95492e4646e5de8b43d9a7908d6177fb737b61f0 is first bad commit
commit 95492e4646e5de8b43d9a7908d6177fb737b61f0
Author: Ingo Molnar <mingo@elte.hu>
Date:   Fri Feb 16 01:27:34 2007 -0800

    [PATCH] x86: rewrite SMP TSC sync code
    
    make the TSC synchronization code more robust, and unify it between x86_64 and
    i386.
    
    The biggest change is the removal of the 'fix up TSCs' code on x86_64 and
    i386, in some rare cases it was /causing/ time-warps on SMP systems.
    
    The new code only checks for TSC asynchronity - and if it can prove a
    time-warp (if it can observe the TSC going backwards when going from one CPU
    to another within a critical section), then the TSC clock-source is turned
    off.
    
    The TSC synchronization-checking code also got moved into a separate file.
    
    Signed-off-by: Ingo Molnar <mingo@elte.hu>
    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    Cc: john stultz <johnstul@us.ibm.com>
    Cc: Roman Zippel <zippel@linux-m68k.org>
    Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
    Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

:040000 040000 cc95d97744405c5c4c39c47aff7504d73cfaa139 1f7fcab80c3cc07f39f66038a14b966bd5dcbc89 M      arch
:040000 040000 90b0289adc69bc487f27faa9ff05b34b83466051 cb036cf2dc489c729381eefbae7ee0494acd26b5 M      include