2.6.34-12-xen is a kernel. The 2.6.34-12-xen has been tested via the Phoronix Test Suite in the configurations listed below.
2010-10-09-0515 - Tests on openSUSE 11.3, Intel Xeon E5504
2010-10-09-0514 - Tests on openSUSE 11.3, Intel Xeon E5504
2010-10-09-0510 - Tests on openSUSE 11.3, Intel Xeon E5504
2010-10-09-0510 - Tests on openSUSE 11.3, Intel Xeon E5504
2010-10-09-0458 - Tests on openSUSE 11.3, Intel Xeon E5504
2010-10-09-0457 - Tests on openSUSE 11.3, Intel Xeon E5504
2010-10-09-0449 - Tests on openSUSE 11.3, Intel Xeon E5504
2010-10-09-0446 - Tests on openSUSE 11.3, Intel Xeon E5504
2010-10-09-0428 - Tests on openSUSE 11.3, Intel Xeon E5504
2010-10-09-0430 - Tests on openSUSE 11.3, Intel Xeon E5504
2010-10-09-0124 - Tests on openSUSE 11.3, Intel Xeon E5504
2010-10-09-0120 - Tests on openSUSE 11.3, Intel Xeon E5504
2010-10-09-0123 - Tests on openSUSE 11.3, Intel Xeon E5504
2010-10-09-0115 - Tests on openSUSE 11.3, Intel Xeon E5504