Re: [PATCH 1/2] x86/entry: Avoid interrupt flag save and restore

[Andy Lutomirski]

On May 30, 2016 5:30 AM, "Paolo Bonzini" <pbonzini@xxxxxxxxxx> wrote:
>
> Thanks to all the work that was done by Andy Lutomirski and others,
> enter_from_user_mode and prepare_exit_to_usermode are now called only with
> interrupts disabled.  Let's provide them a version of user_enter/user_exit
> that skips saving and restoring the interrupt flag.

> +/* Called with interrupts disabled.  */
> +static inline void __user_enter(void)
> +{
> +       if (context_tracking_is_enabled())
> +               __context_tracking_enter(CONTEXT_USER);
> +
> +}

Would user_enter_irqs_off be a better name?

--Andy