Re: [kvm-x86:selftests 1/3] make[1]: *** No rule to make target 'kselftest/kvm/x86_64/cpuid_test.c', needed by 'kselftest/kvm/x86_64/cpuid_test.o'.

[Sean Christopherson <seanjc@google.com>]

On Tue, May 30, 2023, kernel test robot wrote:
> Hi Yu,
> 
> First bad commit (maybe != root cause):

Confirmed that reverting 954c9c3f96698f3af0c22f93a68e3905bc185458 makes the problem
go away.

> tree:   https://github.com/kvm-x86/linux selftests

In case it wasn't obvious, I applied and pushed this to kvm-x86/selftests but
hadn't yet merged it to kvm-x86/next.

> head:   a985a858acff64afaa5cf60e058357034cb14476
> commit: 954c9c3f96698f3af0c22f93a68e3905bc185458 [1/3] KVM: selftests: Add new CFLAGS to generate dependency files
> compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
> reproduce:
>         # https://github.com/kvm-x86/linux/commit/954c9c3f96698f3af0c22f93a68e3905bc185458
>         git remote add kvm-x86 https://github.com/kvm-x86/linux
>         git fetch --no-tags kvm-x86 selftests
>         git checkout 954c9c3f96698f3af0c22f93a68e3905bc185458
>         make O=/tmp/kselftest headers
>         make O=/tmp/kselftest -C tools/testing/selftests
> 
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202305302015.D8PglEU7-lkp@intel.com/
> 
> All errors (new ones prefixed by >>):
> 
>    Makefile:89: *** Cannot find a vmlinux for VMLINUX_BTF at any of "vmlinux vmlinux ../../../../vmlinux /sys/kernel/btf/vmlinux /boot/vmlinux-5.9.0-2-amd64".  Stop.
> >> make[1]: *** No rule to make target 'kselftest/kvm/x86_64/cpuid_test.c', needed by 'kselftest/kvm/x86_64/cpuid_test.o'.

Yu, 

Can you take a look and send v3?  I unfortunately don't have bandwidth to dig
into this.  I'll drop commit 954c9c3f96698f3af0c22f93a68e3905bc185458.