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KVM: s390: infrastructure to kick vcpus out of guest state

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To ensure vcpu's come out of guest context in certain cases this patch adds a
s390 specific way to kick them out of guest context. Currently it kicks them
out to rerun the vcpu_run path in the s390 code, but the mechanism itself is
expandable and with a new flag we could also add e.g. kicks to userspace etc.

Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Christian Ehrhardt
2009-05-20 15:34:55 +02:00
committed by Avi Kivity
parent 3032b925f0
commit 9ace903d17
5 changed files with 55 additions and 28 deletions
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5
arch/s390/include/asm/kvm_host.h
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@@ -182,8 +182,9 @@ struct kvm_s390_interrupt_info {
};
/* for local_interrupt.action_flags */
#define ACTION_STORE_ON_STOP 1
#define ACTION_STOP_ON_STOP 2
#define ACTION_STORE_ON_STOP (1<<0)
#define ACTION_STOP_ON_STOP (1<<1)
#define ACTION_RELOADVCPU_ON_STOP (1<<2)
struct kvm_s390_local_interrupt {
spinlock_t lock;