[PATCH 20/21] MIPS: KVM: Quieten kvm_info() logging

James Hogan
2014-04-25T15:20:48Z

The logging from MIPS KVM is fairly noisy with kvm_info() in places
where it shouldn't be, such as on VM creation and migration to a
different CPU. Replace these kvm_info() calls with kvm_debug().

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: kvm@vger.kernel.org
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: Sanjay Lal <sanjayl@kymasys.com>
---
arch/mips/kvm/kvm_mips.c | 27 +++++++++++++--------------
arch/mips/kvm/kvm_tlb.c | 16 ++++++++--------
2 files changed, 21 insertions(+), 22 deletions(-)

diff --git a/arch/mips/kvm/kvm_mips.c b/arch/mips/kvm/kvm_mips.c
index 0cf03efe8a57..c0c4f20191b5 100644
--- a/arch/mips/kvm/kvm_mips.c
+++ b/arch/mips/kvm/kvm_mips.c
@@ -130,8 +130,8 @@ static void kvm_mips_init_vm_percpu(void *arg)
int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
{
if (atomic_inc_return(&kvm_mips_instance) == 1) {
- kvm_info("%s: 1st KVM instance, setup host TLB parameters\n",
- __func__);
+ kvm_debug("%s: 1st KVM instance, setup host TLB parameters\n",
+ __func__);
on_each_cpu(kvm_mips_init_vm_percpu, kvm, 1);
}

@@ -186,8 +186,8 @@ void kvm_arch_destroy_vm(struct kvm *kvm)

/* If this is the last instance, restore wired count */
if (atomic_dec_return(&kvm_mips_instance) == 0) {
- kvm_info("%s: last KVM instance, restoring TLB parameters\n",
- __func__);
+ kvm_debug("%s: last KVM instance, restoring TLB parameters\n",
+ __func__);
on_each_cpu(kvm_mips_uninit_tlbs, NULL, 1);
}
}
@@ -249,9 +249,8 @@ void kvm_arch_commit_memory_region(struct kvm *kvm,
goto out;
}

- kvm_info
- ("Allocated space for Guest PMAP Table (%ld pages) @ %p\n",
- npages, kvm->arch.guest_pmap);
+ kvm_debug("Allocated space for Guest PMAP Table (%ld pages) @ %p\n",
+ npages, kvm->arch.guest_pmap);

/* Now setup the page table */
for (i = 0; i < npages; i++) {
@@ -296,7 +295,7 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
if (err)
goto out_free_cpu;

- kvm_info("kvm @ %p: create cpu %d at %p\n", kvm, id, vcpu);
+ kvm_debug("kvm @ %p: create cpu %d at %p\n", kvm, id, vcpu);

/* Allocate space for host mode exception handlers that handle
* guest mode exits
@@ -316,8 +315,8 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
err = -ENOMEM;
goto out_free_cpu;
}
- kvm_info("Allocated %d bytes for KVM Exception Handlers @ %p\n",
- ALIGN(size, PAGE_SIZE), gebase);
+ kvm_debug("Allocated %d bytes for KVM Exception Handlers @ %p\n",
+ ALIGN(size, PAGE_SIZE), gebase);

/* Save new ebase */
vcpu->arch.guest_ebase = gebase;
@@ -342,9 +341,9 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)

/* General handler, relocate to unmapped space for sanity's sake */
offset = 0x2000;
- kvm_info("Installing KVM Exception handlers @ %p, %#x bytes\n",
- gebase + offset,
- mips32_GuestExceptionEnd - mips32_GuestException);
+ kvm_debug("Installing KVM Exception handlers @ %p, %#x bytes\n",
+ gebase + offset,
+ mips32_GuestExceptionEnd - mips32_GuestException);

memcpy(gebase + offset, mips32_GuestException,
mips32_GuestExceptionEnd - mips32_GuestException);
@@ -361,7 +360,7 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
goto out_free_gebase;
}

- kvm_info("Allocated COMM page @ %p\n", vcpu->arch.kseg0_commpage);
+ kvm_debug("Allocated COMM page @ %p\n", vcpu->arch.kseg0_commpage);
kvm_mips_commpage_init(vcpu);

/* Init */
diff --git a/arch/mips/kvm/kvm_tlb.c b/arch/mips/kvm/kvm_tlb.c
index 51e7866ea893..0cdd586b0dc5 100644
--- a/arch/mips/kvm/kvm_tlb.c
+++ b/arch/mips/kvm/kvm_tlb.c
@@ -662,17 +662,17 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
vcpu->arch.guest_user_mm.context.asid[cpu];
newasid++;

- kvm_info("[%d]: cpu_context: %#lx\n", cpu,
- cpu_context(cpu, current->mm));
- kvm_info("[%d]: Allocated new ASID for Guest Kernel: %#x\n",
- cpu, vcpu->arch.guest_kernel_asid[cpu]);
- kvm_info("[%d]: Allocated new ASID for Guest User: %#x\n", cpu,
- vcpu->arch.guest_user_asid[cpu]);
+ kvm_debug("[%d]: cpu_context: %#lx\n", cpu,
+ cpu_context(cpu, current->mm));
+ kvm_debug("[%d]: Allocated new ASID for Guest Kernel: %#x\n",
+ cpu, vcpu->arch.guest_kernel_asid[cpu]);
+ kvm_debug("[%d]: Allocated new ASID for Guest User: %#x\n", cpu,
+ vcpu->arch.guest_user_asid[cpu]);
}

if (vcpu->arch.last_sched_cpu != cpu) {
- kvm_info("[%d->%d]KVM VCPU[%d] switch\n",
- vcpu->arch.last_sched_cpu, cpu, vcpu->vcpu_id);
+ kvm_debug("[%d->%d]KVM VCPU[%d] switch\n",
+ vcpu->arch.last_sched_cpu, cpu, vcpu->vcpu_id);
/*
* Migrate the timer interrupt to the current CPU so that it
* always interrupts the guest and synchronously triggers a
--
1.8.1.2