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| author | Michael Mueller <mimu@linux.vnet.ibm.com> | 2017-08-31 11:10:28 +0200 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2018-01-26 11:12:09 +0100 |
| commit | 2496c8e7fe9270bde5e125729c193120e7fa8c67 (patch) | |
| tree | a409449ab08793045117fa56b05a126762871770 /arch/s390/kvm | |
| parent | d7c5cb0105ddeff56694f4c6222ee7221824bad3 (diff) | |
| download | linux-2496c8e7fe9270bde5e125729c193120e7fa8c67.tar.gz linux-2496c8e7fe9270bde5e125729c193120e7fa8c67.tar.bz2 linux-2496c8e7fe9270bde5e125729c193120e7fa8c67.zip | |
KVM: s390: abstract adapter interruption word generation from ISC
The function isc_to_int_word() allows the generation of interruption
words for adapter interrupts.
Signed-off-by: Michael Mueller <mimu@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm')
| -rw-r--r-- | arch/s390/kvm/interrupt.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c index f293c956e6db..a0ded3a23a5e 100644 --- a/arch/s390/kvm/interrupt.c +++ b/arch/s390/kvm/interrupt.c @@ -198,6 +198,11 @@ static uint64_t isc_to_isc_bits(int isc) return (0x80 >> isc) << 24; } +static inline u32 isc_to_int_word(u8 isc) +{ + return ((u32)isc << 27) | 0x80000000; +} + static inline u8 int_word_to_isc(u32 int_word) { return (int_word & 0x38000000) >> 27; @@ -992,7 +997,7 @@ static int __must_check __deliver_io(struct kvm_vcpu *vcpu, */ VCPU_EVENT(vcpu, 4, "%s isc %u", "deliver: I/O (AI/gisa)", isc); memset(&io, 0, sizeof(io)); - io.io_int_word = (isc << 27) | 0x80000000; + io.io_int_word = isc_to_int_word(isc); vcpu->stat.deliver_io_int++; trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, KVM_S390_INT_IO(1, 0, 0, 0), @@ -2299,7 +2304,7 @@ static int kvm_s390_inject_airq(struct kvm *kvm, struct kvm_s390_interrupt s390int = { .type = KVM_S390_INT_IO(1, 0, 0, 0), .parm = 0, - .parm64 = (adapter->isc << 27) | 0x80000000, + .parm64 = isc_to_int_word(adapter->isc), }; int ret = 0; |