On Fri, Jan 24, 2020 at 09:17:05PM -0500, Waiman Long wrote: > On 1/24/20 8:59 PM, Waiman Long wrote: > >> You called it! I will play with QEMU's -numa argument to see if I can get > >> CNA to run for me. Please accept my apologies for the false alarm. > >> > >> Thanx, Paul > >> > > CNA is not currently supported in a VM guest simply because the numa > > information is not reliable. You will have to run it on baremetal to > > test it. Sorry for that. > > Correction. There is a command line option to force CNA lock to be used > in a VM. Use the "numa_spinlock=on" boot command line parameter. As I understand it, I need to use a series of -numa arguments to qemu combined with the numa_spinlock=on (or =1) on the kernel command line. If the kernel thinks that there is only one NUMA node, it appears to avoid doing CNA. Correct? Thanx, Paul
