Hi, This two patches support physical CPU hotplug, so that we can make blk-mq scale well when new physical CPU is added or removed, and this use case is normal for VM world. Also this patchset fixes the following warning reported by Christian Borntraeger: https://marc.info/?l=linux-block&m=151092973417143&w=2 Christoph Hellwig (2): genirq/affinity: assign vectors to all possible CPUs blk-mq: simplify queue mapping & schedule with each possisble CPU block/blk-mq.c | 19 ++++++++----------- kernel/irq/affinity.c | 30 +++++++++++++++--------------- 2 files changed, 23 insertions(+), 26 deletions(-) -- 2.9.5