>>> On 04.07.16 at 14:47, <cz...@bitdefender.com> wrote: > On 7/4/2016 3:37 PM, Jan Beulich wrote: >>>>> On 30.06.16 at 20:44, <cz...@bitdefender.com> wrote: >>> After trapping a control-register write vm-event and -until- deciding if >>> that >>> write is to be permitted or not (VM_EVENT_FLAG_DENY) and doing the actual >>> write, >>> there cannot and should not be another trapped control-register write event. >> Is that true even for the case where full register state gets updated >> for a vCPU? > > AFAIK, the full register state cannot be updated _at once_, that is: > after each trapped register update monitor_write_data must _always_ be > handled _before reentering the vCPU_.
I'm thinking about operations like VCPUOP_initialise here. Of course operations on current can't possibly update more than one register at a time. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
