Messages in this thread | ![/](/images/icornerl.gif) | | Date | Thu, 9 Dec 2021 18:39:13 +0100 | Subject | Re: [PATCH 11/11] x86/kvm: Silence per-cpu pr_info noise about KVM clocks and steal time | From | Paolo Bonzini <> |
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On 12/9/21 16:09, David Woodhouse wrote: > From: David Woodhouse<dwmw@amazon.co.uk> > > I made the actual CPU bringup go nice and fast... and then Linux spends > half a minute printing stupid nonsense about clocks and steal time for > each of 256 vCPUs. Don't do that. Nobody cares.
Queued this one, it makes sense even without the rest of the series.
Paolo
> Signed-off-by: David Woodhouse<dwmw@amazon.co.uk> > --- > arch/x86/kernel/kvm.c | 6 +++--- > arch/x86/kernel/kvmclock.c | 2 +- > 2 files changed, 4 insertions(+), 4 deletions(-) > > diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c > index 59abbdad7729..a438217cbfac 100644 > --- a/arch/x86/kernel/kvm.c > +++ b/arch/x86/kernel/kvm.c > @@ -313,7 +313,7 @@ static void kvm_register_steal_time(void) > return; > > wrmsrl(MSR_KVM_STEAL_TIME, (slow_virt_to_phys(st) | KVM_MSR_ENABLED)); > - pr_info("stealtime: cpu %d, msr %llx\n", cpu, > + pr_debug("stealtime: cpu %d, msr %llx\n", cpu, > (unsigned long long) slow_virt_to_phys(st)); > } > > @@ -350,7 +350,7 @@ static void kvm_guest_cpu_init(void) > > wrmsrl(MSR_KVM_ASYNC_PF_EN, pa); > __this_cpu_write(apf_reason.enabled, 1); > - pr_info("setup async PF for cpu %d\n", smp_processor_id()); > + pr_debug("setup async PF for cpu %d\n", smp_processor_id()); > } > > if (kvm_para_has_feature(KVM_FEATURE_PV_EOI)) { > @@ -376,7 +376,7 @@ static void kvm_pv_disable_apf(void) > wrmsrl(MSR_KVM_ASYNC_PF_EN, 0); > __this_cpu_write(apf_reason.enabled, 0); > > - pr_info("disable async PF for cpu %d\n", smp_processor_id()); > + pr_debug("disable async PF for cpu %d\n", smp_processor_id()); > } > > static void kvm_disable_steal_time(void) > diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c > index 462dd8e9b03d..a35cbf9107af 100644 > --- a/arch/x86/kernel/kvmclock.c > +++ b/arch/x86/kernel/kvmclock.c > @@ -174,7 +174,7 @@ static void kvm_register_clock(char *txt) > > pa = slow_virt_to_phys(&src->pvti) | 0x01ULL; > wrmsrl(msr_kvm_system_time, pa); > - pr_info("kvm-clock: cpu %d, msr %llx, %s", smp_processor_id(), pa, txt); > + pr_debug("kvm-clock: cpu %d, msr %llx, %s", smp_processor_id(), pa, txt); > } > > static void kvm_save_sched_clock_state(void) > -- 2.31.1 >
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