Cédric Le Goater <c...@kaod.org> writes: > Hello Nikunj, > > On 04/06/2017 12:22 PM, Nikunj A Dadhania wrote: >> The series enables Multi-Threaded TCG on PPC64 >> >> Patch 01: Use atomic_cmpxchg in store conditional >> 02: Handle first write to page during atomic operation >> 03: Generate memory barriers for sync/isync and load/store conditional >> >> Patches are based on ppc-for-2.10 >> >> Tested using following: >> ./ppc64-softmmu/qemu-system-ppc64 -cpu POWER8 -vga none -nographic -machine >> pseries,usb=off -m 2G -smp 8,cores=8,threads=1 -accel tcg,thread=multi >> f23.img > > I tried it with a Ubuntu 16.04.2 guest using stress --cpu 8. It looked > good : the CPU usage of QEMU reached 760% on the host.
Cool. >> Todo: >> * Enable other machine types and PPC32. > > I am quite ignorant on the topic. > Have you looked at what it would take to emulate support of the HW > threads ? We would need to implement msgsndp (doorbell support for IPI between threads of same core) > and the PowerNV machine ? Haven't tried it, should work. Just give a shot, let me know if you see problems. Regards Nikunj
