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| author |   Dominik Dingel <dingel@linux.vnet.ibm.com> | 2013-10-07 17:11:48 +0200 |
|---|---|---|
| committer |   Christian Borntraeger <borntraeger@de.ibm.com> | 2014-01-30 13:11:02 +0100 |
| commit | 3c038e6be0e299d4d3762d0a9a29f02de6e04991 (patch) | |
| tree | 06f0c3a8debccb32b2388d57990aba5f4e363ea3 /arch/s390/include/uapi | |
| parent | KVM: async_pf: Allow to wait for outstanding work (diff) | |
| download | linux-dev-3c038e6be0e299d4d3762d0a9a29f02de6e04991.tar.xz linux-dev-3c038e6be0e299d4d3762d0a9a29f02de6e04991.zip | |
KVM: async_pf: Async page fault support on s390
This patch enables async page faults for s390 kvm guests.
It provides the userspace API to enable and disable_wait this feature.
The disable_wait will enforce that the feature is off by waiting on it.
Also it includes the diagnose code, called by the guest to enable async page faults.
The async page faults will use an already existing guest interface for this
purpose, as described in "CP Programming Services (SC24-6084)".
Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/include/uapi')
| -rw-r--r-- | arch/s390/include/uapi/asm/kvm.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/include/uapi/asm/kvm.h b/arch/s390/include/uapi/asm/kvm.h index 058b178391d4..ccfd0b1d056d 100644 --- a/arch/s390/include/uapi/asm/kvm.h +++ b/arch/s390/include/uapi/asm/kvm.h @@ -20,6 +20,8 @@ #define KVM_DEV_FLIC_GET_ALL_IRQS 1 #define KVM_DEV_FLIC_ENQUEUE 2 #define KVM_DEV_FLIC_CLEAR_IRQS 3 +#define KVM_DEV_FLIC_APF_ENABLE 4 +#define KVM_DEV_FLIC_APF_DISABLE_WAIT 5 /* * We can have up to 4*64k pending subchannels + 8 adapter interrupts, * as well as up to ASYNC_PF_PER_VCPU*KVM_MAX_VCPUS pfault done interrupts. |