From nobody Sat Nov 15 19:42:06 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=quarantine dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1748589997; cv=none; d=zohomail.com; s=zohoarc; b=QJb6NablyWy14vK5apo593FT3lUS7yJSAlqJtraNwgh2mZU5HzRn0EUnW5bmgumxdHFZnuvCsgGHI6nK7XCZ5IXAFY9ZzE3J2NWvQafOD69MIpjFlNTjW7/fMAESTbZiEpMsUVIgLIbU0Wwnv50tE4BrvBeBPToF/5z5ixuAym0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1748589997; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=k6rnhF8ccsOc0IyQOQ+kTTtn6LraXj7NKQVTXhIToBM=; b=eLF/0XoKyyPzPOJ/men5cUcgq8X5VtuuiGHz+TrZArwOW/nXgrGP8ncOWZJUj7vLFE1oD1IT87hiwKyWlTMxQZswc/nGRhWt1EodaaEK8NDeL7CThKKuC2nUfrBZsMqxStgXuvbQJHlphwbhpT690UPThglrSDVlub+eXhBXiLk= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=quarantine dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1748589997617675.4522815158357; Fri, 30 May 2025 00:26:37 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uKu2r-0004zp-S1; Fri, 30 May 2025 03:20:51 -0400 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 1uKtyI-0005KV-TS for qemu-devel@nongnu.org; Fri, 30 May 2025 03:16:10 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uKtyE-0007I2-9W for qemu-devel@nongnu.org; Fri, 30 May 2025 03:16:03 -0400 Received: from mail-ed1-f71.google.com (mail-ed1-f71.google.com [209.85.208.71]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-532-ZrLWcXsSM4OU7OpKQaQDOA-1; Fri, 30 May 2025 03:16:00 -0400 Received: by mail-ed1-f71.google.com with SMTP id 4fb4d7f45d1cf-604e837c1deso1448168a12.1 for ; Fri, 30 May 2025 00:16:00 -0700 (PDT) Received: from [192.168.122.1] ([151.49.64.79]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-ada5d7fef58sm275090866b.22.2025.05.30.00.15.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 30 May 2025 00:15:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1748589361; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=k6rnhF8ccsOc0IyQOQ+kTTtn6LraXj7NKQVTXhIToBM=; b=PjibNmhoZHq3k73SMEyhF+W7G5ktKd0NM/lqssegsWC9mlD+EZe2pcG+yxgxJTDJ1YRkR2 39oAiQjteI7TIyhNgcRxWwOzs8hkXpzauQabrwF+ifUpnqnMc+O54P4e+gCeage1PsnED1 QQEHjYA4mr9+JYxRAN1PMj0LbHGO9BE= X-MC-Unique: ZrLWcXsSM4OU7OpKQaQDOA-1 X-Mimecast-MFC-AGG-ID: ZrLWcXsSM4OU7OpKQaQDOA_1748589359 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1748589358; x=1749194158; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=k6rnhF8ccsOc0IyQOQ+kTTtn6LraXj7NKQVTXhIToBM=; b=PZGtlRoCL0XsrIsSu0Ql5JhUKN1tSOumlcJm5puJ8OcUvMTkFsO1eAemAlgjXxQEtN YOAHY5GGzIdVJklQL/Yiia2xfUuLBz4dcHMxiKCNukZS/C2uB7NWeLALP1+9XN4+sjj/ OW8mdDd5XMk/kDMVuavOSK8U9qOxlquZDLiy1dGlbgk+LQc/1iQnWaZZawjrPKbfaUAh XlC8tkZLCAZVxBGa6t2xYO+C7K8dXnWNXeUny0xjODBxzfKGLxKKZxlajo/eDICAt8t6 a1RFVEc9QavF4HSDSMg9oAIXkxBABpMyYyZjeg6FThjzybUL8Al2mvIcGXLAxkTL2xVR q+QA== X-Gm-Message-State: AOJu0YyQioEdW+ojakVGmUl73T4UCBQFEtqAlZKauIxhcf+OJHn1vuwh cqozbL6K2HzM5ZLHfdz6/W9hSQcdPcgPOAf6xIOoLf4adiu4U65Di9AXw9Koa9pKe1P3X5RDhN2 HQIIDrS/JcSJqEiWQHxErUW25wamKZfc++enDCzR0zwslmK/04VIC37+Z8erlNt/prQPiAMjETs HUwJhz7wvJbctuAwVKqPh2VpS+Nymq4LdRVb1nRMWy X-Gm-Gg: ASbGncs5ZY9J9Vzpktwq+n4BKjRHWeijVnCHjfvGEp5YGIjbulEoi3JqJKTLPMlO9hm L0cJnOr8SzvWefmYbSH8gfiDKu5ds2eE3sj/mx64PPvk5Gs1jW/UBmVOYekRJmW1W2h0zjc28Sc oX7kskdg7b9VZ/Jvma8DMu2HPrAIQN2FSu8CUFknGyYwr5CoWWl4zexLObYHmAFgIRd33Ju3qnv m3JmwneU3FMMULM63Wy8AZHOaSRao4/eXzIlVHvf4aGpB3S7abHnxZUequFg0AK91AiM4g3Kpa+ 8eeM849NLDCTdw== X-Received: by 2002:a17:906:36d9:b0:adb:3509:b459 with SMTP id