Messages in this thread | | | Date | Tue, 21 Oct 2008 11:50:03 +0200 | From | Pavel Machek <> | Subject | Re: [PATCH 0/3] Improve TSC as a clocksource under VMware |
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> Hi, > > This patch set makes some changes to the TSC code, so that it is always > used as the default clocksource when running under VMware. > The first 2 patches do the ground work of adding code to detect if we > are running under VMware. > The third patch adds a tsc_reliable flag which tells us that TSC is > reliable on this system, so that we can skip some tests which can > potentially mark TSC as unstable. Details under individual patch > headers.
How do you _know_ TSC is stable under VMWare? AFAICT, accesses to TSC are not virtualized and system VMWare runs on may still use frequency scaling, no? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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