From patchwork Fri Mar 3 06:59:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tao Su X-Patchwork-Id: 13158374 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5B800C64EC4 for ; Fri, 3 Mar 2023 07:01:41 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pXzOT-0000aL-Of; Fri, 03 Mar 2023 01:59:53 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pXzOS-0000a9-In for qemu-devel@nongnu.org; Fri, 03 Mar 2023 01:59:52 -0500 Received: from mga14.intel.com ([192.55.52.115]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pXzOQ-00057t-Pr for qemu-devel@nongnu.org; Fri, 03 Mar 2023 01:59:52 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1677826790; x=1709362790; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=WXXlRh6R6FikHSVdT8dpz2Fxx+5hPhBYSaOJ+6oH2KY=; b=JySVBOkiYFqkRUWCNz2k9ATS9WMmDnrRUH2yYF5cIdTto0cjAdmXyfQW dBN9CQfLMPdzzix/oexV9pXO9A6LkrU5S2n7VDHXHBqCISNcfu7gsg5Mo l+EhJq/ni1hx6mOxEAYLPBDtvkRFrXdNSmo65o30sW7K9liUScJxlw+58 3HyB7HkAH8eeU3XTOvnkJ1Qp1vsuuam7cmD7fkTVWwf79+B9av3DP7EsQ bS03hyX3ZOuPtux4cQDclr9dr61WSbCXmSLeH5GbvAb5kOzhBdoBwria6 zcWilWXbMvNqsJpMLahHBVAyeailCrdLyd9jua5DxigJrj4//jPFwOYof A==; X-IronPort-AV: E=McAfee;i="6500,9779,10637"; a="334995813" X-IronPort-AV: E=Sophos;i="5.98,229,1673942400"; d="scan'208";a="334995813" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Mar 2023 22:59:49 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10637"; a="668550426" X-IronPort-AV: E=Sophos;i="5.98,229,1673942400"; d="scan'208";a="668550426" Received: from linux.bj.intel.com ([10.238.157.63]) by orsmga007.jf.intel.com with ESMTP; 02 Mar 2023 22:59:47 -0800 From: Tao Su To: qemu-devel@nongnu.org Cc: pbonzini@redhat.com, richard.henderson@linaro.org, yang.zhong@intel.com, jing2.liu@intel.com, vkuznets@redhat.com, philmd@linaro.org Subject: [PATCH v2 2/6] target/i386: Add support for AMX-FP16 in CPUID enumeration Date: Fri, 3 Mar 2023 14:59:09 +0800 Message-Id: <20230303065913.1246327-3-tao1.su@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230303065913.1246327-1-tao1.su@linux.intel.com> References: <20230303065913.1246327-1-tao1.su@linux.intel.com> MIME-Version: 1.0 Received-SPF: none client-ip=192.55.52.115; envelope-from=tao1.su@linux.intel.com; helo=mga14.intel.com X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Jiaxi Chen Latest Intel platform Granite Rapids has introduced a new instruction - AMX-FP16, which performs dot-products of two FP16 tiles and accumulates the results into a packed single precision tile. AMX-FP16 adds FP16 capability and allows a FP16 GPU trained model to run faster without loss of accuracy or added SW overhead. The bit definition: CPUID.(EAX=7,ECX=1):EAX[bit 21] Add CPUID definition for AMX-FP16. Signed-off-by: Jiaxi Chen Signed-off-by: Tao Su --- target/i386/cpu.c | 2 +- target/i386/cpu.h | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index e54e13d050..ed08a52619 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -876,7 +876,7 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] = { NULL, NULL, "fzrm", "fsrs", "fsrc", NULL, NULL, NULL, NULL, NULL, NULL, NULL, - NULL, NULL, NULL, NULL, + NULL, "amx-fp16", NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, }, diff --git a/target/i386/cpu.h b/target/i386/cpu.h index 7df8f4b8f9..ae6a0fdfc2 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -912,6 +912,8 @@ uint64_t x86_cpu_get_supported_feature_word(FeatureWord w, #define CPUID_7_1_EAX_FSRS (1U << 11) /* Fast Short REP CMPS/SCAS */ #define CPUID_7_1_EAX_FSRC (1U << 12) +/* Support Tile Computational Operations on FP16 Numbers */ +#define CPUID_7_1_EAX_AMX_FP16 (1U << 21) /* XFD Extend Feature Disabled */ #define CPUID_D_1_EAX_XFD (1U << 4)