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提交 ea1918dd 编写于 作者: H Heiko Carstens 提交者： Marcelo Tosatti
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KVM: s390: use sigp condition code defines 

Just use the defines instead of using plain numbers and adding
a comment behind each line.
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
上级 0744426e
隐藏空白更改
内联 并排
Showing with 29 addition and 29 deletion
arch/s390/kvm/sigp.c
浏览文件 @ ea1918dd
......@@ -26,19 +26,19 @@ static int __sigp_sense(struct kvm_vcpu *vcpu, u16 cpu_addr,
int rc;
if (cpu_addr >= KVM_MAX_VCPUS)
return 3; /* not operational */
return SIGP_CC_NOT_OPERATIONAL;
spin_lock(&fi->lock);
if (fi->local_int[cpu_addr] == NULL)
rc = 3; /* not operational */
rc = SIGP_CC_NOT_OPERATIONAL;
else if (!(atomic_read(fi->local_int[cpu_addr]->cpuflags)
& CPUSTAT_STOPPED)) {
*reg &= 0xffffffff00000000UL;
rc = 1; /* status stored */
rc = SIGP_CC_STATUS_STORED;
} else {
*reg &= 0xffffffff00000000UL;
*reg |= SIGP_STATUS_STOPPED;
rc = 1; /* status stored */
rc = SIGP_CC_STATUS_STORED;
}
spin_unlock(&fi->lock);
......@@ -54,7 +54,7 @@ static int __sigp_emergency(struct kvm_vcpu *vcpu, u16 cpu_addr)
int rc;
if (cpu_addr >= KVM_MAX_VCPUS)
return 3; /* not operational */
return SIGP_CC_NOT_OPERATIONAL;
inti = kzalloc(sizeof(*inti), GFP_KERNEL);
if (!inti)
......@@ -66,7 +66,7 @@ static int __sigp_emergency(struct kvm_vcpu *vcpu, u16 cpu_addr)
spin_lock(&fi->lock);
li = fi->local_int[cpu_addr];
if (li == NULL) {
rc = 3; /* not operational */
rc = SIGP_CC_NOT_OPERATIONAL;
kfree(inti);
goto unlock;
}
......@@ -77,7 +77,7 @@ static int __sigp_emergency(struct kvm_vcpu *vcpu, u16 cpu_addr)
if (waitqueue_active(&li->wq))
wake_up_interruptible(&li->wq);
spin_unlock_bh(&li->lock);
rc = 0; /* order accepted */
rc = SIGP_CC_ORDER_CODE_ACCEPTED;
VCPU_EVENT(vcpu, 4, "sent sigp emerg to cpu %x", cpu_addr);
unlock:
spin_unlock(&fi->lock);
......@@ -92,7 +92,7 @@ static int __sigp_external_call(struct kvm_vcpu *vcpu, u16 cpu_addr)
int rc;
if (cpu_addr >= KVM_MAX_VCPUS)
return 3; /* not operational */
return SIGP_CC_NOT_OPERATIONAL;
inti = kzalloc(sizeof(*inti), GFP_KERNEL);
if (!inti)
......@@ -104,7 +104,7 @@ static int __sigp_external_call(struct kvm_vcpu *vcpu, u16 cpu_addr)
spin_lock(&fi->lock);
li = fi->local_int[cpu_addr];
if (li == NULL) {
rc = 3; /* not operational */
rc = SIGP_CC_NOT_OPERATIONAL;
kfree(inti);
goto unlock;
}
......@@ -115,7 +115,7 @@ static int __sigp_external_call(struct kvm_vcpu *vcpu, u16 cpu_addr)
if (waitqueue_active(&li->wq))
wake_up_interruptible(&li->wq);
spin_unlock_bh(&li->lock);
rc = 0; /* order accepted */
rc = SIGP_CC_ORDER_CODE_ACCEPTED;
VCPU_EVENT(vcpu, 4, "sent sigp ext call to cpu %x", cpu_addr);
unlock:
spin_unlock(&fi->lock);
......@@ -143,7 +143,7 @@ static int __inject_sigp_stop(struct kvm_s390_local_interrupt *li, int action)
out:
spin_unlock_bh(&li->lock);
return 0; /* order accepted */
return SIGP_CC_ORDER_CODE_ACCEPTED;
}
static int __sigp_stop(struct kvm_vcpu *vcpu, u16 cpu_addr, int action)
......@@ -153,12 +153,12 @@ static int __sigp_stop(struct kvm_vcpu *vcpu, u16 cpu_addr, int action)
int rc;
if (cpu_addr >= KVM_MAX_VCPUS)
return 3; /* not operational */
return SIGP_CC_NOT_OPERATIONAL;
spin_lock(&fi->lock);
li = fi->local_int[cpu_addr];
if (li == NULL) {
rc = 3; /* not operational */
rc = SIGP_CC_NOT_OPERATIONAL;
goto unlock;
}
......@@ -182,11 +182,11 @@ static int __sigp_set_arch(struct kvm_vcpu *vcpu, u32 parameter)
switch (parameter & 0xff) {
case 0:
rc = 3; /* not operational */
rc = SIGP_CC_NOT_OPERATIONAL;
break;
case 1:
case 2:
rc = 0; /* order accepted */
rc = SIGP_CC_ORDER_CODE_ACCEPTED;
break;
default:
rc = -EOPNOTSUPP;
......@@ -209,12 +209,12 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
copy_from_guest_absolute(vcpu, &tmp, address + PAGE_SIZE, 1)) {
*reg &= 0xffffffff00000000UL;
*reg |= SIGP_STATUS_INVALID_PARAMETER;
return 1; /* invalid parameter */
return SIGP_CC_STATUS_STORED;
}
inti = kzalloc(sizeof(*inti), GFP_KERNEL);
if (!inti)
return 2; /* busy */
return SIGP_CC_BUSY;
spin_lock(&fi->lock);
if (cpu_addr < KVM_MAX_VCPUS)
......@@ -223,7 +223,7 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
if (li == NULL) {
*reg &= 0xffffffff00000000UL;
*reg |= SIGP_STATUS_INCORRECT_STATE;
rc = 1; /* incorrect state */
rc = SIGP_CC_STATUS_STORED;
kfree(inti);
goto out_fi;
}
......@@ -233,7 +233,7 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
if (!(atomic_read(li->cpuflags) & CPUSTAT_STOPPED)) {
*reg &= 0xffffffff00000000UL;
*reg |= SIGP_STATUS_INCORRECT_STATE;
rc = 1; /* incorrect state */
rc = SIGP_CC_STATUS_STORED;
kfree(inti);
goto out_li;
}
......@@ -245,7 +245,7 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
atomic_set(&li->active, 1);
if (waitqueue_active(&li->wq))
wake_up_interruptible(&li->wq);
rc = 0; /* order accepted */
rc = SIGP_CC_ORDER_CODE_ACCEPTED;
VCPU_EVENT(vcpu, 4, "set prefix of cpu %02x to %x", cpu_addr, address);
out_li:
......@@ -262,21 +262,21 @@ static int __sigp_sense_running(struct kvm_vcpu *vcpu, u16 cpu_addr,
struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
if (cpu_addr >= KVM_MAX_VCPUS)
return 3; /* not operational */
return SIGP_CC_NOT_OPERATIONAL;
spin_lock(&fi->lock);
if (fi->local_int[cpu_addr] == NULL)
rc = 3; /* not operational */
rc = SIGP_CC_NOT_OPERATIONAL;
else {
if (atomic_read(fi->local_int[cpu_addr]->cpuflags)
& CPUSTAT_RUNNING) {
/* running */
rc = 0;
rc = SIGP_CC_ORDER_CODE_ACCEPTED;
} else {
/* not running */
*reg &= 0xffffffff00000000UL;
*reg |= SIGP_STATUS_NOT_RUNNING;
rc = 1;
rc = SIGP_CC_STATUS_STORED;
}
}
spin_unlock(&fi->lock);
......@@ -289,23 +289,23 @@ static int __sigp_sense_running(struct kvm_vcpu *vcpu, u16 cpu_addr,
static int __sigp_restart(struct kvm_vcpu *vcpu, u16 cpu_addr)
{
int rc = 0;
struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
struct kvm_s390_local_interrupt *li;
int rc = SIGP_CC_ORDER_CODE_ACCEPTED;
if (cpu_addr >= KVM_MAX_VCPUS)
return 3; /* not operational */
return SIGP_CC_NOT_OPERATIONAL;
spin_lock(&fi->lock);
li = fi->local_int[cpu_addr];
if (li == NULL) {
rc = 3; /* not operational */
rc = SIGP_CC_NOT_OPERATIONAL;
goto out;
}
spin_lock_bh(&li->lock);
if (li->action_bits & ACTION_STOP_ON_STOP)
rc = 2; /* busy */
rc = SIGP_CC_BUSY;
else
VCPU_EVENT(vcpu, 4, "sigp restart %x to handle userspace",
cpu_addr);
......@@ -380,7 +380,7 @@ int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu)
case SIGP_RESTART:
vcpu->stat.instruction_sigp_restart++;
rc = __sigp_restart(vcpu, cpu_addr);
if (rc == 2) /* busy */
if (rc == SIGP_CC_BUSY)
break;
/* user space must know about restart */
default:
......
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