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a="25584481" X-IronPort-AV: E=Sophos;i="6.09,288,1716274800"; d="scan'208";a="25584481" X-CSE-ConnectionGUID: w+NWm/qsQEObMRIL6k8yPQ== X-CSE-MsgGUID: SZlHgF/pR8av3GAvF8+zDA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,288,1716274800"; d="scan'208";a="59048955" From: Xiaoyao Li To: Paolo Bonzini , Marcelo Tosatti Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org, xiaoyao.li@intel.com Subject: [PATCH 5/9] i386/cpu: Construct CPUID 2 as stateful iff times > 1 Date: Wed, 14 Aug 2024 03:54:27 -0400 Message-Id: <20240814075431.339209-6-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240814075431.339209-1-xiaoyao.li@intel.com> References: <20240814075431.339209-1-xiaoyao.li@intel.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=198.175.65.15; envelope-from=xiaoyao.li@intel.com; helo=mgamail.intel.com X-Spam_score_int: -44 X-Spam_score: -4.5 X-Spam_bar: ---- X-Spam_report: (-4.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.125, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HK_RANDOM_ENVFROM=0.001, HK_RANDOM_FROM=0.001, RCVD_IN_DNSWL_MED=-2.3, 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 @intel.com) X-ZM-MESSAGEID: 1723622652099116600 Content-Type: text/plain; charset="utf-8" When times =3D=3D 1, the CPUID leaf 2 is not stateful. Signed-off-by: Xiaoyao Li --- target/i386/kvm/kvm.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index c168ff5691df..6618259f265c 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -1818,10 +1818,12 @@ static uint32_t kvm_x86_build_cpuid(CPUX86State *en= v, int times; =20 c->function =3D i; - c->flags =3D KVM_CPUID_FLAG_STATEFUL_FUNC | - KVM_CPUID_FLAG_STATE_READ_NEXT; cpu_x86_cpuid(env, i, 0, &c->eax, &c->ebx, &c->ecx, &c->edx); times =3D c->eax & 0xff; + if (times > 1) { + c->flags =3D KVM_CPUID_FLAG_STATEFUL_FUNC | + KVM_CPUID_FLAG_STATE_READ_NEXT; + } =20 for (j =3D 1; j < times; ++j) { if (cpuid_i =3D=3D KVM_MAX_CPUID_ENTRIES) { --=20 2.34.1