On 12/04/16 01:37, Will Deacon wrote: > Our exit/reboot code is a bit of a mess: > > - Both kvm__reboot and kvm_cpu_exit send SIGKVMEXIT to running vcpus > - When vcpu0 exits, the main thread starts executing destructors > (exitcalls) whilst other vcpus may be running > - The pause_lock isn't always held when inspecting is_running for > a vcpu > > This patch attempts to fix these issues by restricting the exit/reboot > path to vcpu0 and the main thread. In particular, a KVM_SYSTEM_EVENT > will signal SIGKVMEXIT to vcpu0, which will join with the main thread > and then tear down the other vcpus before invoking any destructor code. > > Cc: Julien Grall <julien.grall@xxxxxxx> > Cc: Balbir Singh <bsingharora@xxxxxxxxx> > Signed-off-by: Will Deacon <will.deacon@xxxxxxx> > --- > > Balbir -- does this work on ppc? Yes, it does Acked-by: Balbir Singh <bsingharora@xxxxxxxxx> My patch for exit race fixes can be dropped in favour of this change Balbir Singh -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
