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Tsirkin" , Markus Armbruster , Francesco Lavra , Marcelo Tosatti , qemu-devel@nongnu.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Rick Edgecombe , Xiaoyao Li Subject: [PATCH v8 06/55] i386/tdx: Introduce is_tdx_vm() helper and cache tdx_guest object Date: Tue, 1 Apr 2025 09:01:16 -0400 Message-Id: <20250401130205.2198253-7-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250401130205.2198253-1-xiaoyao.li@intel.com> References: <20250401130205.2198253-1-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=192.198.163.16; envelope-from=xiaoyao.li@intel.com; helo=mgamail.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.997, 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=0.999, RCVD_IN_DNSWL_MED=-2.3, 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 @intel.com) X-ZM-MESSAGEID: 1743515940187019000 Content-Type: text/plain; charset="utf-8" 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 --- changes in v3: - replace object_dynamic_cast with TDX_GUEST(); --- target/i386/kvm/tdx.c | 15 ++++++++++++++- target/i386/kvm/tdx.h | 10 ++++++++++ 2 files changed, 24 insertions(+), 1 deletion(-) diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index c67be5e618e2..16f67e18ae78 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) diff --git a/target/i386/kvm/tdx.h b/target/i386/kvm/tdx.h index f3b725336161..de8ae9196163 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 */ --=20 2.34.1