linux-kernel - Re: [PATCH 0/6] RISC-V: Add eMMC support for TH1520 boards

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Message-ID: <20231005065726.GA5760@lst.de>
Date:   Thu, 5 Oct 2023 08:57:26 +0200
From:   Christoph Hellwig <hch@....de>
To:     "Lad, Prabhakar" <prabhakar.csengg@...il.com>
Cc:     Robin Murphy <robin.murphy@....com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Arnd Bergmann <arnd@...db.de>, Icenowy Zheng <uwu@...nowy.me>,
        Jisheng Zhang <jszhang@...nel.org>,
        Drew Fustini <dfustini@...libre.com>,
        Christoph Hellwig <hch@....de>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Robert Nelson <robertcnelson@...il.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Guo Ren <guoren@...nel.org>, Fu Wei <wefu@...hat.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Conor Dooley <conor@...nel.org>,
        Jason Kridner <jkridner@...gleboard.org>,
        Xi Ruoyao <xry111@...111.site>, Han Gao <gaohan@...as.ac.cn>,
        linux-mmc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        Björn Töpel <bjorn@...nel.org>,
        Alexandre Ghiti <alexghiti@...osinc.com>,
        Linux-MM <linux-mm@...ck.org>,
        Fabrizio Castro <fabrizio.castro@...renesas.com>
Subject: Re: [PATCH 0/6] RISC-V: Add eMMC support for TH1520 boards

No.  The global pool is a last resort only for nommu and other very
limited setups.  It should never be enable in a general-purpose kernel,
and if your hardware requires it is a failed designed and should not
be supported in a general purpose kernel build.