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| author | Thomas Gleixner <[email protected]> | 2019-07-22 18:47:08 +0000 |
|---|---|---|
| committer | Thomas Gleixner <[email protected]> | 2019-07-25 14:11:56 +0000 |
| commit | 2640da4cccf5cc613bf26f0998b9e340f4b5f69c (patch) | |
| tree | fd9339f9760a29c0c0cc4beab2bb5ca702ea1c3a /tools/perf/scripts/python/intel-pt-events.py | |
| parent | x86/apic: Invoke perf_events_lapic_init() after enabling APIC (diff) | |
| download | kernel-2640da4cccf5cc613bf26f0998b9e340f4b5f69c.tar.gz kernel-2640da4cccf5cc613bf26f0998b9e340f4b5f69c.zip | |
x86/apic: Soft disable APIC before initializing it
If the APIC was already enabled on entry of setup_local_APIC() then
disabling it soft via the SPIV register makes a lot of sense.
That masks all LVT entries and brings it into a well defined state.
Otherwise previously enabled LVTs which are not touched in the setup
function stay unmasked and might surprise the just booting kernel.
Signed-off-by: Thomas Gleixner <[email protected]>
Acked-by: Peter Zijlstra (Intel) <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
Diffstat (limited to 'tools/perf/scripts/python/intel-pt-events.py')
0 files changed, 0 insertions, 0 deletions