Re: [PATCH] KVM: x86: avoid out of bounds indices for fixed performance counters

From: Paolo Bonzini
Date: Fri Dec 10 2021 - 04:03:37 EST


On 12/10/21 09:59, Like Xu wrote:

How about introducing a static "struct x86_pmu_capability" variable [1] so that we can

(1) setup num_counters_fixed just once in the kvm_init_pmu_capability(), and
(2) avoid repeated calls to perf_get_x86_pmu_capability() ;

Yes, that works.

[1] https://lore.kernel.org/kvm/20210806133802.3528-17-lingshan.zhu@xxxxxxxxx/
By the way, do you need a re-based version of the guest PBES feature ?

Sure, please send one.

Paolo