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[88.146.207.194]) by smtp.gmail.com with ESMTPSA id bk4-20020a170906b0c400b0096f675ce45csm13722542ejb.182.2023.06.18.15.21.12 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 18 Jun 2023 15:21:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1687126876; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=SUEMlH5Vi9AGcf6+yYyykWVYaFzccZ57zOHtQD3Xf7Q=; b=FKIfrS03sjHo3WcgtrYvRkD9e3vkNHOPmv4gsBXLBdzSRc4P+IMdOYnMtol0gqmgbizHH9 bgNq6j+Ok/BE1O+ZM1FwmBzmuTTI1/NMlizriU2D9beBB0Xl9kKm4H1N2RAPSljWa7gGfr fZEzH1xJgFQm3Fi9m8z0F7XB95ahITI= X-MC-Unique: oZ3V_eapMu2Ad5mDr2n2mg-1 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687126873; x=1689718873; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=SUEMlH5Vi9AGcf6+yYyykWVYaFzccZ57zOHtQD3Xf7Q=; b=fgNG1+FmmWMySExPHn9aP60kIv1PTaqWO1WYs9g5o/f5KgB+f8mPx2rJ9RUtv89oEk vz6bLr6BpKWGoH8xZ08p/8a924gP3EcT0oBVCbiWmFz/nZeswCIBRZvLNFt0MsU0L3CQ t52NkDjLBSsgbKuonP3JsONSkmc6E70uRxU9XZifndMpghI3LLRJDGiUjZ9b295jWCfO skPcgV5nWSIpR4ssBm/mu9xOT5l9Ud0nMQG7nVPBd6P9I4Drp1F+VvzM9Y4aN0aQIywP tpxJx8JiEZ0b23Jxb9+MS/avi56XV5xQopaZ29qOlk6W9IgXXKSaljezIlUr6wshmZcX Eiow== X-Gm-Message-State: AC+VfDwHo2TcY7D+1RCXknt4V9Y4mkRHr7YY3XrCCpHMUNQX4neWXq2J Qk3LflQxaqUxMNR4cF2qtLNP+U2imSQ0SZZi3JamdG9GBZK3VAjQQ1jBD1YJusuP0qXQwT1hldh bqExrKlrrgvD57olrb5M63UVHZix3sfomKdP+IzxDs8fQDE8e656zWbrmh9Y+FvpRZxyP2U4zqG MCTA== X-Received: by 2002:a17:906:d542:b0:982:7505:fafa with SMTP id cr2-20020a170906d54200b009827505fafamr6679770ejc.47.1687126873715; Sun, 18 Jun 2023 15:21:13 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ76wxnfo/uCq1LSJUX2D/1R8dOpwt1o86Nq+uqpfj1HFViaC5r6hrqEZr+cRgqWSWwESYHz/g== X-Received: by 2002:a17:906:d542:b0:982:7505:fafa with SMTP id cr2-20020a170906d54200b009827505fafamr6679766ejc.47.1687126873314; Sun, 18 Jun 2023 15:21:13 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PATCH 1/2] target/i386: ignore ARCH_CAPABILITIES features in user mode emulation Date: Mon, 19 Jun 2023 00:21:08 +0200 Message-Id: <20230618222109.110843-2-pbonzini@redhat.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230618222109.110843-1-pbonzini@redhat.com> References: <20230618222109.110843-1-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=170.10.129.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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: 1687126943477100004 Content-Type: text/plain; charset="utf-8" ARCH_CAPABILITIES is only accessible through a read-only MSR, so it has no impact on any user-mode operation (user-mode cannot read the MSR). So do not bother printing warnings about it in user mode emulation. Signed-off-by: Paolo Bonzini --- target/i386/cpu.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index dec376ab56d..f4ad6d58609 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1069,6 +1069,13 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] =3D= { .msr =3D { .index =3D MSR_IA32_ARCH_CAPABILITIES, }, + /* + * FEAT_ARCH_CAPABILITIES only affects a read-only MSR, which + * cannot be read from user mode. Therefore, it has no impact + > on any user-mode operation, and warnings about unsupported + * features do not matter. + */ + .tcg_features =3D ~0U, }, [FEAT_CORE_CAPABILITY] =3D { .type =3D MSR_FEATURE_WORD, --=20 2.40.1