On Fri 2019-09-13 14:04:57, Greg Kroah-Hartman wrote: > [ Upstream commit 87ee613d076351950b74383215437f841ebbeb75 ] > > In most common cases VP index of a vcpu matches its vcpu index. Userspace is, however, > free to set any mapping it wishes and we need to account for that when we need to find a > vCPU with a particular VP index. To keep search algorithms optimal in both cases > introduce 'num_mismatched_vp_indexes' counter showing how many vCPUs with mismatching VP > index we have. In case the counter is zero we can assume vp_index == vcpu_idx. I don't see why this is stable material. > u64 hv_reenlightenment_control; > u64 hv_tsc_emulation_control; > u64 hv_tsc_emulation_status; > + > + /* How many vCPUs have VP index != vCPU index */ > + atomic_t num_mismatched_vp_indexes; > }; > It adds a write-only variable ... Best regards, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
