On 11/28/22 14:13, Huang, Kai wrote: > Apologize I am not entirely sure whether I fully got your point. Do you mean > something like below? ... No, something like this: static int init_tdx_module(void) { static struct tdsysinfo_struct tdx_sysinfo; /* too rotund for the stack */ ... tdx_get_sysinfo(&tdx_sysinfo, ...); ... But, also, seriously, 3k on the stack is *fine* if you can shut up the warnings. This isn't going to be a deep call stack to begin with.