diff options
| author | Scott Wood <scottwood@freescale.com> | 2011-12-20 15:34:43 +0000 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-04-08 12:51:19 +0300 |
| commit | d30f6e480055e5be12e7a03fd11ea912a451daa5 (patch) | |
| tree | e6c367e6f1da4da67b3a395a1a735a09e52067c0 /arch/powerpc/kvm/timing.h | |
| parent | cfac57847a67c4903f34a77e971521531bbc7c77 (diff) | |
KVM: PPC: booke: category E.HV (GS-mode) support
Chips such as e500mc that implement category E.HV in Power ISA 2.06
provide hardware virtualization features, including a new MSR mode for
guest state. The guest OS can perform many operations without trapping
into the hypervisor, including transitions to and from guest userspace.
Since we can use SRR1[GS] to reliably tell whether an exception came from
guest state, instead of messing around with IVPR, we use DO_KVM similarly
to book3s.
Current issues include:
- Machine checks from guest state are not routed to the host handler.
- The guest can cause a host oops by executing an emulated instruction
in a page that lacks read permission. Existing e500/4xx support has
the same problem.
Includes work by Ashish Kalra <Ashish.Kalra@freescale.com>,
Varun Sethi <Varun.Sethi@freescale.com>, and
Liu Yu <yu.liu@freescale.com>.
Signed-off-by: Scott Wood <scottwood@freescale.com>
[agraf: remove pt_regs usage]
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/powerpc/kvm/timing.h')
| -rw-r--r-- | arch/powerpc/kvm/timing.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/timing.h b/arch/powerpc/kvm/timing.h index 8167d42a776f..bf191e72b2d8 100644 --- a/arch/powerpc/kvm/timing.h +++ b/arch/powerpc/kvm/timing.h @@ -93,6 +93,12 @@ static inline void kvmppc_account_exit_stat(struct kvm_vcpu *vcpu, int type) case SIGNAL_EXITS: vcpu->stat.signal_exits++; break; + case DBELL_EXITS: + vcpu->stat.dbell_exits++; + break; + case GDBELL_EXITS: + vcpu->stat.gdbell_exits++; + break; } } |