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Thu, 05 Sep 2024 04:23:00 -0700 (PDT) Date: Thu, 5 Sep 2024 11:22:36 +0000 In-Reply-To: <20240905112237.3586972-1-whendrik@google.com> Mime-Version: 1.0 References: <20240905112237.3586972-1-whendrik@google.com> X-Mailer: git-send-email 2.46.0.469.g59c65b2a67-goog Message-ID: <20240905112237.3586972-8-whendrik@google.com> Subject: [PATCH v2 7/8] i386/cpu: Adjust CPUID level for RDT features From: Hendrik Wuethrich To: qemu-devel@nongnu.org, Jonathan.Cameron@huawei.com, eduardo@habkost.net, richard.henderson@linaro.org, marcel.apfelbaum@gmail.com, mst@redhat.com, pbonzini@redhat.com Cc: peternewman@google.com, " =?utf-8?b?4oCqSGVuZHJpayBXw7x0aHJpY2g=?= " Received-SPF: pass client-ip=2607:f8b0:4864:20::114a; envelope-from=3lJTZZggKCmEVGDMCQHJFNNFKD.BNLPDLT-CDUDKMNMFMT.NQF@flex--whendrik.bounces.google.com; helo=mail-yw1-x114a.google.com X-Spam_score_int: -95 X-Spam_score: -9.6 X-Spam_bar: --------- X-Spam_report: (-9.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-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, USER_IN_DEF_DKIM_WL=-7.5 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: ‪Hendrik Wüthrich Adjust minimum CPUID level if RDT monitoring or allocation features are enabled to ensure that CPUID will return them. Signed-off-by: Hendrik Wüthrich --- target/i386/cpu.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 36e19bfa8c..7c8bf707c2 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -7562,6 +7562,16 @@ void x86_cpu_expand_features(X86CPU *cpu, Error **errp) if (env->features[FEAT_7_0_EBX] & CPUID_7_0_EBX_SGX) { x86_cpu_adjust_level(cpu, &env->cpuid_min_level, 0x12); } + + /* RDT monitoring requires CPUID[0xF] */ + if (env->features[FEAT_7_0_EBX] & CPUID_7_0_EBX_PQM) { + x86_cpu_adjust_level(cpu, &env->cpuid_min_level, 0xF); + } + + /* RDT allocation requires CPUID[0x10] */ + if (env->features[FEAT_7_0_EBX] & CPUID_7_0_EBX_PQE) { + x86_cpu_adjust_level(cpu, &env->cpuid_min_level, 0x10); + } } /* Set cpuid_*level* based on cpuid_min_*level, if not explicitly set */