| Message ID | 20250124132048.3229049-13-xiaoyao.li@intel.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | QEMU TDX support | expand |
Xiaoyao Li <xiaoyao.li@intel.com> writes: > Validate TD attributes with tdx_caps that only supported bits arer > allowed by KVM. > > Besides, sanity check the attribute bits that have not been supported by > QEMU yet. e.g., debug bit, it will be allowed in the future when debug > TD support lands in QEMU. > > Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com> > Acked-by: Gerd Hoffmann <kraxel@redhat.com> > --- > Changes in v7: > - Define TDX_SUPPORTED_TD_ATTRS as QEMU supported mask, to validates > user's request. (Rick) > > Changes in v3: > - using error_setg() for error report; (Daniel) > --- > qapi/qom.json | 16 +++++- > target/i386/kvm/tdx.c | 118 +++++++++++++++++++++++++++++++++++++++++- > target/i386/kvm/tdx.h | 3 ++ > 3 files changed, 134 insertions(+), 3 deletions(-) > > diff --git a/qapi/qom.json b/qapi/qom.json > index 8740626c4ee6..a53000ca6fb4 100644 > --- a/qapi/qom.json > +++ b/qapi/qom.json > @@ -1060,11 +1060,25 @@ > # pages. Some guest OS (e.g., Linux TD guest) may require this to > # be set, otherwise they refuse to boot. > # > +# @mrconfigid: ID for non-owner-defined configuration of the guest TD, > +# e.g., run-time or OS configuration (base64 encoded SHA384 digest). > +# Defaults to all zeros. > +# > +# @mrowner: ID for the guest TD’s owner (base64 encoded SHA384 digest). > +# Defaults to all zeros. > +# > +# @mrownerconfig: ID for owner-defined configuration of the guest TD, > +# e.g., specific to the workload rather than the run-time or OS > +# (base64 encoded SHA384 digest). Defaults to all zeros. All three members are IDs, but only the first one has "id" in its name. Odd. Any particular reason for that? > +# > # Since: 10.0 > ## > { 'struct': 'TdxGuestProperties', > 'data': { '*attributes': 'uint64', > - '*sept-ve-disable': 'bool' } } > + '*sept-ve-disable': 'bool', > + '*mrconfigid': 'str', > + '*mrowner': 'str', > + '*mrownerconfig': 'str' } } The member names are abbreviations all run together, wheras QAPI/QMP favors words-separated-with-dashes. If you invented them, please change them to QAPI/QMP style. If they are established TDX terminology, keep them as they are, but please show us your evidence. > > ## > # @ThreadContextProperties: [...]
On 2/5/2025 5:06 PM, Markus Armbruster wrote: > Xiaoyao Li <xiaoyao.li@intel.com> writes: > >> Validate TD attributes with tdx_caps that only supported bits arer >> allowed by KVM. >> >> Besides, sanity check the attribute bits that have not been supported by >> QEMU yet. e.g., debug bit, it will be allowed in the future when debug >> TD support lands in QEMU. >> >> Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com> >> Acked-by: Gerd Hoffmann <kraxel@redhat.com> >> --- >> Changes in v7: >> - Define TDX_SUPPORTED_TD_ATTRS as QEMU supported mask, to validates >> user's request. (Rick) >> >> Changes in v3: >> - using error_setg() for error report; (Daniel) >> --- >> qapi/qom.json | 16 +++++- >> target/i386/kvm/tdx.c | 118 +++++++++++++++++++++++++++++++++++++++++- >> target/i386/kvm/tdx.h | 3 ++ >> 3 files changed, 134 insertions(+), 3 deletions(-) >> >> diff --git a/qapi/qom.json b/qapi/qom.json >> index 8740626c4ee6..a53000ca6fb4 100644 >> --- a/qapi/qom.json >> +++ b/qapi/qom.json >> @@ -1060,11 +1060,25 @@ >> # pages. Some guest OS (e.g., Linux TD guest) may require this to >> # be set, otherwise they refuse to boot. >> # >> +# @mrconfigid: ID for non-owner-defined configuration of the guest TD, >> +# e.g., run-time or OS configuration (base64 encoded SHA384 digest). >> +# Defaults to all zeros. >> +# >> +# @mrowner: ID for the guest TD’s owner (base64 encoded SHA384 digest). >> +# Defaults to all zeros. >> +# >> +# @mrownerconfig: ID for owner-defined configuration of the guest TD, >> +# e.g., specific to the workload rather than the run-time or OS >> +# (base64 encoded SHA384 digest). Defaults to all zeros. > > All three members are IDs, but only the first one has "id" in its name. > Odd. Any particular reason for that? > >> +# >> # Since: 10.0 >> ## >> { 'struct': 'TdxGuestProperties', >> 'data': { '*attributes': 'uint64', >> - '*sept-ve-disable': 'bool' } } >> + '*sept-ve-disable': 'bool', >> + '*mrconfigid': 'str', >> + '*mrowner': 'str', >> + '*mrownerconfig': 'str' } } > > The member names are abbreviations all run together, wheras QAPI/QMP > favors words-separated-with-dashes. If you invented them, please change > them to QAPI/QMP style. If they are established TDX terminology, keep > them as they are, but please show us your evidence. The names are defined in TDX spec. Table 3.13 "TD_PARAMS definition" in TDX Module ABI spec[1]. And they are used for attestation, please refer to section 12 "Measurement and Attestation" in TDX Module Base spec[2]. [1] https://cdrdv2.intel.com/v1/dl/getContent/733579 [2] https://cdrdv2.intel.com/v1/dl/getContent/733575 >> >> ## >> # @ThreadContextProperties: > > [...] >
On 1/24/2025 9:20 PM, Xiaoyao Li wrote: > Validate TD attributes with tdx_caps that only supported bits arer > allowed by KVM. > > Besides, sanity check the attribute bits that have not been supported by > QEMU yet. e.g., debug bit, it will be allowed in the future when debug > TD support lands in QEMU. This patches got squashed with next one "i386/tdx: Support user configurable mrconfigid/mrowner/mrownerconfig" in v6 by accident. I'll fix it in the next version. > Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com> > Acked-by: Gerd Hoffmann <kraxel@redhat.com> > --- > Changes in v7: > - Define TDX_SUPPORTED_TD_ATTRS as QEMU supported mask, to validates > user's request. (Rick) > > Changes in v3: > - using error_setg() for error report; (Daniel) > --- > qapi/qom.json | 16 +++++- > target/i386/kvm/tdx.c | 118 +++++++++++++++++++++++++++++++++++++++++- > target/i386/kvm/tdx.h | 3 ++ > 3 files changed, 134 insertions(+), 3 deletions(-) > > diff --git a/qapi/qom.json b/qapi/qom.json > index 8740626c4ee6..a53000ca6fb4 100644 > --- a/qapi/qom.json > +++ b/qapi/qom.json > @@ -1060,11 +1060,25 @@ > # pages. Some guest OS (e.g., Linux TD guest) may require this to > # be set, otherwise they refuse to boot. > # > +# @mrconfigid: ID for non-owner-defined configuration of the guest TD, > +# e.g., run-time or OS configuration (base64 encoded SHA384 digest). > +# Defaults to all zeros. > +# > +# @mrowner: ID for the guest TD’s owner (base64 encoded SHA384 digest). > +# Defaults to all