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charset="utf-8" Not sync the SME sysregs if SME2 is not available. Disable SME when nested virt is on. Signed-off-by: Mohamed Mediouni --- target/arm/hvf/hvf.c | 29 +++++++++++++++++++---------- target/arm/hvf_arm.h | 5 +++++ 2 files changed, 24 insertions(+), 10 deletions(-) diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c index 8d1333cbb4..cb05db2358 100644 --- a/target/arm/hvf/hvf.c +++ b/target/arm/hvf/hvf.c @@ -1163,6 +1163,9 @@ static bool hvf_arm_get_host_cpu_features(ARMHostCPUF= eatures *ahcf) =20 if (hvf_nested_virt_enabled()) { FIELD_DP64_IDREG(&host_isar, ID_AA64DFR0, PMUVER, 0x1); + /* SME is not implemented with nested virt on the Apple side */ + SET_IDREG(&host_isar, ID_AA64PFR1, + GET_IDREG(&host_isar, ID_AA64PFR1) & ~R_ID_AA64PFR1_SME_MASK= ); } =20 ahcf->isar =3D host_isar; @@ -1370,16 +1373,22 @@ int hvf_arch_init_vcpu(CPUState *cpu) arm_cpu->cpreg_indexes[sregs_cnt++] =3D kvm_id; } } - if (__builtin_available(macOS 15.2, *)) { - for (i =3D 0; i < ARRAY_SIZE(hvf_sreg_list_sme2); i++) { - hv_sys_reg_t hvf_id =3D hvf_sreg_list_sme2[i].sreg; - uint64_t kvm_id =3D HVF_TO_KVMID(hvf_id); - uint32_t key =3D kvm_to_cpreg_id(kvm_id); - const ARMCPRegInfo *ri =3D get_arm_cp_reginfo(arm_cpu->cp_regs= , key); - - if (ri) { - assert(!(ri->type & ARM_CP_NO_RAW)); - arm_cpu->cpreg_indexes[sregs_cnt++] =3D kvm_id; + if (hvf_arm_sme2_supported()) { + /* + * Clang doesn't allow us to combine the two checks together. + * -Wunsupported-availability-guard + */ + if (__builtin_available(macOS 15.2, *)) { + for (i =3D 0; i < ARRAY_SIZE(hvf_sreg_list_sme2); i++) { + hv_sys_reg_t hvf_id =3D hvf_sreg_list_sme2[i].sreg; + uint64_t kvm_id =3D HVF_TO_KVMID(hvf_id); + uint32_t key =3D kvm_to_cpreg_id(kvm_id); + const ARMCPRegInfo *ri =3D get_arm_cp_reginfo(arm_cpu->cp_= regs, key); + + if (ri) { + assert(!(ri->type & ARM_CP_NO_RAW)); + arm_cpu->cpreg_indexes[sregs_cnt++] =3D kvm_id; + } } } /* diff --git a/target/arm/hvf_arm.h b/target/arm/hvf_arm.h index 6b1c3b9792..9cb58ad9ab 100644 --- a/target/arm/hvf_arm.h +++ b/target/arm/hvf_arm.h @@ -11,6 +11,7 @@ #ifndef QEMU_HVF_ARM_H #define QEMU_HVF_ARM_H =20 +#include "system/hvf.h" #include "target/arm/cpu-qom.h" =20 /** @@ -35,6 +36,10 @@ void hvf_arm_set_cpu_features_from_host(ARMCPU *cpu); if (__builtin_available(macOS 15.2, *)) { size_t svl_bytes; hv_return_t result =3D hv_sme_config_get_max_svl_bytes(&svl_by= tes); + /* Nested virt not supported together with SME right now. */ + if (hvf_nested_virt_enabled()) { + return false; + } if (result =3D=3D HV_UNSUPPORTED) { return false; } --=20 2.50.1 (Apple Git-155)