On 18/12/2015 19:10, Peter Hornyack wrote: > On brief inspection of Andrey's patch (I have not been following > closely) it looks like the kvm_hyperv_exit struct that's returned to > userspace contains more data (control, evt_page, and msg_page fields) > than simply the value of the MSR, so would the desired SynIC exit fit > into a general-purpose exit for MSR emulation?
This would be a special case that is used even if the hyperv MSRs are emulated in the kernel. Other exit subcodes than KVM_EXIT_(MSR_)HYPERV_SYNIC would be used for your usecase of for MSR emulation in userspace. Paolo
