This is a note to let you know that I've just added the patch titled
KVM: s390: Drop pending interrupts on guest exit
to the 3.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
kvm-s390-drop-pending-interrupts-on-guest-exit.patch
and it can be found in the queue-3.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 67335e63c9ef59e97b45a08b4a6a93767762031d Mon Sep 17 00:00:00 2001
From: Christian Borntraeger <[email protected]>
Date: Tue, 25 Mar 2014 17:09:08 +0100
Subject: KVM: s390: Drop pending interrupts on guest exit
From: Christian Borntraeger <[email protected]>
commit 67335e63c9ef59e97b45a08b4a6a93767762031d upstream.
On hard exits (abort, sigkill) we have have some kvm_s390_interrupt_info
structures hanging around. Delete those on exit to avoid memory leaks.
Signed-off-by: Christian Borntraeger <[email protected]>
Reviewed-by: Thomas Huth <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
arch/s390/kvm/interrupt.c | 4 ++--
arch/s390/kvm/kvm-s390.c | 2 ++
arch/s390/kvm/kvm-s390.h | 1 +
3 files changed, 5 insertions(+), 2 deletions(-)
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -900,7 +900,7 @@ int kvm_s390_inject_vcpu(struct kvm_vcpu
return 0;
}
-static void clear_floating_interrupts(struct kvm *kvm)
+void kvm_s390_clear_float_irqs(struct kvm *kvm)
{
struct kvm_s390_float_interrupt *fi;
struct kvm_s390_interrupt_info *n, *inti = NULL;
@@ -1246,7 +1246,7 @@ static int flic_set_attr(struct kvm_devi
break;
case KVM_DEV_FLIC_CLEAR_IRQS:
r = 0;
- clear_floating_interrupts(dev->kvm);
+ kvm_s390_clear_float_irqs(dev->kvm);
break;
case KVM_DEV_FLIC_APF_ENABLE:
dev->kvm->arch.gmap->pfault_enabled = 1;
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -322,6 +322,7 @@ void kvm_arch_vcpu_destroy(struct kvm_vc
{
VCPU_EVENT(vcpu, 3, "%s", "free cpu");
trace_kvm_s390_destroy_vcpu(vcpu->vcpu_id);
+ kvm_s390_clear_local_irqs(vcpu);
kvm_clear_async_pf_completion_queue(vcpu);
if (!kvm_is_ucontrol(vcpu->kvm)) {
clear_bit(63 - vcpu->vcpu_id,
@@ -372,6 +373,7 @@ void kvm_arch_destroy_vm(struct kvm *kvm
if (!kvm_is_ucontrol(kvm))
gmap_free(kvm->arch.gmap);
kvm_s390_destroy_adapters(kvm);
+ kvm_s390_clear_float_irqs(kvm);
}
/* Section: vcpu related */
--- a/arch/s390/kvm/kvm-s390.h
+++ b/arch/s390/kvm/kvm-s390.h
@@ -130,6 +130,7 @@ void kvm_s390_tasklet(unsigned long parm
void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu);
void kvm_s390_deliver_pending_machine_checks(struct kvm_vcpu *vcpu);
void kvm_s390_clear_local_irqs(struct kvm_vcpu *vcpu);
+void kvm_s390_clear_float_irqs(struct kvm *kvm);
int __must_check kvm_s390_inject_vm(struct kvm *kvm,
struct kvm_s390_interrupt *s390int);
int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
Patches currently in stable-queue which might be from [email protected] are
queue-3.15/kvm-s390-drop-pending-interrupts-on-guest-exit.patch
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