Now that we have the shared page in place and the MMU code knows about
the magic page, we can expose that capability to the guest!
Signed-off-by: Alexander Graf <agraf@xxxxxxx>
---
v2 -> v3:
- align hypercalls to in/out of ePAPR
---
arch/powerpc/include/asm/kvm_para.h | 2 ++
arch/powerpc/kvm/powerpc.c | 11 +++++++++++
2 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/include/asm/kvm_para.h b/arch/powerpc/include/asm/kvm_para.h
index 0653b0d..7438ab3 100644
--- a/arch/powerpc/include/asm/kvm_para.h
+++ b/arch/powerpc/include/asm/kvm_para.h
@@ -45,6 +45,8 @@ struct kvm_vcpu_arch_shared {
#define HC_EV_SUCCESS 0
#define HC_EV_UNIMPLEMENTED 12
+#define KVM_FEATURE_MAGIC_PAGE 1
+
#ifdef __KERNEL__
#ifdef CONFIG_KVM_GUEST
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index a4cf4b4..fecfe04 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -61,8 +61,19 @@ int kvmppc_kvm_pv(struct kvm_vcpu *vcpu)
}
switch (nr) {
+ case HC_VENDOR_KVM | KVM_HC_PPC_MAP_MAGIC_PAGE:
+ {
+ vcpu->arch.magic_page_pa = param1;
+ vcpu->arch.magic_page_ea = param2;
+
+ r = HC_EV_SUCCESS;
+ break;
+ }
case HC_VENDOR_KVM | KVM_HC_FEATURES:
r = HC_EV_SUCCESS;
+#if defined(CONFIG_PPC_BOOK3S) /* XXX Missing magic page on BookE */
+ r2 |= (1 << KVM_FEATURE_MAGIC_PAGE);
+#endif
/* Second return value is in r4 */
kvmppc_set_gpr(vcpu, 4, r2);
--
1.6.0.2
--
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