2014-05-19 18:02 GMT+08:00 Paul Burton <paul.burton@xxxxxxxxxx>: > On Sun, May 18, 2014 at 10:39:20PM +0800, Huacai Chen wrote: >> Due to Wang Rui's tests, Loongson-3's EI/DI instructions don't have >> correct behaviors, its Status.FR is also different with MIPS64R2. So, >> I don't want to select CPU_MIPS64_R2. > > Out of curiosity, how do ei & di misbehave? In our test, it may cause machine stall if use ei&di in kernel, especially in smp case.