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KVM: s390: cleanup cpuid handling 

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;