From: Kajol Jain Date: Mon, 11 Jul 2022 03:49:27 +0000 (+0530) Subject: powerpc/kvm: Remove comment related to moving PMU code to perf subsystem X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=4008d54e29531813e800580f8309133b9b14a921;p=linux.git powerpc/kvm: Remove comment related to moving PMU code to perf subsystem Commit aabcaf6ae2a0 ("KVM: PPC: Book3S HV P9: Move host OS save/restore functions to built-in") added a comment in switch_pmu_to_guest function, indicating possibility of moving PMU handling code to perf subsystem. But perf subsystem code compilation depends upon the enablement of CONFIG_PERF_EVENTS whereas, kvm code don't have any dependency on this config. Patch remove this comment as switch_pmu_to_guest functionality is needed even if perf subsystem is disabled. Signed-off-by: Kajol Jain Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20220711034927.213192-2-kjain@linux.ibm.com --- diff --git a/arch/powerpc/kvm/book3s_hv_p9_perf.c b/arch/powerpc/kvm/book3s_hv_p9_perf.c index da3135cab9eaf..44d24cca3df1d 100644 --- a/arch/powerpc/kvm/book3s_hv_p9_perf.c +++ b/arch/powerpc/kvm/book3s_hv_p9_perf.c @@ -44,12 +44,6 @@ void switch_pmu_to_guest(struct kvm_vcpu *vcpu, /* Save host */ if (ppc_get_pmu_inuse()) { - /* - * It might be better to put PMU handling (at least for the - * host) in the perf subsystem because it knows more about what - * is being used. - */ - /* POWER9, POWER10 do not implement HPMC or SPMC */ host_os_sprs->mmcr0 = mfspr(SPRN_MMCR0);