On Mon, Aug 10, 2026 at 12:44:59PM +0000, Wei Hu wrote: > 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]>
This patch exists in upstream as: commit d6f0248f04a96249660591e47fcf37ba98ac7ea3 Author: Wei Liu <[email protected]> AuthorDate: Tue Jun 30 14:57:54 2026 -0700 Commit: Wei Liu <[email protected]> CommitDate: Wed Jul 22 21:58:21 2026 +0000 mshv: fix hv_input_get_system_property struct Keep it in sync with the correct definition. The old code worked by chance. Fixes: e68bda71a2384 ("hyperv: Add new Hyper-V headers in include/hyperv") Cc: [email protected] Signed-off-by: Wei Liu <[email protected]> You can drop this. Wei > --- > 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 >
