Commit 07ea4ab1 authored by Nathan Chancellor's avatar Nathan Chancellor Committed by Paolo Bonzini

KVM: x86: Fix clang -Wimplicit-fallthrough in do_host_cpuid()

Clang warns:

  arch/x86/kvm/cpuid.c:739:2: error: unannotated fall-through between switch labels [-Werror,-Wimplicit-fallthrough]
          default:
          ^
  arch/x86/kvm/cpuid.c:739:2: note: insert 'break;' to avoid fall-through
          default:
          ^
          break;
  1 error generated.

Clang is a little more pedantic than GCC, which does not warn when
falling through to a case that is just break or return. Clang's version
is more in line with the kernel's own stance in deprecated.rst, which
states that all switch/case blocks must end in either break,
fallthrough, continue, goto, or return. Add the missing break to silence
the warning.

Fixes: f144c49e ("KVM: x86: synthesize CPUID leaf 0x80000021h if useful")
Reported-by: default avatarkernel test robot <lkp@intel.com>
Signed-off-by: default avatarNathan Chancellor <nathan@kernel.org>
Message-Id: <20220322152906.112164-1-nathan@kernel.org>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 70375c2d
......@@ -735,6 +735,7 @@ static struct kvm_cpuid_entry2 *do_host_cpuid(struct kvm_cpuid_array *array,
if (function > READ_ONCE(max_cpuid_80000000))
return entry;
}
break;
default:
break;
......
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