From: Wei Hu <[email protected]> The processor-feature selector must sit at offset 8 (property_id + u32 reserved), matching the Microsoft Hypervisor ABI. Upstream 7.1's leaner struct placed it at offset 4, so HVCALL_GET_SYSTEM_PROPERTY(SNP_STATUS) failed and mshv aborted (no /dev/mshv). Restore reserved + u64 union.
Signed-off-by: Wei Hu <[email protected]> --- include/hyperv/hvhdk_mini.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/hyperv/hvhdk_mini.h b/include/hyperv/hvhdk_mini.h index db83fedce243..dd84085c0aff 100644 --- a/include/hyperv/hvhdk_mini.h +++ b/include/hyperv/hvhdk_mini.h @@ -237,8 +237,9 @@ enum hv_dynamic_processor_feature_property { struct hv_input_get_system_property { u32 property_id; /* enum hv_system_property */ + u32 reserved; union { - u32 as_uint32; + u64 as_uint64; #if IS_ENABLED(CONFIG_X86) /* enum hv_dynamic_processor_feature_property */ u32 hv_processor_feature; -- 2.43.0
