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| author | Avi Kivity <avi@redhat.com> | 2010-07-27 12:30:24 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-10-24 10:52:50 +0200 |
| commit | 3842d135ff246b6543f1df77f5600e12094a6845 (patch) | |
| tree | 7b65456a0527fc3ea753a49c528643fd3b52a7d6 /include/linux/kvm_host.h | |
| parent | b0bc3ee2b54fcea0df42cc9aa05103b1ccd89db0 (diff) | |
| download | lwn-3842d135ff246b6543f1df77f5600e12094a6845.tar.gz lwn-3842d135ff246b6543f1df77f5600e12094a6845.zip | |
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/linux/kvm_host.h')
| -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 917e68ff5ed2..6022da1490e4 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -39,6 +39,7 @@ #define KVM_REQ_KVMCLOCK_UPDATE 8 #define KVM_REQ_KICK 9 #define KVM_REQ_DEACTIVATE_FPU 10 +#define KVM_REQ_EVENT 11 #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |