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path: root/arch/s390/kvm/sigp.c
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Diffstat (limited to 'arch/s390/kvm/sigp.c')
-rw-r--r--arch/s390/kvm/sigp.c77
1 files changed, 42 insertions, 35 deletions
diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c
index 1ab2ce1611c5..56f80e1f98f7 100644
--- a/arch/s390/kvm/sigp.c
+++ b/arch/s390/kvm/sigp.c
@@ -26,19 +26,23 @@ 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 */
- } else {
+ & (CPUSTAT_ECALL_PEND | CPUSTAT_STOPPED)))
+ rc = SIGP_CC_ORDER_CODE_ACCEPTED;
+ else {
*reg &= 0xffffffff00000000UL;
- *reg |= SIGP_STATUS_STOPPED;
- rc = 1; /* status stored */
+ if (atomic_read(fi->local_int[cpu_addr]->cpuflags)
+ & CPUSTAT_ECALL_PEND)
+ *reg |= SIGP_STATUS_EXT_CALL_PENDING;
+ if (atomic_read(fi->local_int[cpu_addr]->cpuflags)
+ & CPUSTAT_STOPPED)
+ *reg |= SIGP_STATUS_STOPPED;
+ rc = SIGP_CC_STATUS_STORED;
}
spin_unlock(&fi->lock);
@@ -54,7 +58,7 @@ 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 +70,7 @@ 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 +81,7 @@ 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 +96,7 @@ 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 +108,7 @@ 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 +119,7 @@ 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 +147,7 @@ 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 +157,12 @@ 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 +186,11 @@ 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;
@@ -207,21 +211,23 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
address = address & 0x7fffe000u;
if (copy_from_guest_absolute(vcpu, &tmp, address, 1) ||
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)
li = fi->local_int[cpu_addr];
if (li == NULL) {
- rc = 1; /* incorrect state */
- *reg &= SIGP_STATUS_INCORRECT_STATE;
+ *reg &= 0xffffffff00000000UL;
+ *reg |= SIGP_STATUS_INCORRECT_STATE;
+ rc = SIGP_CC_STATUS_STORED;
kfree(inti);
goto out_fi;
}
@@ -229,8 +235,9 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
spin_lock_bh(&li->lock);
/* cpu must be in stopped state */
if (!(atomic_read(li->cpuflags) & CPUSTAT_STOPPED)) {
- rc = 1; /* incorrect state */
- *reg &= SIGP_STATUS_INCORRECT_STATE;
+ *reg &= 0xffffffff00000000UL;
+ *reg |= SIGP_STATUS_INCORRECT_STATE;
+ rc = SIGP_CC_STATUS_STORED;
kfree(inti);
goto out_li;
}
@@ -242,7 +249,7 @@ 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:
@@ -259,21 +266,21 @@ 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 = 1;
+ rc = SIGP_CC_ORDER_CODE_ACCEPTED;
} else {
/* not running */
*reg &= 0xffffffff00000000UL;
*reg |= SIGP_STATUS_NOT_RUNNING;
- rc = 0;
+ rc = SIGP_CC_STATUS_STORED;
}
}
spin_unlock(&fi->lock);
@@ -286,23 +293,23 @@ 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);
@@ -377,7 +384,7 @@ 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:
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 15:06:51 +0000