zeros. > +# > +# @mrownerconfig: ID for owner-defined configuration of the guest TD, > +# e.g., specific to the workload rather than the run-time or OS > +# (base64 encoded SHA384 digest). Defaults to all zeros. > +# > # Since: 10.0 > ## > { 'struct': 'TdxGuestProperties', > 'data': { '*attributes': 'uint64', > - '*sept-ve-disable': 'bool' } } > + '*sept-ve-disable': 'bool', > + '*mrconfigid': 'str', > + '*mrowner': 'str', > + '*mrownerconfig': 'str' } } > > ## > # @ThreadContextProperties: > diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c > index 653942d83bcb..ed843af1d0b6 100644 > --- a/target/i386/kvm/tdx.c > +++ b/target/i386/kvm/tdx.c > @@ -11,17 +11,24 @@ > > #include "qemu/osdep.h" > #include "qemu/error-report.h" > +#include "qemu/base64.h" > #include "qapi/error.h" > #include "qom/object_interfaces.h" > +#include "crypto/hash.h" > > #include "hw/i386/x86.h" > #include "kvm_i386.h" > #include "tdx.h" > > +#define TDX_TD_ATTRIBUTES_DEBUG BIT_ULL(0) > #define TDX_TD_ATTRIBUTES_SEPT_VE_DISABLE BIT_ULL(28) > #define TDX_TD_ATTRIBUTES_PKS BIT_ULL(30) > #define TDX_TD_ATTRIBUTES_PERFMON BIT_ULL(63) > > +#define TDX_SUPPORTED_TD_ATTRS (TDX_TD_ATTRIBUTES_SEPT_VE_DISABLE |\ > + TDX_TD_ATTRIBUTES_PKS | \ > + TDX_TD_ATTRIBUTES_PERFMON) > + > static TdxGuest *tdx_guest; > > static struct kvm_tdx_capabilities *tdx_caps; > @@ -153,13 +160,33 @@ static int tdx_kvm_type(X86ConfidentialGuest *cg) > return KVM_X86_TDX_VM; > } > > -static void setup_td_guest_attributes(X86CPU *x86cpu) > +static int tdx_validate_attributes(TdxGuest *tdx, Error **errp) > +{ > + if ((tdx->attributes & ~tdx_caps->supported_attrs)) { > + error_setg(errp, "Invalid attributes 0x%lx for TDX VM " > + "(KVM supported: 0x%llx)", tdx->attributes, > + tdx_caps->supported_attrs); > + return -1; > + } > + > + if (tdx->attributes & ~TDX_SUPPORTED_TD_ATTRS) { > + warn_report("Some QEMU unsupported TD attribute bits being requested:" > + "requested: 0x%lx QEMU supported: 0x%llx", > + tdx->attributes, TDX_SUPPORTED_TD_ATTRS); > + } > + > + return 0; > +} > + > +static int setup_td_guest_attributes(X86CPU *x86cpu, Error **errp) > { > CPUX86State *env = &x86cpu->env; > > tdx_guest->attributes |= (env->features[FEAT_7_0_ECX] & CPUID_7_0_ECX_PKS) ? > TDX_TD_ATTRIBUTES_PKS : 0; > tdx_guest->attributes |= x86cpu->enable_pmu ? TDX_TD_ATTRIBUTES_PERFMON : 0; > + > + return tdx_validate_attributes(tdx_guest, errp); > } > > static int setup_td_xfam(X86CPU *x86cpu, Error **errp) > @@ -214,6 +241,7 @@ int tdx_pre_create_vcpu(CPUState *cpu, Error **errp) > CPUX86State *env = &x86cpu->env; > g_autofree struct kvm_tdx_init_vm *init_vm = NULL; > Error *local_err = NULL; > + size_t data_len; > int retry = 10000; > int r = 0; > > @@ -225,7 +253,40 @@ int tdx_pre_create_vcpu(CPUState *cpu, Error **errp) > init_vm = g_malloc0(sizeof(struct kvm_tdx_init_vm) + > sizeof(struct kvm_cpuid_entry2) * KVM_MAX_CPUID_ENTRIES); > > - setup_td_guest_attributes(x86cpu); > + if (tdx_guest->mrconfigid) { > + g_autofree uint8_t *data = qbase64_decode(tdx_guest->mrconfigid, > + strlen(tdx_guest->mrconfigid), &data_len, errp); > + if (!data || data_len != QCRYPTO_HASH_DIGEST_LEN_SHA384) { > + error_setg(errp, "TDX: failed to decode mrconfigid"); > + return -1; > + } > + memcpy(init_vm->mrconfigid, data, data_len); > + } > + > + if (tdx_guest->mrowner) { > + g_autofree uint8_t *data = qbase64_decode(tdx_guest->mrowner, > + strlen(tdx_guest->mrowner), &data_len, errp); > + if (!data || data_len != QCRYPTO_HASH_DIGEST_LEN_SHA384) { > + error_setg(errp, "TDX: failed to decode mrowner"); > + return -1; > + } > + memcpy(init_vm->mrowner, data, data_len); > + } > + > + if (tdx_guest->mrownerconfig) { > + g_autofree uint8_t *data = qbase64_decode(tdx_guest->mrownerconfig, > + strlen(tdx_guest->mrownerconfig), &data_len, errp); > + if (!data || data_len != QCRYPTO_HASH_DIGEST_LEN_SHA384) { > + error_setg(errp, "TDX: failed to decode mrownerconfig"); > + return -1; > + } > + memcpy(init_vm->mrownerconfig, data, data_len); > + } > + > + r = setup_td_guest_attributes(x86cpu, errp); > + if (r) { > + return r; > + } > > r = setup_td_xfam(x86cpu, errp); > if (r) { > @@ -283,6 +344,51 @@ static void tdx_guest_set_sept_ve_disable(Object *obj, bool value, Error **errp) > } > } > > +static char *tdx_guest_get_mrconfigid(Object *obj, Error **errp) > +{ > + TdxGuest *tdx = TDX_GUEST(obj); > + > + return g_strdup(tdx->mrconfigid); > +} > + > +static void tdx_guest_set_mrconfigid(Object *obj, const char *value, Error **errp) > +{ > + TdxGuest *tdx = TDX_GUEST(obj); > + > + g_free(tdx->mrconfigid); > + tdx->mrconfigid = g_strdup(value); > +} > + > +static char *tdx_guest_get_mrowner(Object *obj, Error **errp) > +{ > + TdxGuest *tdx = TDX_GUEST(obj); > + > + return g_strdup(tdx->mrowner); > +} > + > +static void tdx_guest_set_mrowner(Object *obj, const char *value, Error **errp) > +{ > + TdxGuest *tdx = TDX_GUEST(obj); > + > + g_free(tdx->mrowner); > + tdx->mrowner = g_strdup(value); > +} > + > +static char *tdx_guest_get_mrownerconfig(Object *obj, Error **errp) > +{ > + TdxGuest *tdx = TDX_GUEST(obj); > + > + return g_strdup(tdx->mrownerconfig); > +} > + > +static void tdx_guest_set_mrownerconfig(Object *obj, const char *value, Error **errp) > +{ > + TdxGuest *tdx = TDX_GUEST(obj); > + > + g_free(tdx->mrownerconfig); > + tdx->mrownerconfig = g_strdup(value); > +} > + > /* tdx guest */ > OBJECT_DEFINE_TYPE_WITH_INTERFACES(TdxGuest, > tdx_guest, > @@ -306,6 +412,14 @@ static void tdx_guest_init(Object *obj) > object_property_add_bool(obj, "sept-ve-disable", > tdx_guest_get_sept_ve_disable, > tdx_guest_set_sept_ve_disable); > + object_property_add_str(obj, "mrconfigid", > + tdx_guest_get_mrconfigid, > + tdx_guest_set_mrconfigid); > + object_property_add_str(obj, "mrowner", > + tdx_guest_get_mrowner, tdx_guest_set_mrowner); > + object_property_add_str(obj, "mrownerconfig", > + tdx_guest_get_mrownerconfig, > + tdx_guest_set_mrownerconfig); > } > > static void tdx_guest_finalize(Object *obj) > diff --git a/target/i386/kvm/tdx.h b/target/i386/kvm/tdx.h > index 4e2b5c61ff5b..e472b11fb0dd 100644 > --- a/target/i386/kvm/tdx.h > +++ b/target/i386/kvm/tdx.h > @@ -24,6 +24,9 @@ typedef struct TdxGuest { > bool initialized; > uint64_t attributes; /* TD attributes */ > uint64_t xfam; > + char *mrconfigid; /* base64 encoded sha348 digest */ > + char *mrowner; /* base64 encoded sha348 digest */ > + char *mrownerconfig; /* base64 encoded sha348 digest */ > } TdxGuest; > > #ifdef CONFIG_TDX