a640c23a62f3a-adb3509b66bmr95755266b.19.1748589358280; Fri, 30 May 2025 00:15:58 -0700 (PDT) X-Google-Smtp-Source: AGHT+IF+TFC6Oz/9zd5Gy/05edUDG01AbUyet40d1cdAwasS+2wxVbEN7jmo6+R7BK9+MtMMeMNx/Q== X-Received: by 2002:a17:906:36d9:b0:adb:3509:b459 with SMTP id a640c23a62f3a-adb3509b66bmr95752666b.19.1748589357752; Fri, 30 May 2025 00:15:57 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: Babu Moger , Maksim Davydov , Zhao Liu Subject: [PULL 74/77] target/i386: Add couple of feature bits in CPUID_Fn80000021_EAX Date: Fri, 30 May 2025 09:12:44 +0200 Message-ID: <20250530071250.2050910-75-pbonzini@redhat.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250530071250.2050910-1-pbonzini@redhat.com> References: <20250530071250.2050910-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -49 X-Spam_score: -5.0 X-Spam_bar: ----- X-Spam_report: (-5.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-2.902, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1748589998867116600 Content-Type: text/plain; charset="utf-8" From: Babu Moger Add CPUID bit indicates that a WRMSR to MSR_FS_BASE, MSR_GS_BASE, or MSR_KERNEL_GS_BASE is non-serializing amd PREFETCHI that the indicates support for IC prefetch. CPUID_Fn80000021_EAX Bit Feature description 20 Indicates support for IC prefetch. 1 FsGsKernelGsBaseNonSerializing. WRMSR to FS_BASE, GS_BASE and KernelGSbase are non-serializing. Link: https://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/= programmer-references/57238.zip Signed-off-by: Babu Moger Reviewed-by: Maksim Davydov Reviewed-by: Zhao Liu Link: https://lore.kernel.org/r/a5f6283a59579b09ac345b3f21ecb3b3b2d92451.17= 46734284.git.babu.moger@amd.com Signed-off-by: Paolo Bonzini --- target/i386/cpu.h | 4 ++++ target/i386/cpu.c | 4 ++-- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/target/i386/cpu.h b/target/i386/cpu.h index 22e82444aec..1146465c8c6 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -1092,12 +1092,16 @@ uint64_t x86_cpu_get_supported_feature_word(X86CPU = *cpu, FeatureWord w); =20 /* Processor ignores nested data breakpoints */ #define CPUID_8000_0021_EAX_NO_NESTED_DATA_BP (1U << 0) +/* WRMSR to FS_BASE, GS_BASE, or KERNEL_GS_BASE is non-serializing */ +#define CPUID_8000_0021_EAX_FS_GS_BASE_NS (1U << 1) /* LFENCE is always serializing */ #define CPUID_8000_0021_EAX_LFENCE_ALWAYS_SERIALIZING (1U << 2) /* Null Selector Clears Base */ #define CPUID_8000_0021_EAX_NULL_SEL_CLR_BASE (1U << 6) /* Automatic IBRS */ #define CPUID_8000_0021_EAX_AUTO_IBRS (1U << 8) +/* Indicates support for IC prefetch */ +#define CPUID_8000_0021_EAX_PREFETCHI (1U << 20) /* Enhanced Return Address Predictor Scurity */ #define CPUID_8000_0021_EAX_ERAPS (1U << 24) /* Selective Branch Predictor Barrier */ diff --git a/target/i386/cpu.c b/target/i386/cpu.c index d01a808e3a3..0d1b9077788 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1253,12 +1253,12 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] = =3D { [FEAT_8000_0021_EAX] =3D { .type =3D CPUID_FEATURE_WORD, .feat_names =3D { - "no-nested-data-bp", NULL, "lfence-always-serializing", NULL, + "no-nested-data-bp", "fs-gs-base-ns", "lfence-always-serializi= ng", NULL, NULL, NULL, "null-sel-clr-base", NULL, "auto-ibrs", NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, - NULL, NULL, NULL, NULL, + "prefetchi", NULL, NULL, NULL, "eraps", NULL, NULL, "sbpb", "ibpb-brtype", "srso-no", "srso-user-kernel-no", NULL, }, --=20 2.49.0