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b=KWVVCGW43d7K7bKL3+7NAS3VQRFJRrNz2O6qEQSCe3iM0mAGIBLB0wpEx+hq1cgob zWrSY4r1DMNDvtk/jqhxoZ30OwLv16WASzFeifWZILoHN3jHCWsvTtmBOnGX3qdRK6 l1lpOlGCLel5N3Z1MvgzoxbYsYBqPF6aKYYqR7dABs1WFXYIYTtmKn0P0o/cEKa8ya lW8DcOqf6hegaMGqy2+XpmpZ19j9hAutwRaz8eg/A2Sun/lZdLj8UX1yrRseK7ub8j 6WcXKAD8niU8B//ISRCJPfq1nUy29cV9iN/fMEEr0y6Zvit+Gu412hJF5m69g5zV8B 6ECeucihx/xAg== From: Michael Ellerman To: Arnd Bergmann , Geert Uytterhoeven Cc: Linux-Arch , Baoquan He , linux-sh@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-hexagon@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, Christoph Hellwig , linux-mm@kvack.org, Luis Chamberlain , linux-parisc@vger.kernel.org, linux-alpha@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: Re: [PATCH v3 2/2] arch/*/io.h: remove ioremap_uc in some architectures In-Reply-To: <5dec69d0-0bc9-4f6c-8d0d-ee5422783100@app.fastmail.com> References: <20230303102817.212148-1-bhe@redhat.com> <20230303102817.212148-3-bhe@redhat.com> <87sfej1rie.fsf@mpe.ellerman.id.au> <5dec69d0-0bc9-4f6c-8d0d-ee5422783100@app.fastmail.com> Date: Tue, 07 Mar 2023 11:58:27 +1100 Message-ID: <87jzzt1ioc.fsf@mpe.ellerman.id.au> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Rspam-User: X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: C6B9D2000A X-Stat-Signature: gwyjggx9iwiawa8ok3phys67mei7ek8i X-HE-Tag: 1678150714-20555 X-HE-Meta: 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 SL/K6UyS pvdClvPOWlxX67DpesMimV/xuIB97F1M0fVLKUJsfQnd3WYUATMYZEHtpJAzY/okKSnl5bTHFSeVhc2tzUbPa+WAATv9k/FAbkQNcqd9pOrAVnSss2MeF20O76oNm5Ule3XIyhEUl/5+mkjhAsvhB355qvL/JjkZ+GpZFJKMZvInkAuYNdrzWrwPfPffD+Hu8ZCin2/tU9ut6L5eYljpqs8+8xfym7rkpHFds4Sh9QEPgkFBWSw19H2z5duDgctWagAQsj/Fal8TWIgbi89RSyudO7GRTu/nRUxQX+N3YVGE5uDu5MpXMTdrJAw== 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: "Arnd Bergmann" writes: > On Sun, Mar 5, 2023, at 10:29, Geert Uytterhoeven wrote: >> On Sun, Mar 5, 2023 at 10:23=E2=80=AFAM Michael Ellerman wrote: >>> Maybe that exact code path is only reachable on x86/ia64? But if so >>> please explain why. >>> >>> Otherwise it looks like this series could break that driver on powerpc >>> at least. >> >> Indeed. > > When I last looked into this, I sent a patch to use ioremap() > on non-x86: > > https://lore.kernel.org/all/20191111192258.2234502-1-arnd@arndb.de/ OK thanks. Baoquan can you add that patch to the start of this series if/when you post the next version? cheers