diff --git a/qapi/qom.json b/qapi/qom.json index 8740626c4ee6..a53000ca6fb4 100644 --- a/qapi/qom.json +++ b/qapi/qom.json @@ -1060,11 +1060,25 @@ # pages. Some guest OS (e.g., Linux TD guest) may require this to # be set, otherwise they refuse to boot. # +# @mrconfigid: ID for non-owner-defined configuration of the guest TD, +# e.g., run-time or OS configuration (base64 encoded SHA384 digest). +# Defaults to all zeros. +# +# @mrowner: ID for the guest TD’s owner (base64 encoded SHA384 digest). +# Defaults to all zeros. +# +# @mrownerconfig: ID for owner-defined configuration of the guest TD, +# e.g., specific to the workload rather than the run-time or OS +# (base64 encoded SHA384 digest). Defaults to all zeros. +# # Since: 10.0 ## { 'struct': 'TdxGuestProperties', 'data': { '*attributes': 'uint64', - '*sept-ve-disable': 'bool' } } + '*sept-ve-disable': 'bool', + '*mrconfigid': 'str', + '*mrowner': 'str', + '*mrownerconfig': 'str' } } ## # @ThreadContextProperties: diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index 653942d83bcb..ed843af1d0b6 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -11,17 +11,24 @@ #include "qemu/osdep.h" #include "qemu/error-report.h" +#include "qemu/base64.h" #include "qapi/error.h" #include "qom/object_interfaces.h" +#include "crypto/hash.h" #include "hw/i386/x86.h" #include "kvm_i386.h" #include "tdx.h" +#define TDX_TD_ATTRIBUTES_DEBUG BIT_ULL(0) #define TDX_TD_ATTRIBUTES_SEPT_VE_DISABLE BIT_ULL(28) #define TDX_TD_ATTRIBUTES_PKS BIT_ULL(30) #define TDX_TD_ATTRIBUTES_PERFMON BIT_ULL(63) +#define TDX_SUPPORTED_TD_ATTRS (TDX_TD_ATTRIBUTES_SEPT_VE_DISABLE |\ + TDX_TD_ATTRIBUTES_PKS | \ + TDX_TD_ATTRIBUTES_PERFMON) + static TdxGuest *tdx_guest; static struct kvm_tdx_capabilities *tdx_caps; @@ -153,13 +160,33 @@ static int tdx_kvm_type(X86ConfidentialGuest *cg) return KVM_X86_TDX_VM; } -static void setup_td_guest_attributes(X86CPU *x86cpu) +static int tdx_validate_attributes(TdxGuest *tdx, Error **errp) +{ + if ((tdx->attributes & ~tdx_caps->supported_attrs)) { + error_setg(errp, "Invalid attributes 0x%lx for TDX VM " + "(KVM supported: 0x%llx)", tdx->attributes, + tdx_caps->supported_attrs); + return -1; + } + + if (tdx->attributes & ~TDX_SUPPORTED_TD_ATTRS) { + warn_report("Some QEMU unsupported TD attribute bits being requested:" + "requested: 0x%lx QEMU supported: 0x%llx", + tdx->attributes, TDX_SUPPORTED_TD_ATTRS); + } + + return 0; +} + +static int setup_td_guest_attributes(X86CPU *x86cpu, Error **errp) { CPUX86State *env = &x86cpu->env; tdx_guest->attributes |= (env->features[FEAT_7_0_ECX] & CPUID_7_0_ECX_PKS) ? TDX_TD_ATTRIBUTES_PKS : 0; tdx_guest->attributes |= x86cpu->enable_pmu ? TDX_TD_ATTRIBUTES_PERFMON : 0; + + return tdx_validate_attributes(tdx_guest, errp); } static int setup_td_xfam(X86CPU *x86cpu, Error **errp) @@ -214,6 +241,7 @@ int tdx_pre_create_vcpu(CPUState *cpu, Error **errp) CPUX86State *env = &x86cpu->env; g_autofree struct kvm_tdx_init_vm *init_vm = NULL; Error *local_err = NULL; + size_t data_len; int retry = 10000; int r = 0; @@ -225,7 +253,40 @@ int tdx_pre_create_vcpu(CPUState *cpu, Error **errp) init_vm = g_malloc0(sizeof(struct kvm_tdx_init_vm) + sizeof(struct kvm_cpuid_entry2) * KVM_MAX_CPUID_ENTRIES); - setup_td_guest_attributes(x86cpu); + if (tdx_guest->mrconfigid) { + g_autofree