[PATCH 5.15.y 1/3] x86/kvm: Silence per-cpu pr_info noise about KVM clocks and steal time

[Sasha Levin <sashal@kernel.org>]

From: David Woodhouse <dwmw@amazon.co.uk>

[ Upstream commit f3f26dae05e39f0f286f588669b54d49b61dcfb8 ]

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>
Stable-dep-of: 81d99abe2bd8 ("x86/kvm: Don't consume async #PF flags on a kernel #PF in NMI context")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 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 4286b0f247ea3..32d3319115e51 100644
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -324,7 +324,7 @@ 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));
 }
 
@@ -361,7 +361,7 @@ 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)) {
@@ -387,7 +387,7 @@ 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 1d986b353b3e5..047f97813bf34 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)
-- 
2.53.0