Currently, Apple doesn't support the nested virtualisation + SME combination.
Signed-off-by: Mohamed Mediouni <[email protected]> Reviewed-by: Philippe Mathieu-Daudé <[email protected]> --- target/arm/hvf/hvf.c | 5 +++++ target/arm/hvf_arm.h | 5 +++++ 2 files changed, 10 insertions(+) diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c index ceeb61fbc0..51b37b3331 100644 --- a/target/arm/hvf/hvf.c +++ b/target/arm/hvf/hvf.c @@ -1206,6 +1206,11 @@ static bool hvf_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf) FIELD_DP64_IDREG(&host_isar, ID_AA64DFR0, PMUVER, 0x1); } + if (hvf_nested_virt_enabled()) { + /* SME is not implemented with nested virt on the Apple side */ + FIELD_DP64_IDREG(&host_isar, ID_AA64PFR1, SME, 0); + } + ahcf->isar = host_isar; /* diff --git a/target/arm/hvf_arm.h b/target/arm/hvf_arm.h index 8029d48caf..59e19f6e84 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 +#include "system/hvf.h" #include "target/arm/cpu-qom.h" /** @@ -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 = hv_sme_config_get_max_svl_bytes(&svl_bytes); + /* Nested virt not supported together with SME right now. */ + if (hvf_nested_virt_enabled()) { + return false; + } if (result == HV_UNSUPPORTED) { return false; } -- 2.50.1 (Apple Git-155)
