>>>>> On Wed, 19 Oct 2005 14:29:02 +0100, Ralf Baechle <ralf@xxxxxxxxxxxxxx> said: >> I found cacheflush(0, 0, 0) will crash the system. >> >> This is because flush_icache_range(start, end) tries to flushing >> whole address space (0 - ffffffff) if both start and end are zero >> (at least in c-r4k.c). ralf> Applied, Thanks. BTW, sparse complains for this "unsigned long __user addr". asmlinkage int sys_cacheflush(unsigned long __user addr, unsigned long bytes, unsigned int cache) /work/git/linux-mips/arch/mips/mm/cache.c:59:7: warning: dereference of noderef expression I suppose the "unsigned long __user addr" means that the "addr" variable itself is an userspace object. So its usage is wrong, isn't it? --- Atsushi Nemoto
