x86/kvm: Silence per-cpu pr_info noise about KVM clocks and steal time

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.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Message-Id: <20211209150938.3518-12-dwmw2@infradead.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index 59abbda..a438217 100644 (file)
--- 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 462dd8e..a35cbf9 100644 (file)
--- 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)