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| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2015-04-14 12:17:34 +0200 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2015-05-08 15:51:15 +0200 |
| commit | 27406cd50cf6653196eea8ebbb15a75596da01ca (patch) | |
| tree | 371f3d79b9a1958a5714cd823b5e3b6f24397cd2 /arch/s390/kvm/kvm-s390.h | |
| parent | KVM: s390: make exit_sie_sync more robust (diff) | |
| download | linux-27406cd50cf6653196eea8ebbb15a75596da01ca.tar.xz linux-27406cd50cf6653196eea8ebbb15a75596da01ca.zip | |
KVM: s390: provide functions for blocking all CPUs
Some updates to the control blocks need to be done in a way that
ensures that no CPU is within SIE. Provide wrappers around the
s390_vcpu_block functions and adopt the TOD migration code to
update in a guaranteed fashion. Also rename these functions to
have the kvm_s390_ prefix as everything else.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Diffstat (limited to 'arch/s390/kvm/kvm-s390.h')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.h | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h index 8edca85e246e..c5704786e473 100644 --- a/arch/s390/kvm/kvm-s390.h +++ b/arch/s390/kvm/kvm-s390.h @@ -211,8 +211,8 @@ int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr); int kvm_s390_vcpu_store_adtl_status(struct kvm_vcpu *vcpu, unsigned long addr); void kvm_s390_vcpu_start(struct kvm_vcpu *vcpu); void kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu); -void s390_vcpu_block(struct kvm_vcpu *vcpu); -void s390_vcpu_unblock(struct kvm_vcpu *vcpu); +void kvm_s390_vcpu_block(struct kvm_vcpu *vcpu); +void kvm_s390_vcpu_unblock(struct kvm_vcpu *vcpu); void exit_sie(struct kvm_vcpu *vcpu); void kvm_s390_sync_request(int req, struct kvm_vcpu *vcpu); int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu *vcpu); @@ -228,6 +228,25 @@ int kvm_s390_handle_diag(struct kvm_vcpu *vcpu); int kvm_s390_inject_prog_irq(struct kvm_vcpu *vcpu, struct kvm_s390_pgm_info *pgm_info); +static inline void kvm_s390_vcpu_block_all(struct kvm *kvm) +{ + int i; + struct kvm_vcpu *vcpu; + + WARN_ON(!mutex_is_locked(&kvm->lock)); + kvm_for_each_vcpu(i, vcpu, kvm) + kvm_s390_vcpu_block(vcpu); +} + +static inline void kvm_s390_vcpu_unblock_all(struct kvm *kvm) +{ + int i; + struct kvm_vcpu *vcpu; + + kvm_for_each_vcpu(i, vcpu, kvm) + kvm_s390_vcpu_unblock(vcpu); +} + /** * kvm_s390_inject_prog_cond - conditionally inject a program check * @vcpu: virtual cpu |