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SubjectRe: RFC: switch the remaining architectures to use generic GUP v2
From: Christoph Hellwig <>
Date: Sat, 1 Jun 2019 09:49:43 +0200

> below is a series to switch mips, sh and sparc64 to use the generic
> GUP code so that we only have one codebase to touch for further
> improvements to this code. I don't have hardware for any of these
> architectures, and generally no clue about their page table
> management, so handle with care.
> Changes since v1:
> - fix various issues found by the build bot
> - cherry pick and use the untagged_addr helper form Andrey
> - add various refactoring patches to share more code over architectures
> - move the powerpc hugepd code to mm/gup.c and sync it with the generic
> hup semantics

I will today look seriously at the sparc64 stuff wrt. tagged pointers.

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