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authorKajol Jain <kjain@linux.ibm.com>2022-07-11 06:49:27 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2022-07-20 15:28:31 +0300
commit4008d54e29531813e800580f8309133b9b14a921 (patch)
treee26e7f09f42bba0319457b380334971a6586db47 /arch/powerpc/kvm
parentdb5360840f09eded71009a981084ab10a93a08d8 (diff)
downloadlinux-4008d54e29531813e800580f8309133b9b14a921.tar.xz
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 <kjain@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220711034927.213192-2-kjain@linux.ibm.com
Diffstat (limited to 'arch/powerpc/kvm')
-rw-r--r--arch/powerpc/kvm/book3s_hv_p9_perf.c6
1 files changed, 0 insertions, 6 deletions
diff --git a/arch/powerpc/kvm/book3s_hv_p9_perf.c b/arch/powerpc/kvm/book3s_hv_p9_perf.c
index da3135cab9ea..44d24cca3df1 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);