[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] [PATCH] x86/time: fix scale_delta() inline assembly

> From: Sylvain Munaut [mailto:s.munaut@xxxxxxxxxxxxxxxxxxxx]
> Subject: Re: [Xen-devel] [PATCH] x86/time: fix scale_delta() inline assembly
> I've just deployed this to a couple test servers that exhibited the problem.
> What I don't really understand is why are some HW affected and not others ?

I don't know, but I'd imagine there is something in the x86 platform
software (aka firmware) of those machines that runs and blocks execution
of Xen for long enough (via NMI/MCE/SMI) for the platform timer to
overflow, and this doesn't occur on other machines.

Maybe Jan has a better idea...

Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.