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SubjectRe: [linux-pm] [PATCH 0/8] Suspend block api (version 6)
On Thu, May 13, 2010 at 12:42:05PM -0700, Tony Lindgren wrote:

> 1. In the kernel, we add one more timer queue for critical timers.
> The current timer queue(s) stay as it is.
>
> 2. We allow selecting the timer based on some flag, the default
> behaviour being the current default timer queue.
>
> 3. Then we add next_timer_interupt_critical() to only query the
> critical timers along the lines of the current next_timer_interrupt().
>
> 4. We implement a custom pm_idle that suspends the system based on
> some logic and checking if next_timer_interrupt_critical() is
> empty. If the next_timer_interrupt_critical() does not return
> anything, we assume it's OK to suspend the system.

Ok. So we stick the untrusted bits of userspace on the critical timer
list. Now we get a network packet that generates a wakeup event and gets
read by an application. What happens if that application can't fully
process the packet in a single timeslice?

--
Matthew Garrett | mjg59@srcf.ucam.org


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