2014-05-20 1:06 GMT+08:00 Ralf Baechle <ralf@xxxxxxxxxxxxxx>: > 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. Thanks for the suggest! Huacai，I think we would try to select MIPS64_R2 for loongson3 processor, and take care of the above bits to see whether it works. -- Regards, - cee1
