On Tue, Jan 02, 2001 at 04:52:22PM -0800, Jun Sun wrote: > Someone reported this bug to me. I think it is a valid one. Basically > trap_init() installs the vectors through kseg0 address and then flushes > icache. It is possible that the vectors are still in the data cache and not > written back to memory yet. If an exception happens it may get the corrupted > the vector value. > > The following patch should fix it. I am not sure if I can use > flush_cache_range() to have potentially better performance. Flush_icache_range is correct; the function is expected to do any dcache writebacks etc. to make dcache / icache / memory coherent. Is it possible that you're using a CPU with additional vectors that aren't flushed by this flush_icache_call or? Ralf
