* Avi Kivity <avi at qumranet.com> wrote: > > my T60 laptop does not resume correctly due to KVM attempting to > > send an IPI to a CPU that might be down (or not up yet). (Doing so > > also triggers the send_IPI_mask_bitmask() warning in > > arch/i386/kernel/smp.c, line 732.) > > > >with this fix applied my laptop does not hang during resume. > > > >[ KVM will have to disable/enable virtualization on the CPU itself > > that goes down / comes up, not via an IPI sent from the requesting > > CPU. ] > That is already CPU_ONLINE in my tree (and in the pull request sent to > Linus a couple of days ago). that solves the resume problem - but doesnt solve the CPU_DEAD issue of sending an IPI to an already offline CPU. Might be a better idea to do it in CPU_DOWN_PREPARE? (and then to also add a CPU_DOWN_FAILED branch?) Ingo
