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| author | Binbin Wu <binbin.wu@linux.intel.com> | 2025-04-30 08:53:14 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2025-06-20 13:25:59 +0200 |
| commit | 427b8cf47a6959cd8b0db12bcf66e9009afa2c07 (patch) | |
| tree | 47992e1aede70c62238c23200355fba027099d1a | |
| parent | 688b0756ad2fdbe8effdb66f724a1129f62be7a2 (diff) | |
| download | qemu-427b8cf47a6959cd8b0db12bcf66e9009afa2c07.zip qemu-427b8cf47a6959cd8b0db12bcf66e9009afa2c07.tar.gz qemu-427b8cf47a6959cd8b0db12bcf66e9009afa2c07.tar.bz2 | |
i386/tdx: handle TDG.VP.VMCALL<GetTdVmCallInfo>
Signed-off-by: Binbin Wu <binbin.wu@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | target/i386/kvm/kvm.c | 12 | ||||
| -rw-r--r-- | target/i386/kvm/tdx-stub.c | 4 | ||||
| -rw-r--r-- | target/i386/kvm/tdx.c | 12 | ||||
| -rw-r--r-- | target/i386/kvm/tdx.h | 9 |
4 files changed, 37 insertions, 0 deletions
diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index 56a6b9b..8ef29fc 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_run *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 = 0; + break; default: fprintf(stderr, "KVM: unknown exit reason %d\n", run->exit_reason); ret = -1; diff --git a/target/i386/kvm/tdx-stub.c b/target/i386/kvm/tdx-stub.c index 720a4ff..62a12a0 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 2284167..ef10a19 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); } +void tdx_handle_get_tdvmcall_info(X86CPU *cpu, struct kvm_run *run) +{ + if (run->tdx.get_tdvmcall_info.leaf != 1) { + return; + } + + run->tdx.get_tdvmcall_info.r11 = 0; + run->tdx.get_tdvmcall_info.r12 = 0; + run->tdx.get_tdvmcall_info.r13 = 0; + run->tdx.get_tdvmcall_info.r14 = 0; +} + static void tdx_panicked_on_fatal_error(X86CPU *cpu, uint64_t error_code, char *message, uint64_t gpa) { diff --git a/target/i386/kvm/tdx.h b/target/i386/kvm/tdx.h index 8dd66e9..0dd41d5 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 +#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); #endif /* QEMU_I386_TDX_H */ |