GENERIC_IOREMAP Baoquan He
2023-02-16 12:34 ` Baoquan He
2023-02-16 12:34 ` [PATCH v4 07/16] ia64: " Baoquan He
2023-02-16 12:34 ` Baoquan He
2023-02-16 12:34 ` [PATCH v4 08/16] openrisc: " Baoquan He
2023-02-16 12:34 ` [PATCH v4 09/16] s390: " Baoquan He
2023-02-16 16:21 ` Niklas Schnelle
2023-02-21 11:48 ` Baoquan He
2023-02-21 12:26 ` Niklas Schnelle
2023-02-21 12:52 ` Baoquan He
2023-02-16 12:34 ` [PATCH v4 10/16] sh: " Baoquan He
2023-02-16 12:34 ` [PATCH v4 11/16] xtensa: " Baoquan He
2023-02-16 12:34 ` [PATCH v4 12/16] parisc: " Baoquan He
2023-02-16 13:50 ` Matthew Wilcox
2023-02-16 15:02 ` Baoquan He [this message]
2023-02-16 15:18 ` Arnd Bergmann
2023-02-17 13:31 ` Baoquan He
2023-02-17 13:46 ` Christophe Leroy
2023-02-17 14:21 ` Baoquan He
2023-02-17 14:33 ` Christophe Leroy
2023-02-17 14:35 ` Christophe Leroy
2023-02-21 11:43 ` Baoquan He
2023-02-22 8:35 ` Baoquan He
2023-02-16 12:34 ` [PATCH v4 13/16] mm/ioremap: Consider IOREMAP space in generic ioremap Baoquan He
2023-02-16 12:34 ` [PATCH v4 14/16] powerpc: mm: Convert to GENERIC_IOREMAP Baoquan He
2023-02-16 12:34 ` Baoquan He
2023-02-16 12:34 ` [PATCH v4 15/16] arm64 : mm: add wrapper function ioremap_prot() Baoquan He
2023-02-16 12:34 ` Baoquan He
2023-02-16 12:34 ` [PATCH v4 16/16] mm: ioremap: remove unneeded ioremap_allowed and iounmap_allowed Baoquan He
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