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| author | David Hildenbrand | 2014-03-14 10:59:29 +0100 |
|---|---|---|
| committer | Christian Borntraeger | 2014-04-29 15:01:54 +0200 |
| commit | 6852d7b69b4949234c3a8ae1f279f6a4c6563662 (patch) | |
| tree | 1fc932ccffef93c90918d435b1269b4f2e76a053 /arch/s390/kvm/kvm-s390.c | |
| parent | KVM: s390: Add low-address protection to TEST BLOCK (diff) | |
| download | kernel-qcow2-linux-6852d7b69b4949234c3a8ae1f279f6a4c6563662.tar.gz kernel-qcow2-linux-6852d7b69b4949234c3a8ae1f279f6a4c6563662.tar.xz kernel-qcow2-linux-6852d7b69b4949234c3a8ae1f279f6a4c6563662.zip | |
KVM: s390: introduce kvm_s390_vcpu_{start,stop}
This patch introduces two new functions to set/clear the CPUSTAT_STOPPED bit and
makes use of it at all applicable places. These functions prepare the additional
execution of code when starting/stopping a vcpu.
The CPUSTAT_STOPPED bit should not be touched outside of these functions.
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm/kvm-s390.c')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index b32c42cbc706..6c972d229ace 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -592,7 +592,7 @@ static void kvm_s390_vcpu_initial_reset(struct kvm_vcpu *vcpu) vcpu->arch.sie_block->pp = 0; vcpu->arch.pfault_token = KVM_S390_PFAULT_TOKEN_INVALID; kvm_clear_async_pf_completion_queue(vcpu); - atomic_set_mask(CPUSTAT_STOPPED, &vcpu->arch.sie_block->cpuflags); + kvm_s390_vcpu_stop(vcpu); kvm_s390_clear_local_irqs(vcpu); } @@ -1235,7 +1235,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) if (vcpu->sigset_active) sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); - atomic_clear_mask(CPUSTAT_STOPPED, &vcpu->arch.sie_block->cpuflags); + kvm_s390_vcpu_start(vcpu); switch (kvm_run->exit_reason) { case KVM_EXIT_S390_SIEIC: @@ -1362,6 +1362,18 @@ int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr) return kvm_s390_store_status_unloaded(vcpu, addr); } +void kvm_s390_vcpu_start(struct kvm_vcpu *vcpu) +{ + trace_kvm_s390_vcpu_start_stop(vcpu->vcpu_id, 1); + atomic_clear_mask(CPUSTAT_STOPPED, &vcpu->arch.sie_block->cpuflags); +} + +void kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu) +{ + trace_kvm_s390_vcpu_start_stop(vcpu->vcpu_id, 0); + atomic_set_mask(CPUSTAT_STOPPED, &vcpu->arch.sie_block->cpuflags); +} + static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, struct kvm_enable_cap *cap) { |