On Wed, Mar 25, 2020 at 05:08:03PM +0100, Paolo Bonzini wrote: > On 25/03/20 16:57, Randy Dunlap wrote: > >> Randy, can you test it with your compiler? > > Nope, no help. That's the wrong location. > > Need a patch for this: > >>> 24 (only showing one of them here) BUILD_BUG() errors in arch/x86/kvm/cpuid.h > >>> function __cpuid_entry_get_reg(), for the default: case. > > Doh, right. I think the only solution for that one is to degrade it to > WARN_ON(1). I reproduced the error, give me a bit to play with the code to see if the BUILD_BUG can be preserved. I'm curious as to why kvm_cpu_cap_mask() is special, and why it only fails with this config.