Re: [PATCH 1/5] Add a global synchronization point for pvclock

From: Avi Kivity
Date: Tue Apr 20 2010 - 05:39:27 EST


On 04/19/2010 09:35 PM, Zachary Amsden wrote:
Sockets and boards too? (IOW, how reliable is TSC_RELIABLE)?
Not sure, IIRC we clear that when the TSC sync test fails, eg when we
mark the tsc clocksource unusable.

Worrying. By the time we detect this the guest may already have gotten confused by clocks going backwards.


Upstream, we are marking the TSC unstable preemptively when hardware which will eventually sync test is detected, so this should be fine.

ENOPARSE?

--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/