linux-kernel - Re: [PATCH v7 07/11] sparc64: optimized struct page zeroing

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Message-Id: <20170830.104608.2080967179463692935.davem@davemloft.net>
Date:   Wed, 30 Aug 2017 10:46:08 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     pasha.tatashin@...cle.com
Cc:     linux-kernel@...r.kernel.org, sparclinux@...r.kernel.org,
        linux-mm@...ck.org, linuxppc-dev@...ts.ozlabs.org,
        linux-s390@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        x86@...nel.org, kasan-dev@...glegroups.com, borntraeger@...ibm.com,
        heiko.carstens@...ibm.com, willy@...radead.org, mhocko@...nel.org,
        ard.biesheuvel@...aro.org, will.deacon@....com,
        catalin.marinas@....com, sam@...nborg.org,
        mgorman@...hsingularity.net, Steven.Sistare@...cle.com,
        daniel.m.jordan@...cle.com, bob.picco@...cle.com
Subject: Re: [PATCH v7 07/11] sparc64: optimized struct page zeroing

From: Pasha Tatashin <pasha.tatashin@...cle.com>
Date: Wed, 30 Aug 2017 09:19:58 -0400

> The reason I am not doing initializing stores is because they require
> a membar, even if only regular stores are following (I hoped to do a
> membar before first load). This is something I was thinking was not
> true, but after consulting with colleagues and checking processor
> manual, I verified that it is the case.

Oh yes, that's right, now I remember.