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| author | Avi Kivity <avi@redhat.com> | 2011-09-20 13:43:14 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-09-25 19:52:59 +0300 |
| commit | 7460fb4a340033107530df19e7e125bd0969bfb2 (patch) | |
| tree | 02f2aedd48af0a2e316b28d6a5b21a7a96442ac6 /include | |
| parent | 1cd196ea42c526549ded4fd29809c3fdaa4a7f41 (diff) | |
| download | linux-stable-7460fb4a340033107530df19e7e125bd0969bfb2.tar.gz linux-stable-7460fb4a340033107530df19e7e125bd0969bfb2.tar.bz2 linux-stable-7460fb4a340033107530df19e7e125bd0969bfb2.zip | |
KVM: Fix simultaneous NMIs
If simultaneous NMIs happen, we're supposed to queue the second
and next (collapsing them), but currently we sometimes collapse
the second into the first.
Fix by using a counter for pending NMIs instead of a bool; since
the counter limit depends on whether the processor is currently
in an NMI handler, which can only be checked in vcpu context
(via the NMI mask), we add a new KVM_REQ_NMI to request recalculation
of the counter.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/kvm_host.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 2a414f66af28..d52623199978 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -49,6 +49,7 @@ #define KVM_REQ_EVENT 11 #define KVM_REQ_APF_HALT 12 #define KVM_REQ_STEAL_UPDATE 13 +#define KVM_REQ_NMI 14 #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |