UCONTEXT_PERSISTENCE
pc->user_flags |= BIT(UCONTEXT_PERSISTENCE);
pc->user_flags &= ~BIT(UCONTEXT_PERSISTENCE);
pc->user_flags |= BIT(UCONTEXT_PERSISTENCE);
return test_bit(UCONTEXT_PERSISTENCE, &ctx->user_flags);
set_bit(UCONTEXT_PERSISTENCE, &ctx->user_flags);
clear_bit(UCONTEXT_PERSISTENCE, &ctx->user_flags);