From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 41609C433F5 for ; Tue, 8 Mar 2022 11:54:05 +0000 (UTC) Received: from localhost ([::1]:43502 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nRYPk-0003AX-5i for qemu-devel@archiver.kernel.org; Tue, 08 Mar 2022 06:54:04 -0500 Received: from eggs.gnu.org ([209.51.188.92]:44724) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nRY7g-0007pm-Nj for qemu-devel@nongnu.org; Tue, 08 Mar 2022 06:35:26 -0500 Received: from [2a00:1450:4864:20::529] (port=36615 helo=mail-ed1-x529.google.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nRY7c-00060T-Iw for qemu-devel@nongnu.org; Tue, 08 Mar 2022 06:35:23 -0500 Received: by mail-ed1-x529.google.com with SMTP id o1so22987132edc.3 for ; Tue, 08 Mar 2022 03:35:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=Ha14pz7x/m5u7qcmHOLfQZi29aAKiPe3b4fjSvg00PY=; b=LndUvJqSVMCZ3kUtNHleyITWlnXejCI9f+jMN+6WtTMGAaJQ/Qh87hY2zfsX3xqZuH RfZLQKaNNaERJTcrVTgU8bOW+fzrH5nJZlApBq0YNkl/VTq1DOup/2izWdXAanY9x+sh E8Y+IjwTdGj9tns2HHT6Yu19IMgD+seIZiOA0CX1mb+hErIcGJwxjTedx5bufY3W/c6f C1odjyf22Y90Jc/O+62p+74AAAEomXrVoD3DoCTSS8wsR+vNPxgjwnYJeOPjLhDduNc4 VQeuKXLKEqxRlEctWH1p+DYwIT1A3Po8z5C7yCl64GHRwtndAS5jCb2KhZBXTNDAmsHg xH/w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; bh=Ha14pz7x/m5u7qcmHOLfQZi29aAKiPe3b4fjSvg00PY=; b=W/V084qiLN9nNhv8sGOH5egs15Wf1T0DSvXEToApvxe8GcK7vvfjwtgZw4RWiBbYTv OxlaM9k+3xoSSSdSXzrLt72GkjNvaeI5ARn+hhRqM/nEguOQas/UKqfHIYNuxFAB6avK m2Hza+JkQfzLGMP1oud3S33MxWVb2zjkHz8qFZnIx2Z+iyvnfw/SMemvxIIS0SyA9TPE 2zL0buxLn5vLMZEE6mG/Xd0WYiaE69hEcnnkzXh0MGvqXjdThSeTFyoc+lyCO1dZsaaO bWgz7GbbztJs17kRmr+Vr42Lzo+UyTHMNd0x9m0zhSEm8X7Q5x3m+UuQd/OTwiPzwAi0 JufQ== X-Gm-Message-State: AOAM531jJVbMZNOlRNl1lVHcyeKuzdusEeYijn2VZi3WIqIbjv5vd4q1 owC/wMYdw0fuOzzbSLvcMbj2L6Vn+/Q= X-Google-Smtp-Source: ABdhPJzdoJ4aPC16eebZp3keyp467JZNZE9F48eXlzNPYcG2DhAXipnmAn6hzJlM04HXSreyPXNGYw== X-Received: by 2002:a50:e60f:0:b0:415:9509:32a2 with SMTP id y15-20020a50e60f000000b00415950932a2mr15547913edm.235.1646739315448; Tue, 08 Mar 2022 03:35:15 -0800 (PST) Received: from avogadro.lan ([2001:b07:6468:f312:c8dd:75d4:99ab:290a]) by smtp.gmail.com with ESMTPSA id l2-20020aa7cac2000000b003f9b3ac68d6sm7491868edt.15.2022.03.08.03.35.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Mar 2022 03:35:14 -0800 (PST) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PULL 16/22] x86: Add XFD faulting bit for state components Date: Tue, 8 Mar 2022 12:34:39 +0100 Message-Id: <20220308113445.859669-17-pbonzini@redhat.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220308113445.859669-1-pbonzini@redhat.com> References: <20220308113445.859669-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Host-Lookup-Failed: Reverse DNS lookup failed for 2a00:1450:4864:20::529 (failed) Received-SPF: pass client-ip=2a00:1450:4864:20::529; envelope-from=paolo.bonzini@gmail.com; helo=mail-ed1-x529.google.com X-Spam_score_int: 0 X-Spam_score: -0.1 X-Spam_bar: / X-Spam_report: (-0.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.249, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, PDS_HP_HELO_NORDNS=0.659, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no 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: , Cc: Yang Zhong , Jing Liu Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Jing Liu Intel introduces XFD faulting mechanism for extended XSAVE features to dynamically enable the features in runtime. If CPUID (EAX=0Dh, ECX=n, n>1).ECX[2] is set as 1, it indicates support for XFD faulting of this state component. Signed-off-by: Jing Liu Signed-off-by: Yang Zhong Message-Id: <20220217060434.52460-5-yang.zhong@intel.com> Signed-off-by: Paolo Bonzini --- target/i386/cpu.c | 3 ++- target/i386/cpu.h | 2 ++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 505ee289bc..79e24bb23f 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -5496,7 +5496,8 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count, const ExtSaveArea *esa = &x86_ext_save_areas[count]; *eax = esa->size; *ebx = esa->offset; - *ecx = esa->ecx & ESA_FEATURE_ALIGN64_MASK; + *ecx = esa->ecx & + (ESA_FEATURE_ALIGN64_MASK | ESA_FEATURE_XFD_MASK); } } break; diff --git a/target/i386/cpu.h b/target/i386/cpu.h index 9630f4712a..925d0129e2 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -557,8 +557,10 @@ typedef enum X86Seg { #define XSTATE_DYNAMIC_MASK (XSTATE_XTILE_DATA_MASK) #define ESA_FEATURE_ALIGN64_BIT 1 +#define ESA_FEATURE_XFD_BIT 2 #define ESA_FEATURE_ALIGN64_MASK (1U << ESA_FEATURE_ALIGN64_BIT) +#define ESA_FEATURE_XFD_MASK (1U << ESA_FEATURE_XFD_BIT) /* CPUID feature words */ -- 2.35.1