Commit f3f26dae authored by David Woodhouse's avatar David Woodhouse Committed by Paolo Bonzini
Browse files

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: default avatarDavid Woodhouse <dwmw@amazon.co.uk>
Message-Id: <20211209150938.3518-12-dwmw2@infradead.org>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 018d70ff

arch/x86/kernel/kvm.c

+3 −3
Original line number Diff line number Diff line
@@ -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)

arch/x86/kernel/kvmclock.c

+1 −1
Original line number Diff line number Diff line
@@ -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)