Just like the AMD A10-5800K "Trinity" APU that was the focus of many Phoronix benchmarks in recent weeks, the AMD FX-8350 "Vishera" CPU worked just fine under Linux. There were no compatibility problems to speak of; the only minor issue was that the there was no working hardware monitoring driver for the Linux kernel that supported reading the core temperature on the Piledriver cores. Not many Linux users will actually need this support as a day-to-day requirement, but hopefully soon the AMD Linux kernel engineers will enable the CPU temperature monitoring support.
The AMD FX-8360 was tested from the ASUS Crosshair V Formula motherboard, the same one that's been used at Phoronix since the AMD FX-8150 Bulldozer review from last year. As such, there weren't any motherboard issues to worry about either and it makes for a straightforward comparison against the original Bulldozer CPU.
For this initial AMD FX-8350 benchmarking under Linux there was a large spectrum of open-source CPU benchmarks carried out from Ubuntu 12.10. The processors used for this comparison were on the Intel side a Core i5 2400S, Core i5 2500K, Core i5 3470, and Core i7 3770K. On the AMD side for this comparison was an AMD A10-5800K "Trinity" APU and the previous-generation AMD FX-8150 "Bulldozer". The RAM, disk, and other components were maintained the same between processors where aside from needing to swap out the motherboard when needing a different CPU socket. The Ubuntu 12.10 installation was using its stock Linux 3.5 kernel.