On 10/29/2018 02:39 AM, Wanpeng Li wrote: > Interesting, I also implement a version of PTE D Bit based dirty > logging 4 years ago w/o sending to upstream. The PTE D Bit based mode > will switch to write protection mode each time before > KVM_GET_DIRTY_LOG ioctl or just once before the xx_start? > The switch to write-protection mode will be done only when userspace calls the KVM_SET_DIRTY_LOG_MODE IOCTL with KVM_DIRTY_LOG_MODE_WRPROT as the parameter. The general expectation is that userspace will call this only once near the end of the brownout period. Thanks, Junaid
