From owner-svn-src-all@freebsd.org Thu Sep 8 14:48:47 2016 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 8A142BD1AFC for ; Thu, 8 Sep 2016 14:48:47 +0000 (UTC) (envelope-from ed@nuxi.nl) Received: from mail-yw0-x22d.google.com (mail-yw0-x22d.google.com [IPv6:2607:f8b0:4002:c05::22d]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 53269A02 for ; Thu, 8 Sep 2016 14:48:46 +0000 (UTC) (envelope-from ed@nuxi.nl) Received: by mail-yw0-x22d.google.com with SMTP id g192so29899348ywh.1 for ; Thu, 08 Sep 2016 07:48:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nuxi-nl.20150623.gappssmtp.com; s=20150623; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=co5inFN0Sc7znysXoKfI3UeDxp0943BTQVxLXhQ0WNs=; b=Q6XuMy+nY73l540mNW95Bjls0vkLRAxiUcUR6D0KewqKmk0uPLAY4KcfgAOn4nUbXV 4ov78V4IafWdd/dFsmKl2ecWFtlZmWcEhjp1b2zwnevKGdw/nofGODdJIqaaMTrOJml5 1jnSKCAvXPKtsCvxktR1j1Wwqb3kqpt2ffnttJJMuQtsVzcwKn0cmMzEhvZGdqAiWbfb uxsTunAyKA6JTx+n1NYJVG/KJFhCl7VKtfxDToACOx7TO5fnQE3OoRmFKCHUTpy5W3ls mGw4b5gNlP1jkf0zRC3p/oCkgzClQoaHFOhJGr8o/lQTz4RSpi/CXgHicc3nt12TNpsY Wo2A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=co5inFN0Sc7znysXoKfI3UeDxp0943BTQVxLXhQ0WNs=; b=Yk9Gu0aUd/9GYHy783JUHkx7D98/kVVTtkTNgq2C720dihwYUwXnB4j4cwhDeljwjS sGPC8pAO/iPhaq2Yv1zLm/kq6OUl8/CgS+B8yyv326Hn85oWfESldxO6lxZDAUyLTgd8 YabDquz1oO5LnHbqFjv/K+vE8rDHTSqGsFP1HIs4J8N1HkCpqhzkmpPpLP0fAxCR5aMM yWaFq1wGNngEzMz2noUqMIx7/YDF7GoHuiNmoind+l4wV3IYgwNhI835XrXdpdD85kCe bDFlTmQwUfwCcZ7bBJBUAwm69YF1fdPXyYRFbd43heCGlL6C4/37LDc9Qjv1mov1SYmd Gtvg== X-Gm-Message-State: AE9vXwOHL+xCsS6oAT7DoHRgKxT9cgLxDhizTYJLb8EjLW7Bmr87aTX6p2K3UsxO2IsAfLMEfyRZZYH0OyDHYg== X-Received: by 10.13.229.1 with SMTP id o1mr3938ywe.95.1473346126006; Thu, 08 Sep 2016 07:48:46 -0700 (PDT) MIME-Version: 1.0 Received: by 10.13.201.71 with HTTP; Thu, 8 Sep 2016 07:48:45 -0700 (PDT) In-Reply-To: <201609081253.u88Cr18b036987@repo.freebsd.org> References: <201609081253.u88Cr18b036987@repo.freebsd.org> From: Ed Schouten Date: Thu, 8 Sep 2016 16:48:45 +0200 Message-ID: Subject: Re: svn commit: r305607 - head/sys/arm64/arm64 To: Andrew Turner Cc: src-committers , svn-src-all@freebsd.org, svn-src-head@freebsd.org Content-Type: text/plain; charset=UTF-8 X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.23 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: Thu, 08 Sep 2016 14:48:47 -0000 Hi Andrew, 2016-09-08 14:53 GMT+02:00 Andrew Turner : > Trap msr/mrs instructions. These are privileged arm64 instructions and > shouldn't normally be used. It depends on which system register is being used, right? System registers like TPIDR_EL0 are accessed by userspace all the time. -- Ed Schouten Nuxi, 's-Hertogenbosch, the Netherlands KvK-nr.: 62051717