On Mon, May 19, 2014 at 11:15:15PM +0800, Chen Jie wrote: > 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. In that case we could make the use of DI/EI depend on a new errata flag in war.h or similar. Ralf
