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helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -39 X-Spam_score: -4.0 X-Spam_bar: ---- X-Spam_report: (-4.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.897, 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_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_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: 1750437826330116600 Content-Type: text/plain; charset="utf-8" From: Binbin Wu Signed-off-by: Binbin Wu Signed-off-by: Paolo Bonzini --- target/i386/kvm/tdx.h | 9 +++++++++ target/i386/kvm/kvm.c | 12 ++++++++++++ target/i386/kvm/tdx-stub.c | 4 ++++ target/i386/kvm/tdx.c | 12 ++++++++++++ 4 files changed, 37 insertions(+) diff --git a/target/i386/kvm/tdx.h b/target/i386/kvm/tdx.h index 8dd66e90149..0dd41d5811a 100644 --- a/target/i386/kvm/tdx.h +++ b/target/i386/kvm/tdx.h @@ -21,6 +21,14 @@ typedef struct TdxGuestClass { /* TDX requires bus frequency 25MHz */ #define TDX_APIC_BUS_CYCLES_NS 40 =20 +#define TDVMCALL_GET_TD_VM_CALL_INFO 0x10000 + +#define TDG_VP_VMCALL_SUCCESS 0x0000000000000000ULL +#define TDG_VP_VMCALL_RETRY 0x0000000000000001ULL +#define TDG_VP_VMCALL_INVALID_OPERAND 0x8000000000000000ULL +#define TDG_VP_VMCALL_GPA_INUSE 0x8000000000000001ULL +#define TDG_VP_VMCALL_ALIGN_ERROR 0x8000000000000002ULL + enum TdxRamType { TDX_RAM_UNACCEPTED, TDX_RAM_ADDED, @@ -61,5 +69,6 @@ int tdx_pre_create_vcpu(CPUState *cpu, Error **errp); void tdx_set_tdvf_region(MemoryRegion *tdvf_mr); int tdx_parse_tdvf(void *flash_ptr, int size); int tdx_handle_report_fatal_error(X86CPU *cpu, struct kvm_run *run); +void tdx_handle_get_tdvmcall_info(X86CPU *cpu, struct kvm_run *run); =20 #endif /* QEMU_I386_TDX_H */ diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index 56a6b9b6381..8ef29fc1fb1 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -6170,6 +6170,18 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_ru= n *run) break; } break; + case KVM_EXIT_TDX: + /* + * run->tdx is already set up for the case where userspace + * does not handle the TDVMCALL. + */ + switch (run->tdx.nr) { + case TDVMCALL_GET_TD_VM_CALL_INFO: + tdx_handle_get_tdvmcall_info(cpu, run); + break; + } + ret =3D 0; + break; default: fprintf(stderr, "KVM: unknown exit reason %d\n", run->exit_reason); ret =3D -1; diff --git a/target/i386/kvm/tdx-stub.c b/target/i386/kvm/tdx-stub.c index 720a4ff046e..62a12a06775 100644 --- a/target/i386/kvm/tdx-stub.c +++ b/target/i386/kvm/tdx-stub.c @@ -18,3 +18,7 @@ int tdx_handle_report_fatal_error(X86CPU *cpu, struct kvm= _run *run) { return -EINVAL; } + +void tdx_handle_get_tdvmcall_info(X86CPU *cpu, struct kvm_run *run) +{ +} diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index 2284167141a..ef10a193474 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -1120,6 +1120,18 @@ int tdx_parse_tdvf(void *flash_ptr, int size) return tdvf_parse_metadata(&tdx_guest->tdvf, flash_ptr, size); } =20 +void tdx_handle_get_tdvmcall_info(X86CPU *cpu, struct kvm_run *run) +{ + if (run->tdx.get_tdvmcall_info.leaf !=3D 1) { + return; + } + + run->tdx.get_tdvmcall_info.r11 =3D 0; + run->tdx.get_tdvmcall_info.r12 =3D 0; + run->tdx.get_tdvmcall_info.r13 =3D 0; + run->tdx.get_tdvmcall_info.r14 =3D 0; +} + static void tdx_panicked_on_fatal_error(X86CPU *cpu, uint64_t error_code, char *message, uint64_t gpa) { --=20 2.49.0