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authorChristian Borntraeger <borntraeger@de.ibm.com>2020-02-03 11:13:37 +0300
committerChristian Borntraeger <borntraeger@de.ibm.com>2020-02-27 21:47:11 +0300
commit0890ddea1a90e57114b5704cd560192c743f3d2e (patch)
tree82863d7a9bed30729220bd9a5ae8fc23b349496a /arch/s390/include/asm/kvm_host.h
parent201ae986ead7582f8d9506a5d11459b280b954c8 (diff)
downloadlinux-0890ddea1a90e57114b5704cd560192c743f3d2e.tar.xz
KVM: s390: protvirt: Add SCLP interrupt handling
The sclp interrupt is kind of special. The ultravisor polices that we do not inject an sclp interrupt with payload if no sccb is outstanding. On the other hand we have "asynchronous" event interrupts, e.g. for console input. We separate both variants into sclp interrupt and sclp event interrupt. The sclp interrupt is masked until a previous servc instruction has finished (sie exit 108). [frankja@linux.ibm.com: factoring out write_sclp] Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/kvm_host.h')
-rw-r--r--arch/s390/include/asm/kvm_host.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index a13dc77f8b07..ba3364b37159 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -518,6 +518,7 @@ enum irq_types {
IRQ_PEND_PFAULT_INIT,
IRQ_PEND_EXT_HOST,
IRQ_PEND_EXT_SERVICE,
+ IRQ_PEND_EXT_SERVICE_EV,
IRQ_PEND_EXT_TIMING,
IRQ_PEND_EXT_CPU_TIMER,
IRQ_PEND_EXT_CLOCK_COMP,
@@ -562,6 +563,7 @@ enum irq_types {
(1UL << IRQ_PEND_EXT_TIMING) | \
(1UL << IRQ_PEND_EXT_HOST) | \
(1UL << IRQ_PEND_EXT_SERVICE) | \
+ (1UL << IRQ_PEND_EXT_SERVICE_EV) | \
(1UL << IRQ_PEND_VIRTIO) | \
(1UL << IRQ_PEND_PFAULT_INIT) | \
(1UL << IRQ_PEND_PFAULT_DONE))
@@ -582,7 +584,8 @@ enum irq_types {
(1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
(1UL << IRQ_PEND_EXT_EMERGENCY) | \
(1UL << IRQ_PEND_EXT_EXTERNAL) | \
- (1UL << IRQ_PEND_EXT_SERVICE))
+ (1UL << IRQ_PEND_EXT_SERVICE) | \
+ (1UL << IRQ_PEND_EXT_SERVICE_EV))
struct kvm_s390_interrupt_info {
struct list_head list;
@@ -642,6 +645,7 @@ struct kvm_s390_local_interrupt {
struct kvm_s390_float_interrupt {
unsigned long pending_irqs;
+ unsigned long masked_irqs;
spinlock_t lock;
struct list_head lists[FIRQ_LIST_COUNT];
int counters[FIRQ_MAX_COUNT];