Re: [intel-tdx:tdx_kvm_dev-2024-05-30 59/115] arch/x86/kvm/vmx/main.c:224:10: error: call to undeclared function 'tdx_gmem_private_max_mapping_level'; ISO C99 and later do not support implicit function declarations

["Edgecombe, Rick P" <rick.p.edgecombe@intel.com>]

On Sat, 2024-06-01 at 02:03 +0800, kernel test robot wrote:
> tree:   https://github.com/intel/tdx.git tdx_kvm_dev-2024-05-30
> head:   538d25a4d08a3dc487fc9be78bef09105ef54e27
> commit: a3c36efd448bd3b25ee0cf2672f177ff603a6be6 [59/115] KVM: TDX: TDP MMU
> TDX support
> config: x86_64-rhel-8.3-rust
> (https://download.01.org/0day-ci/archive/20240601/202406010133.Yu2O9Air-lkp@in
> tel.com/config)
> compiler: clang version 18.1.5
> (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1
> )
> reproduce (this is a W=1 build):
> (https://download.01.org/0day-ci/archive/20240601/202406010133.Yu2O9Air-lkp@in
> tel.com/reproduce)
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version
> of
> the same patch/commit), kindly add following tags
> > Reported-by: kernel test robot <lkp@intel.com>
> > Closes:
> > https://lore.kernel.org/oe-kbuild-all/202406010133.Yu2O9Air-lkp@intel.com/
> 
> All errors (new ones prefixed by >>):
> 
> > > arch/x86/kvm/vmx/main.c:224:10: error: call to undeclared function
> > > 'tdx_gmem_private_max_mapping_level'; ISO C99 and later do not support
> > > implicit function declarations [-Wimplicit-function-declaration]
>      224 |                 return tdx_gmem_private_max_mapping_level(kvm,
> pfn);
>          |                        ^
>    arch/x86/kvm/vmx/main.c:224:10: note: did you mean
> 'vt_gmem_private_max_mapping_level'?
>    arch/x86/kvm/vmx/main.c:221:12: note: 'vt_gmem_private_max_mapping_level'
> declared here
>      221 | static int vt_gmem_private_max_mapping_level(struct kvm *kvm,
> kvm_pfn_t pfn)
>          |            ^
>      222 | {
>      223 |         if (is_td(kvm))
>      224 |                 return tdx_gmem_private_max_mapping_level(kvm,
> pfn);
>          |                        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>          |                        vt_gmem_private_max_mapping_level
>    1 error generated.

Isaku,

We are just missing a definition for !CONFIG_INTEL_TDX_HOST. I'll just add one
in.