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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 27/55] i386/tdx: Enable user exit on KVM_HC_MAP_GPA_RANGE Date: Tue, 1 Apr 2025 09:01:37 -0400 Message-Id: <20250401130205.2198253-28-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: 1743518556976019000 Content-Type: text/plain; charset="utf-8" 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 --- changes in v6: - new patch; --- 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 78764b1d4be4..f8953f598584 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -19,6 +19,8 @@ #include "system/system.h" #include "exec/ramblock.h" =20 +#include + #include "hw/i386/e820_memory_layout.h" #include "hw/i386/tdvf.h" #include "hw/i386/x86.h" @@ -378,6 +380,11 @@ 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 2.34.1