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Fri, 30 May 2025 00:14:59 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHC/cB8C2NZeqlKL8f72UkkdX1SHAHuxfaJvP3A0/Xpvm8n3GT2OdJ7xqFeYuL+uGuDA2Cfeg== X-Received: by 2002:a17:907:3e1f:b0:aca:c38d:fef0 with SMTP id a640c23a62f3a-adb3209dc7dmr209570966b.0.1748589299385; Fri, 30 May 2025 00:14:59 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: Isaku Yamahata , Connor Kuehl , Xiaoyao Li , Gerd Hoffmann , Zhao Liu Subject: [PULL 51/77] i386/tdx: Don't synchronize guest tsc for TDs Date: Fri, 30 May 2025 09:12:21 +0200 Message-ID: <20250530071250.2050910-52-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=170.10.129.124; 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: 1748589988616116600 Content-Type: text/plain; charset="utf-8" From: Isaku Yamahata TSC of TDs is not accessible and KVM doesn't allow access of MSR_IA32_TSC for TDs. To avoid the assert() in kvm_get_tsc, make kvm_synchronize_all_tsc() noop for TDs, Signed-off-by: Isaku Yamahata Reviewed-by: Connor Kuehl Signed-off-by: Xiaoyao Li Acked-by: Gerd Hoffmann Reviewed-by: Zhao Liu Link: https://lore.kernel.org/r/20250508150002.689633-40-xiaoyao.li@intel.c= om Signed-off-by: Paolo Bonzini --- target/i386/kvm/kvm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index ee33797fdd1..4fc37cc370d 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -328,7 +328,7 @@ void kvm_synchronize_all_tsc(void) { CPUState *cpu; =20 - if (kvm_enabled()) { + if (kvm_enabled() && !is_tdx_vm()) { CPU_FOREACH(cpu) { run_on_cpu(cpu, do_kvm_synchronize_tsc, RUN_ON_CPU_NULL); } --=20 2.49.0