Re: regression - 2.6.36 -> 2.6.37 - kvm - 32bit SMP guests don'tboot

From: Nikola Ciprich
Date: Fri Feb 25 2011 - 05:49:44 EST

(CC: Zachary)

Zachary, in case You haven't noticed the thread, we're trying
to find out the reason why 32bit SMP guests stopped working
in 2.6.37.
bisect shows this as the culprit:

e48672fa25e879f7ae21785c7efd187738139593 is first bad commit
commit e48672fa25e879f7ae21785c7efd187738139593
Author: Zachary Amsden <zamsden@xxxxxxxxxx>
Date: Thu Aug 19 22:07:23 2010 -1000

KVM: x86: Unify TSC logic

Move the TSC control logic from the vendor backends into x86.c
by adding adjust_tsc_offset to x86 ops. Now all TSC decisions
can be done in one place.

Signed-off-by: Zachary Amsden <zamsden@xxxxxxxxxx>
Signed-off-by: Marcelo Tosatti <mtosatti@xxxxxxxxxx>

Unfortunately I couldn't try 2.6.37 with just this one reverted, certainly
other patches rely on it, but hopefully I've not screwed something while bisecting...

so what now?

Ing. Nikola CIPRICH, s.r.o.
28. rijna 168, 709 01 Ostrava

tel.: +420 596 603 142
fax: +420 596 621 273
mobil: +420 777 093 799

mobil servis: +420 737 238 656
email servis: servis@xxxxxxxxxxx
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at