diff options
| -rw-r--r-- | arch/s390/include/asm/kvm_host.h | 2 | ||||
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 15 |
2 files changed, 17 insertions, 0 deletions
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h index 79fa0a3a777f..0a78036a802b 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -859,6 +859,8 @@ void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu, void kvm_arch_async_page_present(struct kvm_vcpu *vcpu, struct kvm_async_pf *work); +void kvm_arch_crypto_clear_masks(struct kvm *kvm); + extern int sie64a(struct kvm_s390_sie_block *, u64 *); extern char sie_exit; diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index d62f6d840f8c..75aa5aa4a926 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -2033,6 +2033,21 @@ static void kvm_s390_set_crycb_format(struct kvm *kvm) kvm->arch.crypto.crycbd |= CRYCB_FORMAT1; } +void kvm_arch_crypto_clear_masks(struct kvm *kvm) +{ + mutex_lock(&kvm->lock); + kvm_s390_vcpu_block_all(kvm); + + memset(&kvm->arch.crypto.crycb->apcb0, 0, + sizeof(kvm->arch.crypto.crycb->apcb0)); + memset(&kvm->arch.crypto.crycb->apcb1, 0, + sizeof(kvm->arch.crypto.crycb->apcb1)); + + kvm_s390_vcpu_unblock_all(kvm); + mutex_unlock(&kvm->lock); +} +EXPORT_SYMBOL_GPL(kvm_arch_crypto_clear_masks); + static u64 kvm_s390_get_initial_cpuid(void) { struct cpuid cpuid; |