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https://github.com/torvalds/linux
23 October 2021, 00:29:24 UTC
Revision 575b255c1663c8fccc41fe965dcac281e3113c65 authored by Valdis Klētnieks on 28 February 2020, 02:49:52 UTC, committed by Paolo Bonzini on 28 February 2020, 09:35:37 UTC 
KVM: x86: allow compiling as non-module with W=1
 
Compile error with CONFIG_KVM_INTEL=y and W=1:

  CC      arch/x86/kvm/vmx/vmx.o
arch/x86/kvm/vmx/vmx.c:68:32: error: 'vmx_cpu_id' defined but not used [-Werror=unused-const-variable=]
   68 | static const struct x86_cpu_id vmx_cpu_id[] = {
      |                                ^~~~~~~~~~
cc1: all warnings being treated as errors

When building with =y, the MODULE_DEVICE_TABLE macro doesn't generate a
reference to the structure (or any code at all).  This makes W=1 compiles
unhappy.

Wrap both in a #ifdef to avoid the issue.

Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
[Do the same for CONFIG_KVM_AMD. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
1 parent 8a9442f
History
Tip revision: 575b255c1663c8fccc41fe965dcac281e3113c65 authored by Valdis Klētnieks on 28 February 2020, 02:49:52 UTC
KVM: x86: allow compiling as non-module with W=1
Tip revision: 575b255
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