On Mon, May 06, 2019 at 06:30:51PM +0200, Andrey Konovalov wrote: > +SYSCALL_DEFINE5(arm64_get_mempolicy, int __user *, policy, > + unsigned long __user *, nmask, unsigned long, maxnode, > + unsigned long, addr, unsigned long, flags) > +{ > + addr = untagged_addr(addr); > + return ksys_get_mempolicy(policy, nmask, maxnode, addr, flags); > +} [...] > +SYSCALL_DEFINE6(arm64_mbind, unsigned long, start, unsigned long, len, > + unsigned long, mode, const unsigned long __user *, nmask, > + unsigned long, maxnode, unsigned int, flags) > +{ > + start = untagged_addr(start); > + return ksys_mbind(start, len, mode, nmask, maxnode, flags); > +} The kernel fails to build with CONFIG_NUMA disabled because the above are in mm/mempolicy.c which is no longer compiled in. -- Catalin