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Fri, 30 May 2025 00:13:35 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFunbXpR8GW1D/l1U14L7O1B4DV7TLTxHwwod8xNRhWOKYyHc7Ti+YtrVASMG0XsOwaP7yolg== X-Received: by 2002:a17:907:d88:b0:ad5:557b:c369 with SMTP id a640c23a62f3a-adb322fcf4dmr209490766b.33.1748589215140; Fri, 30 May 2025 00:13:35 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: Xiaoyao Li , Gerd Hoffmann , Isaku Yamahata , Zhao Liu Subject: [PULL 18/77] i386/tdx: Introduce is_tdx_vm() helper and cache tdx_guest object Date: Fri, 30 May 2025 09:11:48 +0200 Message-ID: <20250530071250.2050910-19-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=170.10.133.124; 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: 1748589733389116600 Content-Type: text/plain; charset="utf-8" From: Xiaoyao Li It will need special handling for TDX VMs all around the QEMU. Introduce is_tdx_vm() helper to query if it's a TDX VM. Cache tdx_guest object thus no need to cast from ms->cgs every time. Signed-off-by: Xiaoyao Li Acked-by: Gerd Hoffmann Reviewed-by: Isaku Yamahata Reviewed-by: Zhao Liu Link: https://lore.kernel.org/r/20250508150002.689633-7-xiaoyao.li@intel.com Signed-off-by: Paolo Bonzini --- target/i386/kvm/tdx.h | 10 ++++++++++ target/i386/kvm/tdx.c | 15 ++++++++++++++- 2 files changed, 24 insertions(+), 1 deletion(-) diff --git a/target/i386/kvm/tdx.h b/target/i386/kvm/tdx.h index f3b72533616..de8ae919616 100644 --- a/target/i386/kvm/tdx.h +++ b/target/i386/kvm/tdx.h @@ -3,6 +3,10 @@ #ifndef QEMU_I386_TDX_H #define QEMU_I386_TDX_H =20 +#ifndef CONFIG_USER_ONLY +#include CONFIG_DEVICES /* CONFIG_TDX */ +#endif + #include "confidential-guest.h" =20 #define TYPE_TDX_GUEST "tdx-guest" @@ -18,4 +22,10 @@ typedef struct TdxGuest { uint64_t attributes; /* TD attributes */ } TdxGuest; =20 +#ifdef CONFIG_TDX +bool is_tdx_vm(void); +#else +#define is_tdx_vm() 0 +#endif /* CONFIG_TDX */ + #endif /* QEMU_I386_TDX_H */ diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index f8ec4fa217e..3750889453d 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -18,8 +18,16 @@ #include "kvm_i386.h" #include "tdx.h" =20 +static TdxGuest *tdx_guest; + static struct kvm_tdx_capabilities *tdx_caps; =20 +/* Valid after kvm_arch_init()->confidential_guest_kvm_init()->tdx_kvm_ini= t() */ +bool is_tdx_vm(void) +{ + return !!tdx_guest; +} + enum tdx_ioctl_level { TDX_VM_IOCTL, TDX_VCPU_IOCTL, @@ -117,15 +125,20 @@ static int get_tdx_capabilities(Error **errp) =20 static int tdx_kvm_init(ConfidentialGuestSupport *cgs, Error **errp) { + TdxGuest *tdx =3D TDX_GUEST(cgs); int r =3D 0; =20 kvm_mark_guest_state_protected(); =20 if (!tdx_caps) { r =3D get_tdx_capabilities(errp); + if (r) { + return r; + } } =20 - return r; + tdx_guest =3D tdx; + return 0; } =20 static int tdx_kvm_type(X86ConfidentialGuest *cg) --=20 2.49.0