On Sun, Oct 13, 2013 at 01:38:57PM +0530, Raghavendra K T wrote: > On 10/09/2013 02:33 PM, Raghavendra K T wrote: > >We use jump label to enable pv-spinlock. With the changes in > >(442e0973e927 Merge branch 'x86/jumplabel'), the jump label behaviour has changed > >that would result in evntual hang of the VM since we would end up in a situation > >where slowpath locks would halt the vcpus but we will not be able to wakeup the > >vcpu by lock releaser using unlock kick. > > > >Similar problem in Xen and more detailed description is available in > >a945928ea270 (xen: Do not enable spinlocks before jump_label_init() has executed) > > > >This patch splits kvm_spinlock_init to separate jump label changes with pvops > >patching and also make jump label enabling after jump_label_init(). > > > >Signed-off-by: Raghavendra K T <raghavendra.kt@xxxxxxxxxxxxxxxxxx> > > Ingo, > Could you please take this fix? > This is reviewed by Paolo and Steven. It's KVM, I'll take it. -- Gleb. -- 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
