On 05/06/12 14:42, Alexander Graf wrote: > > On 15.05.2012, at 14:15, Christian Borntraeger wrote: > >> From: "Jason J. herne" <jjherne@xxxxxxxxxx> >> >> Enhance the KVM ONE_REG capability within S390 to allow >> getting/setting the following special cpu registers: clock comparator >> and the cpu timer. These are needed for migration. >> >> Signed-off-by: Jason J. herne <jjherne@xxxxxxxxxx> >> Signed-off-by: Christian Borntraeger <borntraeger@xxxxxxxxxx> > > Any other registers we need to expose to user space while we're at it? :) I hope not. Life guest relocation prototyping indicates that we have at least the subset that allows a linux guest to continue. We might need a way for userspace to influence the output of the store system information and store facility list instruction. Dont know, maybe we could use ONEREG even for that purpose. Its on my todo list, but there are too many other things to tidy up. Since this would be interface/ABI I dont want to rush without really understanding what I need for those instruction. Christian -- 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
