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KVM: s390: cleanup cpuid handling

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We only have one cpuid for all VCPUs, so let's directly use the one in the
cpu model. Also always store it directly as u64, no need for struct cpuid.

Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
David Hildenbrand 2016-04-04 14:27:51 +02:00 committed by Christian Borntraeger
parent bd50e8ec8f
commit 9bb0ec0997
3 changed files with 11 additions and 14 deletions
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6
arch/s390/include/asm/kvm_host.h
View File

@ -544,10 +544,6 @@ struct kvm_vcpu_arch {
struct kvm_s390_local_interrupt local_int;
struct hrtimer ckc_timer;
struct kvm_s390_pgm_info pgm;
union {
struct cpuid cpu_id;
u64 stidp_data;
};
struct gmap *gmap;
struct kvm_guestdbg_info_arch guestdbg;
unsigned long pfault_token;
@ -605,7 +601,7 @@ struct kvm_s390_cpu_model {
__u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
/* facility list requested by guest (in dma page) */
__u64 *fac_list;
struct cpuid cpu_id;
u64 cpuid;
unsigned short ibc;
};

17
arch/s390/kvm/kvm-s390.c
View File

@ -652,8 +652,7 @@ static int kvm_s390_set_processor(struct kvm *kvm, struct kvm_device_attr *attr)
}
if (!copy_from_user(proc, (void __user *)attr->addr,
sizeof(*proc))) {
memcpy(&kvm->arch.model.cpu_id, &proc->cpuid,
sizeof(struct cpuid));
kvm->arch.model.cpuid = proc->cpuid;
kvm->arch.model.ibc = proc->ibc;
memcpy(kvm->arch.model.fac_list, proc->fac_list,
S390_ARCH_FAC_LIST_SIZE_BYTE);
@ -687,7 +686,7 @@ static int kvm_s390_get_processor(struct kvm *kvm, struct kvm_device_attr *attr)
ret = -ENOMEM;
goto out;
}
memcpy(&proc->cpuid, &kvm->arch.model.cpu_id, sizeof(struct cpuid));
proc->cpuid = kvm->arch.model.cpuid;
proc->ibc = kvm->arch.model.ibc;
memcpy(&proc->fac_list, kvm->arch.model.fac_list,
S390_ARCH_FAC_LIST_SIZE_BYTE);
@ -1081,10 +1080,13 @@ static void kvm_s390_set_crycb_format(struct kvm *kvm)
kvm->arch.crypto.crycbd |= CRYCB_FORMAT1;
}
static void kvm_s390_get_cpu_id(struct cpuid *cpu_id)
static u64 kvm_s390_get_initial_cpuid(void)
{
get_cpu_id(cpu_id);
cpu_id->version = 0xff;
struct cpuid cpuid;
get_cpu_id(&cpuid);
cpuid.version = 0xff;
return *((u64 *) &cpuid);
}
static void kvm_s390_crypto_init(struct kvm *kvm)
@ -1175,7 +1177,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
memcpy(kvm->arch.model.fac_list, kvm->arch.model.fac_mask,
S390_ARCH_FAC_LIST_SIZE_BYTE);
kvm_s390_get_cpu_id(&kvm->arch.model.cpu_id);
kvm->arch.model.cpuid = kvm_s390_get_initial_cpuid();
kvm->arch.model.ibc = sclp.ibc & 0x0fff;
kvm_s390_crypto_init(kvm);
@ -1624,7 +1626,6 @@ static void kvm_s390_vcpu_setup_model(struct kvm_vcpu *vcpu)
{
struct kvm_s390_cpu_model *model = &vcpu->kvm->arch.model;
vcpu->arch.cpu_id = model->cpu_id;
vcpu->arch.sie_block->ibc = model->ibc;
if (test_kvm_facility(vcpu->kvm, 7))
vcpu->arch.sie_block->fac = (u32)(u64) model->fac_list;

2
arch/s390/kvm/priv.c
View File

@ -439,7 +439,7 @@ static int handle_lpswe(struct kvm_vcpu *vcpu)
static int handle_stidp(struct kvm_vcpu *vcpu)
{
u64 stidp_data = vcpu->arch.stidp_data;
u64 stidp_data = vcpu->kvm->arch.model.cpuid;
u64 operand2;
int rc;
ar_t ar;