On 02/10/2018 12:17, Alexander Shishkin wrote: > Ok, so this is where the host PT is disabled. > > So, my recommendation for this patchset is: we need to address the fact > that we are disabling host PT without telling the host. We need to > either stop doing it or inform the host. I don't think there need to be > any more versions of this patchset until this issue is addressed. If you don't want that effect, do not enable host-guest mode. The default is "off" in fact. I agree that it would be better to inform the host, but I think it's acceptable to proceed with these patches since the mode is strictly opt in (kvm_intel.pt_mode=1). Perfect is the enemy of good, and I'd like to get the "boring" code in first. Luwei, can you document this in patch 4 as requested by Alexander? Thanks, Paolo
