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