[kvm:master 22/22] arch/x86/kvm/x86.c:992:19: error: unused function 'kvm_guest_supported_xfd'

[kvm:master 22/22] arch/x86/kvm/x86.c:992:19: error: unused function 'kvm_guest_supported_xfd'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/virt/kvm/kvm.git master
head:   988896bb61827345c6d074dd5f2af1b7b008193f
commit: 988896bb61827345c6d074dd5f2af1b7b008193f [22/22] x86/kvm/fpu: Remove kvm_vcpu_arch.guest_supported_xcr0
config: i386-randconfig-a002 (https://download.01.org/0day-ci/archive/20220218/202202180700.dnGoHs4Z-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/virt/kvm/kvm.git/commit/?id=988896bb61827345c6d074dd5f2af1b7b008193f
        git remote add kvm https://git.kernel.org/pub/scm/virt/kvm/kvm.git
        git fetch --no-tags kvm master
        git checkout 988896bb61827345c6d074dd5f2af1b7b008193f
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> arch/x86/kvm/x86.c:992:19: error: unused function 'kvm_guest_supported_xfd' [-Werror,-Wunused-function]
   static inline u64 kvm_guest_supported_xfd(struct kvm_vcpu *vcpu)
                     ^
   arch/x86/kvm/x86.c:2364:19: error: unused function 'gtod_is_based_on_tsc' [-Werror,-Wunused-function]
   static inline int gtod_is_based_on_tsc(int mode)
                     ^
   2 errors generated.


vim +/kvm_guest_supported_xfd +992 arch/x86/kvm/x86.c

   991	
 > 992	static inline u64 kvm_guest_supported_xfd(struct kvm_vcpu *vcpu)
   993	{
   994		return kvm_guest_supported_xcr0(vcpu) & XFEATURE_MASK_USER_DYNAMIC;
   995	}
   996	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Re: [kvm:master 22/22] arch/x86/kvm/x86.c:992:19: error: unused function 'kvm_guest_supported_xfd'

[Leonardo Bras Soares Passos]

Hello Paolo,

On Thu, Feb 17, 2022 at 8:13 PM kernel test robot <lkp@intel.com> wrote:
>
> tree:   https://git.kernel.org/pub/scm/virt/kvm/kvm.git master
> head:   988896bb61827345c6d074dd5f2af1b7b008193f
> commit: 988896bb61827345c6d074dd5f2af1b7b008193f [22/22] x86/kvm/fpu: Remove kvm_vcpu_arch.guest_supported_xcr0
> config: i386-randconfig-a002 (https://download.01.org/0day-ci/archive/20220218/202202180700.dnGoHs4Z-lkp@intel.com/config)
> compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e)
> reproduce (this is a W=1 build):
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # https://git.kernel.org/pub/scm/virt/kvm/kvm.git/commit/?id=988896bb61827345c6d074dd5f2af1b7b008193f
>         git remote add kvm https://git.kernel.org/pub/scm/virt/kvm/kvm.git
>         git fetch --no-tags kvm master
>         git checkout 988896bb61827345c6d074dd5f2af1b7b008193f
>         # save the config file to linux build tree
>         mkdir build_dir
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
>
> All errors (new ones prefixed by >>):
>
> >> arch/x86/kvm/x86.c:992:19: error: unused function 'kvm_guest_supported_xfd' [-Werror,-Wunused-function]
>    static inline u64 kvm_guest_supported_xfd(struct kvm_vcpu *vcpu)

It seems to fail under "non-x86_64" x86 configs, since
kvm_guest_supported_xfd()  is called only in x86_64 code.

I will send a new version for this patchset only, incorporating the
ifdefs in this function.
Rationale:
If MSR_IA32_XFD and MSR_IA32_XFD_ERR are in x86_64-only code, it only
makes sense that XFD is an x86_64 only feature.

>                      ^
>    arch/x86/kvm/x86.c:2364:19: error: unused function 'gtod_is_based_on_tsc' [-Werror,-Wunused-function]
>    static inline int gtod_is_based_on_tsc(int mode)
>                      ^
>    2 errors generated.

The same thing happens for this one (which is unrelated to my
patchset), but will require the same fix.
I will send an additional patch fixing this one also.

Is that ok?

Best regards,
Leo