From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A6966C47247 for ; Thu, 30 Apr 2020 17:20:49 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7908921775 for ; Thu, 30 Apr 2020 17:20:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ii0E3vj4"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="HOw3Mhlx" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7908921775 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=eLKNRvubVOr5/zFhXWe1tLNT3usI1PrkDevryQaujJA=; b=ii0E3vj4wOHYHy CGTCwZV9ETSz74M1WYVVXnIjzhB3rrO8ye8WTx2wq+jklbd65GkZTU3+zNMxBv57LL2rwxw0LsQpi CZVAkPNZRM8QH+sK6KIndYuoWf+yYKSv5qhHJ9IASgD7JgUpZiFgobyOgzOeZk2VpsOAw9MpOI4rT 5ETJ6pka5W2F6Yr3bobffRw2GiFCfnHH3OkA6SKMwJjLm3tjoLn6esQnqbsnfHa+tPSMP8XhxAxYY DnkwgtnX55fztUl3tnoYkXNJoLE9QloCGxBQg+YVsGiiwqSbpSiVcsdO6re2sAMRuujtlaxSjf3rg odUt5btaBGp0Bx4ObjVQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jUCre-00064I-Rf; Thu, 30 Apr 2020 17:20:46 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jUCrc-00063I-AS for linux-arm-kernel@lists.infradead.org; Thu, 30 Apr 2020 17:20:45 +0000 Received: from willie-the-truck (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 44CF120787; Thu, 30 Apr 2020 17:20:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588267244; bh=dsXBNKPwdOjWJPqWjrwst/wex2YLJsK/QSGfrcpF/U8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=HOw3MhlxNgUfezDgy35haX9L1GEyrBxVCk7YhJz9FwZKEYHy3bdqm+psDMPudnA7B uEoQO1JoN1Fsuo+oBga0g/n/vGh2BG4n2glxNeGui5yGtVOIKfE/pdyRf91EOsPm/d e6LeO3nULD0yZ0xR5OJccFiafxF+7aX9w3LFnrc0= Date: Thu, 30 Apr 2020 18:20:40 +0100 From: Will Deacon To: Mark Brown Subject: Re: [PATCH v2 3/3] arm64: insn: Report PAC and BTI instructions as NOPs Message-ID: <20200430172039.GJ25258@willie-the-truck> References: <20200428172433.48830-1-broonie@kernel.org> <20200428172433.48830-4-broonie@kernel.org> <20200430160928.GD25258@willie-the-truck> <20200430171645.GG4633@sirena.org.uk> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200430171645.GG4633@sirena.org.uk> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200430_102044_382172_664F0B9D X-CRM114-Status: GOOD ( 12.35 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Catalin Marinas , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Apr 30, 2020 at 06:16:45PM +0100, Mark Brown wrote: > On Thu, Apr 30, 2020 at 05:09:29PM +0100, Will Deacon wrote: > > On Tue, Apr 28, 2020 at 06:24:33PM +0100, Mark Brown wrote: > > > > + /* > > > + * The PAC and BTI instructons are not strictly NOPs but until > > > + * better support is added we can treat them as such. > > > + */ > > > switch (insn & 0xFE0) { > > > Are you deliberately omitting XPACLRI? If so, maybe add a comment to say > > why, since it looks a bit weird without it. > > Not deliberately, no - I'm not sure I'd heard of it before and it's one > of those cases where the spec doesn't call out the instruction as being > in the hint space. Hmm, so I only spotted it because of "Decode" pseudocode for HINT on p.929 of rev F.a of the Arm ARM (the one with the AUTHASP typo). Will _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel