linux-kernel - TSC cleanups, fixes, documentation for KVM

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Date:	Mon, 14 Jun 2010 21:34:02 -1000
From:	Zachary Amsden <zamsden@...hat.com>
To:	avi@...hat.com, mtosatti@...hat.com, glommer@...hat.com,
	kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: TSC cleanups, fixes, documentation for KVM

This is an attempt to cleanup and plug some of the many existing holes
with TSC and as a direct result, kvmclock.  It is not a perfect attempt;
no trap and emulate is yet done for TSC in cases in which it can not be
perfectly virtualized.  In particular, on platforms with unstable /
buggy TSCs, it is not possible to even get a perfectly synchronized TSC.
TSC virtualization should be much improved and many bugs with suspend,
cpufreq as well as general synchronization errors will be eliminated.

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