On 23/09/13 21:13, Johnny Hughes wrote: > Do we want to move the Xen4CentOS kernel to new LTS 3.10.x from the > current 3.4.x Kernel? Eventually but I don't see particular need to do this soon. > If so, can we start testing the that kernel build? > > Is someone from Xen.org working on porting the xen specific patches that > are required in the 3.10.x kernel from the ones we have in the 3.4.x > tree in Xen4CentOS? > > The only one I know we need is the blktap module. > > I have created a new spec that builds a kernel with all the Xen > configuration settings (except CONFIG_XEN_BLKDEV_TAP=m) Having I think the blktap patch should just apply with some minor tweaks. We will want to take a hack limiting the maximum order for compound page allocated to 0 to avoid large multi-page skb allocations consuming too much swiotlb resource (and making performance worse). We have just switched XenServer to 3.10 and we are seeing odd user space crashes in a CentOS 6.4 constructed initrd so I would recommend not switching to 3.10 until we understand what is going on here. David