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| author | Carsten Otte <cotte@de.ibm.com> | 2012-01-04 09:25:22 (GMT) |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-03-05 12:52:19 (GMT) |
| commit | e168bf8de33e16a909df2401af1f7d419c5780de (patch) | |
| tree | 49dee8cc76e65eb1347895a6cb8f8843f690066d /arch/s390/kvm/kvm-s390.h | |
| parent | 27e0393f15fc8bc855c6a888387ff5ffd2181089 (diff) | |
| download | linux-fsl-qoriq-e168bf8de33e16a909df2401af1f7d419c5780de.tar.xz | |
KVM: s390: ucontrol: export page faults to user
This patch introduces a new exit reason in the kvm_run structure
named KVM_EXIT_S390_UCONTROL. This exit indicates, that a virtual cpu
has regognized a fault on the host page table. The idea is that
userspace can handle this fault by mapping memory at the fault
location into the cpu's address space and then continue to run the
virtual cpu.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/s390/kvm/kvm-s390.h')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h index 45b236a..62aa5f1 100644 --- a/arch/s390/kvm/kvm-s390.h +++ b/arch/s390/kvm/kvm-s390.h @@ -26,6 +26,7 @@ typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu); /* negativ values are error codes, positive values for internal conditions */ #define SIE_INTERCEPT_RERUNVCPU (1<<0) +#define SIE_INTERCEPT_UCONTROL (1<<1) int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu); #define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\ |