On 8/24/2017 9:40 PM, Paolo Bonzini wrote:
On 24/08/2017 14:27, Yu Zhang wrote:diff --git a/arch/x86/kvm/mmu.h b/arch/x86/kvm/mmu.h index 3ed6192..67e7ec2 100644 --- a/arch/x86/kvm/mmu.h +++ b/arch/x86/kvm/mmu.h @@ -48,6 +48,9 @@static inline u64 rsvd_bits(int s, int e){ + if (e < s) + return 0; + return ((1ULL << (e - s + 1)) - 1) << s; }e = s - 1 is already supported; why do you need e <= s - 2?
Sorry? I do not quite understand. When will e = s - 1? Thanks Yu
Paolo
