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2010 Mar 30
0
boot_cpu_data differs between Xen hypervisor boot and normal pv_ops kernel boot
Hello,
After booting the xen-stable 2.6.32.10 pv_ops kernel from jeremy git
tree with Xen-4.0.0-rc8 installed,
dmesg | grep PMU shows :
Performance Events : unsupported p6 CPU model 26 no PMU driver, software
events only.
PMU:oprofile: found i386/core_i7.
If I boot the same compiled kernel, without Xen installed,
dmesg | grep PMU shows :
Performance Events : Nehalem/Corei7 events, Intel PMU driver.
PMU:oprofile: found i386/core_i7.
When I looked into the source code, arch/x86/kernel/cpu/perf_event.c,
at run-time boot_cpu_data structure se...