[{"id":1794845,"web_url":"http://patchwork.ozlabs.org/comment/1794845/","msgid":"<20171027130504.l34y2u6l2e2rxlac@armageddon.cambridge.arm.com>","list_archive_url":null,"date":"2017-10-27T13:05:04","subject":"Re: [PATCH v4 25/28] arm64/sve: Detect SVE and activate runtime\n\tsupport","submitter":{"id":938,"url":"http://patchwork.ozlabs.org/api/people/938/","name":"Catalin Marinas","email":"catalin.marinas@arm.com"},"content":"On Fri, Oct 27, 2017 at 11:51:07AM +0100, Dave P Martin wrote:\n> This patch enables detection of hardware SVE support via the\n> cpufeatures framework, and reports its presence to the kernel and\n> userspace via the new ARM64_SVE cpucap and HWCAP_SVE hwcap\n> respectively.\n> \n> Userspace can also detect SVE using ID_AA64PFR0_EL1, using the\n> cpufeatures MRS emulation.\n> \n> When running on hardware that supports SVE, this enables runtime\n> kernel support for SVE, and allows user tasks to execute SVE\n> instructions and make of the of the SVE-specific user/kernel\n> interface extensions implemented by this series.\n> \n> Signed-off-by: Dave Martin \n> Reviewed-by: Suzuki K Poulose \n> Cc: Catalin Marinas \n\nReviewed-by: Catalin Marinas ","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":["patchwork-incoming@bilbo.ozlabs.org","mailing list libc-alpha@sourceware.org"],"Authentication-Results":["ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=sourceware.org\n\t(client-ip=209.132.180.131; helo=sourceware.org;\n\tenvelope-from=libc-alpha-return-86475-incoming=patchwork.ozlabs.org@sourceware.org;\n\treceiver=)","ozlabs.org; dkim=pass (1024-bit key;\n\tsecure) header.d=sourceware.org header.i=@sourceware.org\n\theader.b=\"ucOWRwLG\"; dkim-atps=neutral","sourceware.org; auth=none"],"Received":["from sourceware.org (server1.sourceware.org [209.132.180.131])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3yNkcz5Sxfz9t2Q\n\tfor ;\n\tSat, 28 Oct 2017 00:05:23 +1100 (AEDT)","(qmail 23819 invoked by alias); 27 Oct 2017 13:05:15 -0000","(qmail 23807 invoked by uid 89); 27 Oct 2017 13:05:15 -0000"],"DomainKey-Signature":"a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id\n\t:list-unsubscribe:list-subscribe:list-archive:list-post\n\t:list-help:sender:date:from:to:cc:subject:message-id:references\n\t:mime-version:content-type:in-reply-to; q=dns; s=default; b=W26x\n\tuh4X37VkKzLs3aDSiuWUb3GNr/6oCDY8qY4xZOVNAebTnOtdAGUVTFAQEZfpmxSk\n\tYsUbSyg7Qe3vHGldXMiois1NcuR2vBP6DnMvFVecZDnK8tMVrSU74Y7y6+4VKK4O\n\t3qqclxTKANnWY6CIQNQ5JqHOchgoKlbYBQrsrjE=","DKIM-Signature":"v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id\n\t:list-unsubscribe:list-subscribe:list-archive:list-post\n\t:list-help:sender:date:from:to:cc:subject:message-id:references\n\t:mime-version:content-type:in-reply-to; s=default; bh=gjOY8CS5YE\n\tz/Qd0uzb2O/bp4N0E=; b=ucOWRwLGeT3hqaSSlNZJEzCRWFZwiVu2dwEqrBH37Z\n\t1Hnefl8OccTRSbFHOLpmBMNHLebGWEOQ7muCOJOlqO+vfvqLOKJSkOIo+JSalp9G\n\t7XtvFkRss+his2Uc5oANykZRbDVCY0fPId6H5I559QZfBWxOhG1dj/n47reIUyji\n\tE=","Mailing-List":"contact libc-alpha-help@sourceware.org; run by ezmlm","Precedence":"bulk","List-Id":"","List-Unsubscribe":"","List-Subscribe":"","List-Archive":"","List-Post":"","List-Help":",\n\t","Sender":"libc-alpha-owner@sourceware.org","X-Virus-Found":"No","X-Spam-SWARE-Status":"No, score=-1.9 required=5.0 tests=BAYES_00,\n\tRP_MATCHES_RCVD, SPF_PASS autolearn=ham version=3.3.2 spammy=","X-HELO":"foss.arm.com","Date":"Fri, 27 Oct 2017 14:05:04 +0100","From":"Catalin Marinas ","To":"Dave Martin ","Cc":"linux-arm-kernel@lists.infradead.org, linux-arch@vger.kernel.org,\n\tOkamoto Takayuki , \tlibc-alpha@sourceware.org,\n\tArd Biesheuvel , Szabolcs Nagy\n\t, \tWill Deacon , Alex\n\t=?iso-8859-1?q?Benn=E9e?= ,\n\tkvmarm@lists.cs.columbia.edu","Subject":"Re: [PATCH v4 25/28] arm64/sve: Detect SVE and activate runtime\n\tsupport","Message-ID":"<20171027130504.l34y2u6l2e2rxlac@armageddon.cambridge.arm.com>","References":"<1509101470-7881-1-git-send-email-Dave.Martin@arm.com>\n\t<1509101470-7881-26-git-send-email-Dave.Martin@arm.com>","MIME-Version":"1.0","Content-Type":"text/plain; charset=us-ascii","Content-Disposition":"inline","In-Reply-To":"<1509101470-7881-26-git-send-email-Dave.Martin@arm.com>","User-Agent":"NeoMutt/20170113 (1.7.2)"}}]