From patchwork Fri Jun 19 07:31:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chenyi Qiang X-Patchwork-Id: 11613317 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 69E8790 for ; Fri, 19 Jun 2020 07:32:16 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 4B8B8207FC for ; Fri, 19 Jun 2020 07:32:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4B8B8207FC Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:43132 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jmBVX-0001xe-Dx for patchwork-qemu-devel@patchwork.kernel.org; Fri, 19 Jun 2020 03:32:15 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:39864) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jmBT3-0005is-FC for qemu-devel@nongnu.org; Fri, 19 Jun 2020 03:29:41 -0400 Received: from mga04.intel.com ([192.55.52.120]:38791) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jmBT0-0002VR-0S for qemu-devel@nongnu.org; Fri, 19 Jun 2020 03:29:41 -0400 IronPort-SDR: HUYBmWafCmmYk7FKooSdZ+IYBjcgd1OjozEn+Bv9wtICBJyxXhUxZdVXzZActkLzIOQC0GTKWk ZhgmcgwZbzvg== X-IronPort-AV: E=McAfee;i="6000,8403,9656"; a="140406126" X-IronPort-AV: E=Sophos;i="5.75,254,1589266800"; d="scan'208";a="140406126" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Jun 2020 00:29:35 -0700 IronPort-SDR: yUTo7uHXwSommPblEe8DZ2UqInq71ZP9cZI1Y8gb5ak58JJ1ENJcbZdu8WLQOlQBurboFzZfHp tdaiqD5N5wKQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,254,1589266800"; d="scan'208";a="292040613" Received: from chenyi-pc.sh.intel.com ([10.239.159.72]) by orsmga002.jf.intel.com with ESMTP; 19 Jun 2020 00:29:33 -0700 From: Chenyi Qiang To: Paolo Bonzini , Richard Henderson , Eduardo Habkost Subject: [PATCH v5 2/4] target/i386: add fast short REP MOV support Date: Fri, 19 Jun 2020 15:31:12 +0800 Message-Id: <20200619073114.24303-3-chenyi.qiang@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200619073114.24303-1-chenyi.qiang@intel.com> References: <20200619073114.24303-1-chenyi.qiang@intel.com> Received-SPF: pass client-ip=192.55.52.120; envelope-from=chenyi.qiang@intel.com; helo=mga04.intel.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/19 03:29:31 X-ACL-Warn: Detected OS = FreeBSD 9.x or newer [fuzzy] X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Xiaoyao Li , qemu-devel@nongnu.org, Robert Hoo Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" For CPUs support fast short REP MOV[CPUID.(EAX=7,ECX=0):EDX(bit4)], e.g Icelake and Tigerlake, expose it to the guest VM. Signed-off-by: Chenyi Qiang Reviewed-by: Eduardo Habkost --- 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 0b309ef3ab..1f3d8db842 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -984,7 +984,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { .type = CPUID_FEATURE_WORD, .feat_names = { NULL, NULL, "avx512-4vnniw", "avx512-4fmaps", - NULL, NULL, NULL, NULL, + "fsrm", NULL, NULL, NULL, "avx512-vp2intersect", NULL, "md-clear", NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL /* pconfig */, NULL, diff --git a/target/i386/cpu.h b/target/i386/cpu.h index 7d77efd9e4..da4e7e656b 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -775,6 +775,8 @@ typedef uint64_t FeatureWordArray[FEATURE_WORDS]; #define CPUID_7_0_EDX_AVX512_4VNNIW (1U << 2) /* AVX512 Multiply Accumulation Single Precision */ #define CPUID_7_0_EDX_AVX512_4FMAPS (1U << 3) +/* Fast Short Rep Mov */ +#define CPUID_7_0_EDX_FSRM (1U << 4) /* AVX512 Vector Pair Intersection to a Pair of Mask Registers */ #define CPUID_7_0_EDX_AVX512_VP2INTERSECT (1U << 8) /* Speculation Control */