Fix a breakage caused by enabling early tsc initialization which bypasses a check that disables the forcing of TSC ADJUST to 0 for chassis 0. This is common on systems where all the chassis start up asynchronously so which chassis should have a TSC ADJUST value of 0 is not predictable.
The solution is to add a check earlier than this early tsc init to disable the potential of it incorrectly adjusting TSC ADJUST values that are already correctly initialized. * Patch 1 adds an early callable function (right after efi_init) that will check if this system might be a UV system. * Patch 2 adds code into setup_arch() which disables the call to tsc_early_init. This function calls the TSC adjust initialization functions before UV setup has checked if BIOS has set the multi-chassis sync flags. Further references are in the patch. --
