linux-kernel - Re: [PATCH 00/18] Allow architectures to override __READ

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Date:   Mon, 13 Jul 2020 12:34:43 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Will Deacon <will@...nel.org>
Cc:     linux-kernel@...r.kernel.org, Joel Fernandes <joelaf@...gle.com>,
        Sami Tolvanen <samitolvanen@...gle.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Kees Cook <keescook@...omium.org>,
        Marco Elver <elver@...gle.com>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Matt Turner <mattst88@...il.com>,
        Ivan Kokshaysky <ink@...assic.park.msu.ru>,
        Richard Henderson <rth@...ddle.net>,
        Alan Stern <stern@...land.harvard.edu>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Arnd Bergmann <arnd@...db.de>,
        Boqun Feng <boqun.feng@...il.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Mark Rutland <mark.rutland@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-alpha@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, kernel-team@...roid.com
Subject: Re: [PATCH 00/18] Allow architectures to override __READ_ONCE()

On Fri, Jul 10, 2020 at 05:51:44PM +0100, Will Deacon wrote:

> SeongJae Park (1):
>   Documentation/barriers/kokr: Remove references to
>     [smp_]read_barrier_depends()
> 
> Will Deacon (18):
>   tools: bpf: Use local copy of headers including uapi/linux/filter.h
>   compiler.h: Split {READ,WRITE}_ONCE definitions out into rwonce.h
>   asm/rwonce: Allow __READ_ONCE to be overridden by the architecture
>   alpha: Override READ_ONCE() with barriered implementation
>   asm/rwonce: Remove smp_read_barrier_depends() invocation
>   asm/rwonce: Don't pull <asm/barrier.h> into 'asm-generic/rwonce.h'
>   vhost: Remove redundant use of read_barrier_depends() barrier
>   alpha: Replace smp_read_barrier_depends() usage with smp_[r]mb()
>   locking/barriers: Remove definitions for [smp_]read_barrier_depends()
>   Documentation/barriers: Remove references to
>     [smp_]read_barrier_depends()
>   tools/memory-model: Remove smp_read_barrier_depends() from informal
>     doc
>   include/linux: Remove smp_read_barrier_depends() from comments
>   checkpatch: Remove checks relating to [smp_]read_barrier_depends()
>   arm64: Reduce the number of header files pulled into vmlinux.lds.S
>   arm64: alternatives: Split up alternative.h
>   arm64: cpufeatures: Add capability for LDAPR instruction
>   arm64: alternatives: Remove READ_ONCE() usage during patch operation
>   arm64: lto: Strengthen READ_ONCE() to acquire when CONFIG_LTO=y

Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>