diff options
| author | Alexander Graf <agraf@suse.de> | 2010-08-30 10:44:15 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-10-24 10:52:19 +0200 |
| commit | 17bd158006a33615270f9dba15c62f49bd447435 (patch) | |
| tree | 05f60fb73b8f5fed8045220fe8a8adecde672dde /arch/powerpc/include/asm/kvm.h | |
| parent | 591bd8e7b4c8b9246d7a1c81ffbd28e35dc5de4e (diff) | |
KVM: PPC: Implement Level interrupts on Book3S
The current interrupt logic is just completely broken. We get a notification
from user space, telling us that an interrupt is there. But then user space
expects us that we just acknowledge an interrupt once we deliver it to the
guest.
This is not how real hardware works though. On real hardware, the interrupt
controller pulls the external interrupt line until it gets notified that the
interrupt was received.
So in reality we have two events: pulling and letting go of the interrupt line.
To maintain backwards compatibility, I added a new request for the pulling
part. The letting go part was implemented earlier already.
With this in place, we can now finally start guests that do not randomly stall
and stop to work at random times.
This patch implements above logic for Book3S.
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc/include/asm/kvm.h')
| -rw-r--r-- | arch/powerpc/include/asm/kvm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/kvm.h b/arch/powerpc/include/asm/kvm.h index 6c5547d82bbe..18ea6963ad77 100644 --- a/arch/powerpc/include/asm/kvm.h +++ b/arch/powerpc/include/asm/kvm.h @@ -86,5 +86,6 @@ struct kvm_guest_debug_arch { #define KVM_INTERRUPT_SET -1U #define KVM_INTERRUPT_UNSET -2U +#define KVM_INTERRUPT_SET_LEVEL -3U #endif /* __LINUX_KVM_POWERPC_H */ |