On 07/29/2016 10:29 AM, Andy Lutomirski wrote: >> > In the end, this ensures that threads which do not know how to >> > manage their own pkey rights can not do damage to data which is >> > pkey-protected. > I think you missed the fpu__clear() caller in kernel/fpu/signal.c. > > ISTM it might be more comprehensible to change fpu__clear in general > and then special case things you want to behave differently. The code actually already patched the generic fpu__clear(): fpu__clear() -> copy_init_fpstate_to_fpregs() -> copy_init_pkru_to_fpregs() So I think it hit the case you are talking about. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>