From owner-freebsd-hackers@FreeBSD.ORG Mon Jan 26 10:10:48 2015 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 985B3AE0 for ; Mon, 26 Jan 2015 10:10:48 +0000 (UTC) Received: from mo6-p00-ob.smtp.rzone.de (mo6-p00-ob.smtp.rzone.de [IPv6:2a01:238:20a:202:5300::6]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "*.smtp.rzone.de", Issuer "TeleSec ServerPass DE-2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 32B42ACD for ; Mon, 26 Jan 2015 10:10:47 +0000 (UTC) X-RZG-AUTH: :JiIXek6mfvEEUpFQdo7Fj1/zg48CFjWjQv0cW+St/nW/afgnrylsiWq2cS0R X-RZG-CLASS-ID: mo00 Received: from britannica.bec.de (ip-109-45-40-6.web.vodafone.de [109.45.40.6]) by smtp.strato.de (RZmta 37.1 DYNA|AUTH) with ESMTPSA id 50394fr0QAA70TP (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) for ; Mon, 26 Jan 2015 11:10:07 +0100 (CET) Received: by britannica.bec.de (sSMTP sendmail emulation); Mon, 26 Jan 2015 11:10:06 +0100 Date: Mon, 26 Jan 2015 11:10:06 +0100 From: Joerg Sonnenberger To: freebsd-hackers@freebsd.org Subject: Re: 'cacheflush' in FreeBSD ? Message-ID: <20150126101006.GA8384@britannica.bec.de> Mail-Followup-To: freebsd-hackers@freebsd.org References: <54C594A9.2030802@rawbw.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <54C594A9.2030802@rawbw.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 26 Jan 2015 10:10:48 -0000 On Sun, Jan 25, 2015 at 05:13:13PM -0800, Yuri wrote: > FreeBSD doesn't have 'cacheflush' system call. So how is instruction > cache flushed on FreeBSD? I suspect this is a bug in LLVM that this > function is a noop. __clear_cache on the relevant architectures? Joerg