On 18/06/2013 11:05, yongcheng.wu@xxxxxxxxxxxxx wrote: > hi, > I have a problem for shadow page table. > When guest set A/D bit of guest pte, should VMM intercept and update(synchronize) A/D bit of spte (shadow pte)? > But in the kvm code, Why did not I see? No. The guest's A/D bits are independent from the host's. When the guest's A bit is zero, the host has 0 in the P bit. When the guest's D bit is zero, the host has 0 in the W bit. Paolo
