diff options
| -rw-r--r-- | arch/s390/include/asm/kvm_host.h | 1 | ||||
| -rw-r--r-- | arch/s390/include/asm/mmu.h | 4 | ||||
| -rw-r--r-- | arch/s390/include/asm/mmu_context.h | 2 | ||||
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 23 | ||||
| -rw-r--r-- | arch/s390/kvm/priv.c | 4 |
5 files changed, 18 insertions, 16 deletions
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h index afb0f08b8021..27918b15a8ba 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -792,6 +792,7 @@ struct kvm_arch{ int css_support; int use_irqchip; int use_cmma; + int use_pfmfi; int user_cpu_state_ctrl; int user_sigp; int user_stsi; diff --git a/arch/s390/include/asm/mmu.h b/arch/s390/include/asm/mmu.h index db35c41a59d5..c639c95850e4 100644 --- a/arch/s390/include/asm/mmu.h +++ b/arch/s390/include/asm/mmu.h @@ -22,8 +22,8 @@ typedef struct { unsigned int has_pgste:1; /* The mmu context uses storage keys. */ unsigned int use_skey:1; - /* The mmu context uses CMMA. */ - unsigned int use_cmma:1; + /* The mmu context uses CMM. */ + unsigned int uses_cmm:1; } mm_context_t; #define INIT_MM_CONTEXT(name) \ diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h index 65154eaa3714..d3ebfa8f8a9f 100644 --- a/arch/s390/include/asm/mmu_context.h +++ b/arch/s390/include/asm/mmu_context.h @@ -31,7 +31,7 @@ static inline int init_new_context(struct task_struct *tsk, (current->mm && current->mm->context.alloc_pgste); mm->context.has_pgste = 0; mm->context.use_skey = 0; - mm->context.use_cmma = 0; + mm->context.uses_cmm = 0; #endif switch (mm->context.asce_limit) { case _REGION2_SIZE: diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 56061cf82f01..957be1c51a4b 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -699,6 +699,8 @@ static int kvm_s390_set_mem_control(struct kvm *kvm, struct kvm_device_attr *att mutex_lock(&kvm->lock); if (!kvm->created_vcpus) { kvm->arch.use_cmma = 1; + /* Not compatible with cmma. */ + kvm->arch.use_pfmfi = 0; ret = 0; } mutex_unlock(&kvm->lock); @@ -1603,7 +1605,7 @@ static int kvm_s390_get_cmma_bits(struct kvm *kvm, return -EINVAL; /* CMMA is disabled or was not used, or the buffer has length zero */ bufsize = min(args->count, KVM_S390_CMMA_SIZE_MAX); - if (!bufsize || !kvm->mm->context.use_cmma) { + if (!bufsize || !kvm->mm->context.uses_cmm) { memset(args, 0, sizeof(*args)); return 0; } @@ -1680,7 +1682,7 @@ static int kvm_s390_get_cmma_bits(struct kvm *kvm, /* * This function sets the CMMA attributes for the given pages. If the input * buffer has zero length, no action is taken, otherwise the attributes are - * set and the mm->context.use_cmma flag is set. + * set and the mm->context.uses_cmm flag is set. */ static int kvm_s390_set_cmma_bits(struct kvm *kvm, const struct kvm_s390_cmma_log *args) @@ -1730,9 +1732,9 @@ static int kvm_s390_set_cmma_bits(struct kvm *kvm, srcu_read_unlock(&kvm->srcu, srcu_idx); up_read(&kvm->mm->mmap_sem); - if (!kvm->mm->context.use_cmma) { + if (!kvm->mm->context.uses_cmm) { down_write(&kvm->mm->mmap_sem); - kvm->mm->context.use_cmma = 1; + kvm->mm->context.uses_cmm = 1; up_write(&kvm->mm->mmap_sem); } out: @@ -2043,6 +2045,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) kvm->arch.css_support = 0; kvm->arch.use_irqchip = 0; + kvm->arch.use_pfmfi = sclp.has_pfmfi; kvm->arch.epoch = 0; spin_lock_init(&kvm->arch.start_stop_lock); @@ -2469,8 +2472,6 @@ int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu *vcpu) vcpu->arch.sie_block->cbrlo = get_zeroed_page(GFP_KERNEL); if (!vcpu->arch.sie_block->cbrlo) return -ENOMEM; - - vcpu->arch.sie_block->ecb2 &= ~ECB2_PFMFI; return 0; } @@ -2506,7 +2507,7 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) if (test_kvm_facility(vcpu->kvm, 73)) vcpu->arch.sie_block->ecb |= ECB_TE; - if (test_kvm_facility(vcpu->kvm, 8) && sclp.has_pfmfi) + if (test_kvm_facility(vcpu->kvm, 8) && vcpu->kvm->arch.use_pfmfi) vcpu->arch.sie_block->ecb2 |= ECB2_PFMFI; if (test_kvm_facility(vcpu->kvm, 130)) vcpu->arch.sie_block->ecb2 |= ECB2_IEP; @@ -3038,7 +3039,7 @@ retry: if (kvm_check_request(KVM_REQ_START_MIGRATION, vcpu)) { /* - * Disable CMMA virtualization; we will emulate the ESSA + * Disable CMM virtualization; we will emulate the ESSA * instruction manually, in order to provide additional * functionalities needed for live migration. */ @@ -3048,11 +3049,11 @@ retry: if (kvm_check_request(KVM_REQ_STOP_MIGRATION, vcpu)) { /* - * Re-enable CMMA virtualization if CMMA is available and - * was used. + * Re-enable CMM virtualization if CMMA is available and + * CMM has been used. */ if ((vcpu->kvm->arch.use_cmma) && - (vcpu->kvm->mm->context.use_cmma)) + (vcpu->kvm->mm->context.uses_cmm)) vcpu->arch.sie_block->ecb2 |= ECB2_CMMA; goto retry; } diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c index f0b4185158af..ebfa0442e569 100644 --- a/arch/s390/kvm/priv.c +++ b/arch/s390/kvm/priv.c @@ -1078,9 +1078,9 @@ static int handle_essa(struct kvm_vcpu *vcpu) * value really needs to be written to; if the value is * already correct, we do nothing and avoid the lock. */ - if (vcpu->kvm->mm->context.use_cmma == 0) { + if (vcpu->kvm->mm->context.uses_cmm == 0) { down_write(&vcpu->kvm->mm->mmap_sem); - vcpu->kvm->mm->context.use_cmma = 1; + vcpu->kvm->mm->context.uses_cmm = 1; up_write(&vcpu->kvm->mm->mmap_sem); } /* |