On 20/09/2017 08:35, Yu Zhang wrote: > > 2 reasons I did not choose to change kvm_cpuid(): 1> like Jim's > comments, kvm_cpuid() will eventually write the *eax - *edx no > matter a cpuid entry is found or not; 2> currently, return value of > kvm_cpuid() is either true when an entry is found or false otherwise. > We can change kvm_cpuid() to check the pointers of GPRs against NULL > and return false immediately. Then the false value would have 2 > different meanings - entry not found, or invalid params. > > Paolo, any suggestion? :-) Radim, has already sent this version to Linus. :) Paolo