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Fri, 30 May 2025 00:14:28 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFc1MiWCJM3rtF4SA+zUtOIwADOzGHi0byP7w3XKVcQ8jnwSaCZWqNdlXYc3gAeuK5uoS4Ywg== X-Received: by 2002:a05:6402:2685:b0:5e0:82a0:50dd with SMTP id 4fb4d7f45d1cf-6056eaff78amr1944013a12.27.1748589268520; Fri, 30 May 2025 00:14:28 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: Xiaoyao Li , Zhao Liu Subject: [PULL 39/77] i386/tdx: Enable user exit on KVM_HC_MAP_GPA_RANGE Date: Fri, 30 May 2025 09:12:09 +0200 Message-ID: <20250530071250.2050910-40-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: 1748589796220116600 Content-Type: text/plain; charset="utf-8" From: Xiaoyao Li KVM translates TDG.VP.VMCALL to KVM_HC_MAP_GPA_RANGE, and QEMU needs to enable user exit on KVM_HC_MAP_GPA_RANGE in order to handle the memory conversion requested by TD guest. Signed-off-by: Xiaoyao Li Reviewed-by: Zhao Liu Link: https://lore.kernel.org/r/20250508150002.689633-28-xiaoyao.li@intel.c= om Signed-off-by: Paolo Bonzini --- target/i386/kvm/tdx.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index 287bf7147e1..971f4becfa4 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -19,6 +19,8 @@ #include "system/system.h" #include "system/ramblock.h" =20 +#include + #include "hw/i386/e820_memory_layout.h" #include "hw/i386/tdvf.h" #include "hw/i386/x86.h" @@ -376,6 +378,11 @@ static int tdx_kvm_init(ConfidentialGuestSupport *cgs,= Error **errp) } } =20 + /* TDX relies on KVM_HC_MAP_GPA_RANGE to handle TDG.VP.VMCALL = */ + if (!kvm_enable_hypercall(BIT_ULL(KVM_HC_MAP_GPA_RANGE))) { + return -EOPNOTSUPP; + } + qemu_add_machine_init_done_notifier(&tdx_machine_done_notify); =20 tdx_guest =3D tdx; --=20 2.49.0