Which exception handler do you want to be nested? If it's not a interrupt handler you can use STI(enable interrupts) orCLI(disable interrupts) after SAVE_ALL for nesting support. They allclear EXL bit in CP0_STATUS register and set the KSU=00. 2007/9/12, zhuzhenhua <zzh.hust@xxxxxxxxx>:> hello, all> i have a mips board, and the SDRAM speed(bus clock) is not too> fast.> so i want change the SAVE_ALL and RESTORE_ALL to use> internal-ram(high speed).> i just wonder whether the SAVE_ALL netsting in kernel for mips> arch?> if not, i think maybe 1k byte for SAVE_ALL is enough( 32regs> X4, and some cp0_regs).> but if the SAVE_ALL nesting, maybe i need to keep a stack in> internal-ram.> thanks for any hints．>> Best Regards>> --> zzh>> -- 为天地立心为生民立命为往圣继绝学为万世开太平
