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| author |   Alexander Graf <agraf@suse.de> | 2010-07-29 14:47:48 +0200 |
|---|---|---|
| committer |   Avi Kivity <avi@redhat.com> | 2010-10-24 10:50:45 +0200 |
| commit | 2a342ed57756ad5d8af5456959433884367e5ab2 (patch) | |
| tree | bb3f1d707916bc53f48919ace0d0f757c7e2083b /arch/powerpc/kvm/booke.c | |
| parent | KVM: PPC: Convert SPRG[0-4] to shared page (diff) | |
| download | linux-dev-2a342ed57756ad5d8af5456959433884367e5ab2.tar.xz linux-dev-2a342ed57756ad5d8af5456959433884367e5ab2.zip | |
KVM: PPC: Implement hypervisor interface
To communicate with KVM directly we need to plumb some sort of interface
between the guest and KVM. Usually those interfaces use hypercalls.
This hypercall implementation is described in the last patch of the series
in a special documentation file. Please read that for further information.
This patch implements stubs to handle KVM PPC hypercalls on the host and
guest side alike.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/powerpc/kvm/booke.c')
| -rw-r--r-- | arch/powerpc/kvm/booke.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index b2c8c423c4d5..13e0747178e3 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -338,7 +338,15 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, break; case BOOKE_INTERRUPT_SYSCALL: - kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SYSCALL); + if (!(vcpu->arch.shared->msr & MSR_PR) && + (((u32)kvmppc_get_gpr(vcpu, 0)) == KVM_SC_MAGIC_R0)) { + /* KVM PV hypercalls */ + kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu)); + r = RESUME_GUEST; + } else { + /* Guest syscalls */ + kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SYSCALL); + } kvmppc_account_exit(vcpu, SYSCALL_EXITS); r = RESUME_GUEST; break; |