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s390x/flic: introduce inject_airq callback

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Let's introduce a specialized way to inject adapter interrupts that,
unlike the common interrupt injection method, allows to take the
characteristics of the adapter into account.

For adapters subject to AIS facility:
- for non-kvm case, we handle the suppression for a given ISC in QEMU.
- for kvm case, we pass adapter id to kvm to do airq injection.

Add add tracepoint for suppressed airq and suppressing airq.

Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com>
Signed-off-by: Fei Li <sherrylf@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Yi Min Zhao 2017-02-17 15:00:59 +08:00 • committed by Christian Borntraeger
parent 6c1dd652a6
commit 1622ffd515
4 changed files with 51 additions and 0 deletions
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2
include/hw/s390x/s390_flic.h
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@ -64,6 +64,8 @@ typedef struct S390FLICStateClass {
int (*clear_io_irq)(S390FLICState *fs, uint16_t subchannel_id,
uint16_t subchannel_nr);
int (*modify_ais_mode)(S390FLICState *fs, uint8_t isc, uint16_t mode);
int (*inject_airq)(S390FLICState *fs, uint8_t type, uint8_t isc,
uint8_t flags);
} S390FLICStateClass;
#define TYPE_KVM_S390_FLIC "s390-flic-kvm"