From nobody Mon Feb 9 07:06:01 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 1544562189143719.4702088074328; Tue, 11 Dec 2018 13:03:09 -0800 (PST) Received: from localhost ([::1]:41418 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gWpBL-0001kF-M2 for importer@patchew.org; Tue, 11 Dec 2018 16:03:07 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39736) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gWp2a-00047U-GE for qemu-devel@nongnu.org; Tue, 11 Dec 2018 15:54:06 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gWp2X-0001mJ-3b for qemu-devel@nongnu.org; Tue, 11 Dec 2018 15:54:04 -0500 Received: from mx1.redhat.com ([209.132.183.28]:34652) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gWp2W-0001lz-TN for qemu-devel@nongnu.org; Tue, 11 Dec 2018 15:54:01 -0500 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 300693001BDF; Tue, 11 Dec 2018 20:54:00 +0000 (UTC) Received: from localhost (ovpn-116-63.gru2.redhat.com [10.97.116.63]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7A0F45C219; Tue, 11 Dec 2018 20:53:57 +0000 (UTC) From: Eduardo Habkost To: Peter Maydell , qemu-devel@nongnu.org Date: Tue, 11 Dec 2018 18:53:44 -0200 Message-Id: <20181211205346.11118-3-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 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.45]); Tue, 11 Dec 2018 20:54:00 +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 2/4] x86/cpu: Enable MOVDIR64B 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 MOVDIR64B moves 64-bytes as direct-store with 64-bytes write atomicity. Direct store 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 28] MOVDIR64B 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: <1541488407-17045-3-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 b4f03ffd74..ef41a033c5 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -688,6 +688,7 @@ typedef uint32_t FeatureWordArray[FEATURE_WORDS]; #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_ECX_MOVDIR64B (1U << 28) /* MOVDIR64B 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 227baea337..86a934d450 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1024,7 +1024,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORD= S] =3D { "la57", NULL, NULL, NULL, NULL, NULL, "rdpid", NULL, NULL, "cldemote", NULL, "movdiri", - NULL, NULL, NULL, NULL, + "movdir64b", NULL, NULL, NULL, }, .cpuid =3D { .eax =3D 7, --=20 2.18.0.rc1.1.g3f1ff2140