Re: [PATCH v17 19/35] arch/mm: Export direct {un,}map functions

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To: Christoph Hellwig <hch@xxxxxxxxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Quentin Perret <qperret@xxxxxxxxxx>, Chris Goldsworthy <quic_cgoldswo@xxxxxxxxxxx>, Android KVM <android-kvm@xxxxxxxxxx>, Patrick Daly <quic_pdaly@xxxxxxxxxxx>, Alex Elder <elder@xxxxxxxxxx>, Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>, Murali Nalajal <quic_mnalajal@xxxxxxxxxxx>, Trilok Soni <quic_tsoni@xxxxxxxxxxx>, Srivatsa Vaddagiri <quic_svaddagi@xxxxxxxxxxx>, Carl van Schaik <quic_cvanscha@xxxxxxxxxxx>, Philip Derrin <quic_pderrin@xxxxxxxxxxx>, Prakruthi Deepak Heragu <quic_pheragu@xxxxxxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, Rob Herring <robh+dt@xxxxxxxxxx>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@xxxxxxxxxx>, Conor Dooley <conor+dt@xxxxxxxxxx>, Catalin Marinas <catalin.marinas@xxxxxxx>, Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>, Bjorn Andersson <andersson@xxxxxxxxxx>, Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>, Fuad Tabba <tabba@xxxxxxxxxx>, Sean Christopherson <seanjc@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, linux-arm-msm@xxxxxxxxxxxxxxx, linux-doc@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, devicetree@xxxxxxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx
Subject: Re: [PATCH v17 19/35] arch/mm: Export direct {un,}map functions
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Mon, 26 Feb 2024 03:06:11 -0800
In-reply-to: <20240223071006483-0800.eberman@hu-eberman-lv.qualcomm.com>
References: <20240222-gunyah-v17-0-1e9da6763d38@quicinc.com> <20240222-gunyah-v17-19-1e9da6763d38@quicinc.com> <ZdhEtH7xzbzdhS2j@infradead.org> <20240223071006483-0800.eberman@hu-eberman-lv.qualcomm.com>

The point is that we can't we just allow modules to unmap data from
the kernel mapping, no matter how noble your intentions are.

Follow-Ups:
- Re: [PATCH v17 19/35] arch/mm: Export direct {un,}map functions
  - From: David Hildenbrand

References:
- [PATCH v17 00/35] Drivers for Gunyah hypervisor
  - From: Elliot Berman
- [PATCH v17 19/35] arch/mm: Export direct {un,}map functions
  - From: Elliot Berman
- Re: [PATCH v17 19/35] arch/mm: Export direct {un,}map functions
  - From: Christoph Hellwig
- Re: Re: [PATCH v17 19/35] arch/mm: Export direct {un,}map functions
  - From: Elliot Berman

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