• Cyrill Gorcunov's avatar
    x86, perf events: Check if we have APIC enabled · 12558038
    Cyrill Gorcunov authored
    
    
    Ralf Hildebrandt reported this boot warning:
    
    | Running a vanilla 2.6.32 as Xen DomU, I'm getting:
    |
    | [    0.000999] CPU: Physical Processor ID: 0
    | [    0.000999] CPU: Processor Core ID: 1
    | [    0.000999] Performance Events: AMD PMU driver.
    | [    0.000999] ------------[ cut here ]------------
    | [    0.000999] WARNING: at arch/x86/kernel/apic/apic.c:249 native_apic_write_dummy
    
    So we need to check if APIC functionality is available, and
    not just in the P6 driver but elsewhere as well.
    Reported-by: default avatarRalf Hildebrandt <Ralf.Hildebrandt@charite.de>
    Signed-off-by: default avatarCyrill Gorcunov <gorcunov@openvz.org>
    Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
    Cc: Mike Galbraith <efault@gmx.de>
    Cc: Paul Mackerras <paulus@samba.org>
    Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
    Cc: Frederic Weisbecker <fweisbec@gmail.com>
    LKML-Reference: <20091210165634.GF5086@lenovo>
    Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
    12558038
perf_event.c 56.5 KB