uint8_t *data = qbase64_decode(tdx_guest->mrconfigid, + strlen(tdx_guest->mrconfigid), &data_len, errp); + if (!data || data_len != QCRYPTO_HASH_DIGEST_LEN_SHA384) { + error_setg(errp, "TDX: failed to decode mrconfigid"); + return -1; + } + memcpy(init_vm->mrconfigid, data, data_len); + } + + if (tdx_guest->mrowner) { + g_autofree uint8_t *data = qbase64_decode(tdx_guest->mrowner, + strlen(tdx_guest->mrowner), &data_len, errp); + if (!data || data_len != QCRYPTO_HASH_DIGEST_LEN_SHA384) { + error_setg(errp, "TDX: failed to decode mrowner"); + return -1; + } + memcpy(init_vm->mrowner, data, data_len); + } + + if (tdx_guest->mrownerconfig) { + g_autofree uint8_t *data = qbase64_decode(tdx_guest->mrownerconfig, + strlen(tdx_guest->mrownerconfig), &data_len, errp); + if (!data || data_len != QCRYPTO_HASH_DIGEST_LEN_SHA384) { + error_setg(errp, "TDX: failed to decode mrownerconfig"); + return -1; + } + memcpy(init_vm->mrownerconfig, data, data_len); + } + + r = setup_td_guest_attributes(x86cpu, errp); + if (r) { + return r; + } r = setup_td_xfam(x86cpu, errp); if (r) { @@ -283,6 +344,51 @@ static void tdx_guest_set_sept_ve_disable(Object *obj, bool value, Error **errp) } } +static char *tdx_guest_get_mrconfigid(Object *obj, Error **errp) +{ + TdxGuest *tdx = TDX_GUEST(obj); + + return g_strdup(tdx->mrconfigid); +} + +static void tdx_guest_set_mrconfigid(Object *obj, const char *value, Error **errp) +{ + TdxGuest *tdx = TDX_GUEST(obj); + + g_free(tdx->mrconfigid); + tdx->mrconfigid = g_strdup(value); +} + +static char *tdx_guest_get_mrowner(Object *obj, Error **errp) +{ + TdxGuest *tdx = TDX_GUEST(obj); + + return g_strdup(tdx->mrowner); +} + +static void tdx_guest_set_mrowner(Object *obj, const char *value, Error **errp) +{ + TdxGuest *tdx = TDX_GUEST(obj); + + g_free(tdx->mrowner); + tdx->mrowner = g_strdup(value); +} + +static char *tdx_guest_get_mrownerconfig(Object *obj, Error **errp) +{ + TdxGuest *tdx = TDX_GUEST(obj); + + return g_strdup(tdx->mrownerconfig); +} + +static void tdx_guest_set_mrownerconfig(Object *obj, const char *value, Error **errp) +{ + TdxGuest *tdx = TDX_GUEST(obj); + + g_free(tdx->mrownerconfig); + tdx->mrownerconfig = g_strdup(value); +} + /* tdx guest */ OBJECT_DEFINE_TYPE_WITH_INTERFACES(TdxGuest, tdx_guest, @@ -306,6 +412,14 @@ static void tdx_guest_init(Object *obj) object_property_add_bool(obj, "sept-ve-disable", tdx_guest_get_sept_ve_disable, tdx_guest_set_sept_ve_disable); + object_property_add_str(obj, "mrconfigid", + tdx_guest_get_mrconfigid, + tdx_guest_set_mrconfigid); + object_property_add_str(obj, "mrowner", + tdx_guest_get_mrowner, tdx_guest_set_mrowner); + object_property_add_str(obj, "mrownerconfig", + tdx_guest_get_mrownerconfig, + tdx_guest_set_mrownerconfig); } static void tdx_guest_finalize(Object *obj) diff --git a/target/i386/kvm/tdx.h b/target/i386/kvm/tdx.h index 4e2b5c61ff5b..e472b11fb0dd 100644 --- a/target/i386/kvm/tdx.h +++ b/target/i386/kvm/tdx.h @@ -24,6 +24,9 @@ typedef struct TdxGuest { bool initialized; uint64_t attributes; /* TD attributes */ uint64_t xfam; + char *mrconfigid; /* base64 encoded sha348 digest */ + char *mrowner; /* base64 encoded sha348 digest */ + char *mrownerconfig; /* base64 encoded sha348 digest */ } TdxGuest; #ifdef CONFIG_TDX