[PATCH v1 05/13] hyperv: fix hv_input_get_system_property layout for SNP status

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