From owner-svn-src-all@freebsd.org Sun Dec 9 03:36:36 2018 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 90C7A1335554 for ; Sun, 9 Dec 2018 03:36:36 +0000 (UTC) (envelope-from kevin.bowling@kev009.com) Received: from mail-it1-x12a.google.com (mail-it1-x12a.google.com [IPv6:2607:f8b0:4864:20::12a]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 6BD54766B0 for ; Sun, 9 Dec 2018 03:36:35 +0000 (UTC) (envelope-from kevin.bowling@kev009.com) Received: by mail-it1-x12a.google.com with SMTP id h193so12961278ita.5 for ; Sat, 08 Dec 2018 19:36:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kev009.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=sbpeO+kvtDtOj/eyQfTsVGHNtIPUhrH83B4cpTtb4jc=; b=ddOZg43uZQ5YsRuP7gB1ujxwcxcRHTtCix/O8y/aK1/C7YEwTUxV9FGGo9/gIxcieD egXHTuonGnkN30yuwEuE0MOflh7h/tXAXrZeSEzezwUDvd3VG8FplD8wgDKX9dLUbCct J7mnNytnNymqH9evxHHFhhdyYiTIeE68y4rLw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=sbpeO+kvtDtOj/eyQfTsVGHNtIPUhrH83B4cpTtb4jc=; b=hm9N3jZ+MpY+5utM7byKm0LJjx7cgGzHZr608LpUvNlM+nyBmFmbKmg/ZgNByB9e2I hjT26A5Y25rhWhNP0I8G+I+h7lmXcHf5oLA2Mwmn/6n9C0AaICnxjW6RpHMRp4ggUmIv F8pYwUny4yAD05TK6+xxHgVbHIXXyuCEBNtsLqLdUMEOY/vba5zTMJ016lbJIINLavI+ qFnqZptoL2qwMuAFm1eVgRzpOa4PM06PMptCbBNakBV+TRoYbru06ojEljMPuEuWExh9 XTmXQolUv/SEC7HaAqdRciym7hfBV3twhpvu8IgEKRpUs30HhO1soSorYJ5UC3GhR70S Esog== X-Gm-Message-State: AA+aEWY67gqIJMUEObDRdeIE4BYTWocOKe8a089QajKmH77ieiaUEF1j jOgTZySiGVY1IlvjBhQzwYX9hwyV4L/u5avHGw6IRtfSKUI= X-Google-Smtp-Source: AFSGD/WLsWK16pdT860od4lb/A6BfJJEPw+ptPCRRIT49h+2XQwdtEOvGUehFQVhnXf1IVQLd99GXJgtq6Ub2RzQOD0= X-Received: by 2002:a24:b50a:: with SMTP id v10mr7505645ite.21.1544326594588; Sat, 08 Dec 2018 19:36:34 -0800 (PST) MIME-Version: 1.0 References: <201812071205.wB7C5BvA038350@repo.freebsd.org> <1544206201.1860.288.camel@freebsd.org> In-Reply-To: From: Kevin Bowling Date: Sat, 8 Dec 2018 20:36:22 -0700 Message-ID: Subject: Re: svn commit: r341682 - head/sys/sys To: mjguzik@gmail.com Cc: ian@freebsd.org, svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers , scottl@freebsd.org Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 6BD54766B0 X-Spamd-Result: default: False [-4.74 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[svn-src-all@freebsd.org]; DMARC_NA(0.00)[kev009.com]; RCPT_COUNT_FIVE(0.00)[6]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_TRACE(0.00)[kev009.com:~]; MX_GOOD(-0.01)[alt1.aspmx.l.google.com,aspmx.l.google.com,aspmx2.googlemail.com,alt2.aspmx.l.google.com,aspmx3.googlemail.com]; RCVD_IN_DNSWL_NONE(0.00)[a.2.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.list.dnswl.org : 127.0.5.0]; NEURAL_HAM_SHORT(-0.52)[-0.523,0]; R_DKIM_PERMFAIL(0.00)[kev009.com]; FREEMAIL_TO(0.00)[gmail.com]; FROM_EQ_ENVFROM(0.00)[]; RCVD_TLS_LAST(0.00)[]; IP_SCORE(-1.91)[ip: (-6.65), ipnet: 2607:f8b0::/32(-1.49), asn: 15169(-1.30), country: US(-0.09)]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; RCVD_COUNT_TWO(0.00)[2] X-Rspamd-Server: mx1.freebsd.org X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 09 Dec 2018 03:36:36 -0000 On Sat, Dec 8, 2018 at 12:09 AM Mateusz Guzik wrote: > > Fully satisfying solution would be that all architectures get 64-bit > ops, even if in the worst case they end up taking a lock. Then > subsystems would not have to ifdef on anything. However, there > was some opposition to this proposal and I don't think this is > important enough to push. Mateusz, Who is opposing this particular polyfill solution? Scott Long brought up a situation in driver development where this would be useful as well. The polyfills lower the cognitive load and #ifdef soup which are the right call here regardless of performance on toy ports. Regards, Kevin