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

[Andy Lutomirski]

On Mon, Jun 20, 2016 at 7:58 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.

You're also skipping the in_interrupt() check, but that appears to be fine.

Reviewed-by: Andy Lutomirski <luto@xxxxxxxxxx>