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    SubjectRe: [PATCH 0/3] cpu: idle state framework for offline CPUs.
    On Sun 2009-08-09 15:22:02, Rafael J. Wysocki wrote:
    > On Sunday 09 August 2009, Pavel Machek wrote:
    > > Hi!
    > >
    > > > > Also, approaches such as [1] can make use of this
    > > > > extended infrastructure instead of putting the CPU to an arbitrary C-state
    > > > > when it is offlined, thereby providing the system administrator a rope to hang
    > > > > himself with should he feel the need to do so.
    > > > I didn't see the reason why administrator needs to know which state offline cpu
    > > > should stay. Don't know about powerpc side, but in x86 side, it appears deepest
    > > > C-state is already preferred.
    > > >
    > >
    > > Agreed, deepest c-state is always best, there's no need to make it configurable.
    >
    > Unless it doesn't work.

    If it does not work, machine will not boot. We already have
    max_cstate= kernel command line option to work around that...

    Pavel
    --
    (english) http://www.livejournal.com/~pavelmachek
    (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html


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