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authorAvi Kivity <avi@redhat.com>2010-07-27 05:30:24 -0400
committerAvi Kivity <avi@redhat.com>2010-10-24 04:52:50 -0400
commit3842d135ff246b6543f1df77f5600e12094a6845 (patch)
tree7b65456a0527fc3ea753a49c528643fd3b52a7d6 /include
parentb0bc3ee2b54fcea0df42cc9aa05103b1ccd89db0 (diff)
KVM: Check for pending events before attempting injection
Instead of blindly attempting to inject an event before each guest entry, check for a possible event first in vcpu->requests. Sites that can trigger event injection are modified to set KVM_REQ_EVENT: - interrupt, nmi window opening - ppr updates - i8259 output changes - local apic irr changes - rflags updates - gif flag set - event set on exit This improves non-injecting entry performance, and sets the stage for non-atomic injection. Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/kvm_host.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 917e68ff5ed2..6022da1490e4 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -39,6 +39,7 @@
39#define KVM_REQ_KVMCLOCK_UPDATE 8 39#define KVM_REQ_KVMCLOCK_UPDATE 8
40#define KVM_REQ_KICK 9 40#define KVM_REQ_KICK 9
41#define KVM_REQ_DEACTIVATE_FPU 10 41#define KVM_REQ_DEACTIVATE_FPU 10
42#define KVM_REQ_EVENT 11
42 43
43#define KVM_USERSPACE_IRQ_SOURCE_ID 0 44#define KVM_USERSPACE_IRQ_SOURCE_ID 0
44 45