From nobody Mon Feb 9 04:29:57 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1544561857155498.39072752315076; Tue, 11 Dec 2018 12:57:37 -0800 (PST) Received: from localhost ([::1]:41389 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gWp60-0006D0-1m for importer@patchew.org; Tue, 11 Dec 2018 15:57:36 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39695) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gWp2U-00043q-AS for qemu-devel@nongnu.org; Tue, 11 Dec 2018 15:53:59 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gWp2S-0001kL-Vj for qemu-devel@nongnu.org; Tue, 11 Dec 2018 15:53:57 -0500 Received: from mx1.redhat.com ([209.132.183.28]:61102) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gWp2S-0001jt-Pt for qemu-devel@nongnu.org; Tue, 11 Dec 2018 15:53:56 -0500 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 01C94300B916; Tue, 11 Dec 2018 20:53:55 +0000 (UTC) Received: from localhost (ovpn-116-63.gru2.redhat.com [10.97.116.63]) by smtp.corp.redhat.com (Postfix) with ESMTP id 6CFA4600C9; Tue, 11 Dec 2018 20:53:52 +0000 (UTC) From: Eduardo Habkost To: Peter Maydell , qemu-devel@nongnu.org Date: Tue, 11 Dec 2018 18:53:43 -0200 Message-Id: <20181211205346.11118-2-ehabkost@redhat.com> In-Reply-To: <20181211205346.11118-1-ehabkost@redhat.com> References: <20181211205346.11118-1-ehabkost@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.43]); Tue, 11 Dec 2018 20:53:56 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 1/4] 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: Eduardo Habkost , kvm@vger.kernel.org, "Michael S. Tsirkin" , Liu Jingqi , Xu Tao , Marcelo Tosatti , Paolo Bonzini , Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Liu Jingqi 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=3D7,ECX=3D0):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 Message-Id: <1541488407-17045-2-git-send-email-jingqi.liu@intel.com> Signed-off-by: Eduardo Habkost --- target/i386/cpu.h | 1 + target/i386/cpu.c | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/target/i386/cpu.h b/target/i386/cpu.h index 9c52d0cbeb..b4f03ffd74 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 */ =20 #define CPUID_7_0_EDX_AVX512_4VNNIW (1U << 2) /* AVX512 Neural Network Ins= tructions */ #define CPUID_7_0_EDX_AVX512_4FMAPS (1U << 3) /* AVX512 Multiply Accumulat= ion Single Precision */ diff --git a/target/i386/cpu.c b/target/i386/cpu.c index f81d35e1f9..227baea337 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1023,7 +1023,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORD= S] =3D { "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 =3D { --=20 2.18.0.rc1.1.g3f1ff2140