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=-6.1 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,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 30409C433E1 for ; Tue, 28 Jul 2020 13:55:24 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 F396C2074F for ; Tue, 28 Jul 2020 13:55:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=citrix.com header.i=@citrix.com header.b="ffpSzJp3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F396C2074F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=citrix.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k0Q4S-0001kG-Dh; Tue, 28 Jul 2020 13:55:08 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k0Q4Q-0001kB-Vo for xen-devel@lists.xenproject.org; Tue, 28 Jul 2020 13:55:07 +0000 X-Inumbo-ID: f0ae1aaa-d0d9-11ea-8b61-bc764e2007e4 Received: from esa4.hc3370-68.iphmx.com (unknown [216.71.155.144]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id f0ae1aaa-d0d9-11ea-8b61-bc764e2007e4; Tue, 28 Jul 2020 13:55:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1595944505; h=subject:to:cc:references:from:message-id:date: mime-version:in-reply-to:content-transfer-encoding; bh=dMn9RHv+dPpFytGvedx8MhPCEoe+fjDhnRX3gQvxjg8=; b=ffpSzJp32XfT61n8ojlOCVzXEdLGKdZmHehOPF/ZYm9gYKJBFh0baHAP cGmbvTsUk5L2fXIOtN12vUQLs2SviF+xM3SknIjCX+dAHaYLfFwulNTjd n0u3Crn/UMzwr9glCS7YvPxiJrnQuFc/0I3ZTrIU9R7Q2pMaLiG9qe0r5 M=; Authentication-Results: esa4.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none IronPort-SDR: uBlueMc8D39Fl806HQgGc7o3+lPrtdgkT7MfPgoExp6OAl1YE2dAikYcEhgWxGQntWgrXFRY6m s5wvSyAMIPxr4Kyj0rYT5UNmGEpQkJR5uhTKtjolHnEMoutGtUt0rekkho31kNTVsoGfgUYO/3 hGJO7ermaVAUtSBCUdAR/SRo7FOMGtOcRkZUr4UKhtEs2dsEzIZh/zKTJTUitpqVjl+9VkP50w GuuwFt4V2uiE8119pZxDCx08hETQwb9AM9e/vxQ+ZuWiogmGqXp8xD36GsZFq9xemLVVdYNOAI hrU= X-SBRS: 2.7 X-MesageID: 24216523 X-Ironport-Server: esa4.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.75,406,1589256000"; d="scan'208";a="24216523" Subject: Re: [PATCH 1/4] x86: replace __ASM_{CL,ST}AC To: Jan Beulich , "xen-devel@lists.xenproject.org" References: <58b9211a-f6dd-85da-d0bd-c927ac537a5d@suse.com> From: Andrew Cooper Message-ID: Date: Tue, 28 Jul 2020 14:55:01 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Language: en-GB X-ClientProxiedBy: AMSPEX02CAS01.citrite.net (10.69.22.112) To AMSPEX02CL02.citrite.net (10.69.22.126) X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Wei Liu , =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" On 15/07/2020 11:48, Jan Beulich wrote: > --- a/xen/arch/x86/arch.mk > +++ b/xen/arch/x86/arch.mk > @@ -20,6 +20,7 @@ $(call as-option-add,CFLAGS,CC,"rdrand % > $(call as-option-add,CFLAGS,CC,"rdfsbase %rax",-DHAVE_AS_FSGSBASE) > $(call as-option-add,CFLAGS,CC,"xsaveopt (%rax)",-DHAVE_AS_XSAVEOPT) > $(call as-option-add,CFLAGS,CC,"rdseed %eax",-DHAVE_AS_RDSEED) > +$(call as-option-add,CFLAGS,CC,"clac",-DHAVE_AS_CLAC_STAC) Kconfig please, rather than extending this legacy section. That said, surely stac/clac support is old enough for us to start using unconditionally? Could we see about sorting a reasonable minimum toolchain version, before we churn all the logic to deal with obsolete toolchains? ~Andrew