Re: [PATCH] Skip tsc synchronization checks if CONSTANT_TSC bit isset.

From: H. Peter Anvin
Date: Fri Oct 24 2008 - 15:20:41 EST


Andi Kleen wrote:

In the field they will just continue using clock=pit, like they
always did on vmware. And also they will not update the Linux kernel.


That is a totally bogus assumption. You will typically have the host platform (Vmware in this case) move much much slower than the guests.

This is strictly for new installations. And I frankly don't see why Linux needs to get white listed workarounds when the Hypervisor couldn't as well be fixed. We have the bizarre
situation here where a HV vendor tries to add workarounds
to Linux instead of fixing it on their products.

... just like every other hardware vendor.

-hpa
--
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/