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    SubjectRe: [PATCH] Fix emergency_restart (sysrq-b) with kvm loaded on Intel hosts
    Eric W. Biederman wrote:
    > Ingo Molnar <> writes:
    >> * Avi Kivity <> wrote:
    >>> Enabling Intel VT has the curious side effect whereby the INIT signal
    >>> is blocked. Rather than comment on the wisdom of this side effect,
    >>> this patch adds an emergency restart reboot notifier, and modifies the
    >>> kvm reboot notifier to disable VT on emergency reboot.
    > Please no notifiers in emergency_restart.
    > First emergency_restart is not supposed to work reliably it is a best effort tickle
    > the hardware thing.
    > Second and more importantly whenever someone adds a notifier instead of a proper hook
    > to one a code path like this it seems like avoiding building a proper interface so
    > and I believe keeps us from getting all of the logic and the heuristics right.
    > Why not just add a disable intel_vt if it is enabled call?

    We need to do it across all cpus.

    However, a reliable (and simpler) fix has emerged: reset via ACPI. That
    causes a true reset which VT does not block.

    error compiling committee.c: too many arguments to function

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      Last update: 2008-08-25 15:39    [W:0.024 / U:59.464 seconds]
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