diff options
| author | Scott Wood <scottwood@freescale.com> | 2011-11-17 12:39:59 +0000 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-03-05 14:52:27 +0200 |
| commit | dfd4d47e9a71c5a35eb67a44cd311efbe1846b7e (patch) | |
| tree | 1115128a884dabf7d853466b82c553561e4f7b27 /arch/powerpc/kvm/book3s.c | |
| parent | b59049720dd95021dfe0d9f4e1fa9458a67cfe29 (diff) | |
KVM: PPC: booke: Improve timer register emulation
Decrementers are now properly driven by TCR/TSR, and the guest
has full read/write access to these registers.
The decrementer keeps ticking (and setting the TSR bit) regardless of
whether the interrupts are enabled with TCR.
The decrementer stops at zero, rather than going negative.
Decrementers (and FITs, once implemented) are delivered as
level-triggered interrupts -- dequeued when the TSR bit is cleared, not
on delivery.
Signed-off-by: Liu Yu <yu.liu@freescale.com>
[scottwood@freescale.com: significant changes]
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/powerpc/kvm/book3s.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c index 5398744cd77..6bf7e0582c5 100644 --- a/arch/powerpc/kvm/book3s.c +++ b/arch/powerpc/kvm/book3s.c @@ -515,3 +515,11 @@ out: mutex_unlock(&kvm->slots_lock); return r; } + +void kvmppc_decrementer_func(unsigned long data) +{ + struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data; + + kvmppc_core_queue_dec(vcpu); + kvm_vcpu_kick(vcpu); +} |