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| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2013-07-15 13:36:01 +0200 |
|---|---|---|
| committer | Cornelia Huck <cornelia.huck@de.ibm.com> | 2014-03-21 13:43:00 +0100 |
| commit | 84223598778ba08041f4297fda485df83414d57e (patch) | |
| tree | bd93b83a13cc5cd1f6781bf681161fb3982548c5 /arch/s390/include | |
| parent | 841b91c584b6d1e2a2cb508bd2d0236cd37e1750 (diff) | |
| download | op-kernel-dev-84223598778ba08041f4297fda485df83414d57e.zip op-kernel-dev-84223598778ba08041f4297fda485df83414d57e.tar.gz | |
KVM: s390: irq routing for adapter interrupts.
Introduce a new interrupt class for s390 adapter interrupts and enable
irqfds for s390.
This is depending on a new s390 specific vm capability, KVM_CAP_S390_IRQCHIP,
that needs to be enabled by userspace.
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Diffstat (limited to 'arch/s390/include')
| -rw-r--r-- | arch/s390/include/asm/kvm_host.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h index 0d52352..dd39337 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -24,6 +24,14 @@ #define KVM_MAX_VCPUS 64 #define KVM_USER_MEM_SLOTS 32 +/* + * These seem to be used for allocating ->chip in the routing table, + * which we don't use. 4096 is an out-of-thin-air value. If we need + * to look at ->chip later on, we'll need to revisit this. + */ +#define KVM_NR_IRQCHIPS 1 +#define KVM_IRQCHIP_NUM_PINS 4096 + struct sca_entry { atomic_t scn; __u32 reserved; @@ -274,6 +282,7 @@ struct kvm_arch{ struct kvm_device *flic; struct gmap *gmap; int css_support; + int use_irqchip; struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS]; }; |
