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Wed, 01 Mar 2023 08:37:21 -0500 X-MC-Unique: BaLlk-2uPTKbvDKFCJXn9g-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id A3D923C0E442; Wed, 1 Mar 2023 13:37:20 +0000 (UTC) Received: from localhost (ovpn-13-180.pek2.redhat.com [10.72.13.180]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 679C51121315; Wed, 1 Mar 2023 13:37:19 +0000 (UTC) Date: Wed, 1 Mar 2023 21:37:16 +0800 From: Baoquan He To: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org, linux-mm@kvack.org, arnd@arndb.de, geert@linux-m68k.org, hch@infradead.org, mcgrof@kernel.org Subject: Re: [PATCH v2 0/2] arch/*/io.h: remove ioremap_uc in some architectures Message-ID: References: <20230301102208.148490-1-bhe@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230301102208.148490-1-bhe@redhat.com> X-Scanned-By: MIMEDefang 3.1 on 10.11.54.3 X-Rspam-User: X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 2DA7F80013 X-Stat-Signature: 6sw4db6mbguu6hb9q9rxiy9xn8kjxixe X-HE-Tag: 1677677842-654602 X-HE-Meta: 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 NeS0XuMw VfbF9WD1IMiX+Iq6e/ETApK4zre1Dpob6WoRBlvpUNf+hs9/mb4eaXBj7VYNePm6lw+ueVhmVeiL4J2jXlQ/vE0p1ZCV0+WqqdHHrHcyFOV62PH6Ecz7OqwhFidMXUXL+R5tqjClAq2OLFsa9DbexeKHiJHWZmdDuEdKv3bXJa2nu1nBqG3E7hd5cWN88X1OH4jJeqlfgusCOT+azlvnpzvL93jJxZVc59g6B4Wq6IRojIAu+l5E8YPRJmo08c7kWjIlKyN3pqXuBwV78EKDwJHIQZK59A4zywgqhQq5CAk4UiFsKQHk0VZkc03xWvpWa3eFIWhjJVr4+wXJfyhj0dy09bjD1phnSw5OC7Y3o4Fq6+8V3lMARXuXMiDQORhyXduyenxVaBLgvel4= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 03/01/23 at 06:22pm, Baoquan He wrote: > This patchset tries to remove ioremap_uc() in the current architectures > except of x86 and ia64. They will use the default ioremap_uc definition > in which returns NULL. > > If any arch sees a breakage caused by the default ioremap_uc(), it can > provide a sepcific one for its own usage. Forgot mentioning this patchset is based on below patchset. [PATCH v5 00/17] mm: ioremap: Convert architectures to take GENERIC_IOREMAP way https://lore.kernel.org/all/20230301034247.136007-1-bhe@redhat.com/T/#u > > v1->v2: > - Update log of patch 2, and document related to ioremap_uc() > according to Geert's comment. > - Add Geert's Acked-by. > > Baoquan He (2): > mips: add including > arch/*/io.h: remove ioremap_uc in some architectures > > Documentation/driver-api/device-io.rst | 11 ++++-- > arch/alpha/include/asm/io.h | 1 - > arch/hexagon/include/asm/io.h | 3 -- > arch/m68k/include/asm/kmap.h | 1 - > arch/mips/include/asm/io.h | 47 +++++++++++++++++++++++++- > arch/mips/include/asm/mmiowb.h | 2 -- > arch/parisc/include/asm/io.h | 2 -- > arch/powerpc/include/asm/io.h | 1 - > arch/sh/include/asm/io.h | 2 -- > arch/sparc/include/asm/io_64.h | 1 - > 10 files changed, 55 insertions(+), 16 deletions(-) > > -- > 2.34.1 >