From patchwork Tue Nov 6 07:13:26 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Liu, Jingqi" X-Patchwork-Id: 993522 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=intel.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 42q1CF6LZHz9sDr for ; Tue, 6 Nov 2018 18:19:53 +1100 (AEDT) Received: from localhost ([::1]:39370 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gJveR-0000hH-D7 for incoming@patchwork.ozlabs.org; Tue, 06 Nov 2018 02:19:51 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47882) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gJvdf-0000fz-3c for qemu-devel@nongnu.org; Tue, 06 Nov 2018 02:19:03 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gJvdc-0007Ba-CG for qemu-devel@nongnu.org; Tue, 06 Nov 2018 02:19:03 -0500 Received: from mga04.intel.com ([192.55.52.120]:41915) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gJvdc-00076J-1V for qemu-devel@nongnu.org; Tue, 06 Nov 2018 02:19:00 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 05 Nov 2018 23:18:58 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,470,1534834800"; d="scan'208";a="88904528" Received: from optiplex-7050.sh.intel.com ([10.239.161.26]) by orsmga006.jf.intel.com with ESMTP; 05 Nov 2018 23:18:57 -0800 From: Liu Jingqi To: pbonzini@redhat.com, ehabkost@redhat.com, rth@twiddle.net Date: Tue, 6 Nov 2018 15:13:26 +0800 Message-Id: <1541488407-17045-2-git-send-email-jingqi.liu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1541488407-17045-1-git-send-email-jingqi.liu@intel.com> References: <1541488407-17045-1-git-send-email-jingqi.liu@intel.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 192.55.52.120 Subject: [Qemu-devel] [PATCH v2 1/2] x86/cpu: Enable MOVDIRI cpu feature X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Liu Jingqi , tao3.xu@intel.com, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" MOVDIRI moves doubleword or quadword from register to memory through direct store which is implemented by using write combining (WC) for writing data directly into memory without caching the data. The bit definition: CPUID.(EAX=7,ECX=0):ECX[bit 27] MOVDIRI The release document ref below link: https://software.intel.com/sites/default/files/managed/c5/15/\ architecture-instruction-set-extensions-programming-reference.pdf Cc: Xu Tao Signed-off-by: Liu Jingqi --- target/i386/cpu.c | 2 +- target/i386/cpu.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index af7e9f0..d9ab68c 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1023,7 +1023,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { "avx512bitalg", NULL, "avx512-vpopcntdq", NULL, "la57", NULL, NULL, NULL, NULL, NULL, "rdpid", NULL, - NULL, "cldemote", NULL, NULL, + NULL, "cldemote", NULL, "movdiri", NULL, NULL, NULL, NULL, }, .cpuid = { diff --git a/target/i386/cpu.h b/target/i386/cpu.h index ad0e0b4..3debba3 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -687,6 +687,7 @@ typedef uint32_t FeatureWordArray[FEATURE_WORDS]; #define CPUID_7_0_ECX_LA57 (1U << 16) #define CPUID_7_0_ECX_RDPID (1U << 22) #define CPUID_7_0_ECX_CLDEMOTE (1U << 25) /* CLDEMOTE Instruction */ +#define CPUID_7_0_ECX_MOVDIRI (1U << 27) /* MOVDIRI Instruction */ #define CPUID_7_0_EDX_AVX512_4VNNIW (1U << 2) /* AVX512 Neural Network Instructions */ #define CPUID_7_0_EDX_AVX512_4FMAPS (1U << 3) /* AVX512 Multiply Accumulation Single Precision */