From 5fc87407b55f5799418f4dc5931232c2bc06d077 Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Thu, 29 Jul 2010 14:47:55 +0200 Subject: [PATCH] KVM: PPC: Expose magic page support to guest 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 Signed-off-by: Avi Kivity --- arch/powerpc/include/asm/kvm_para.h | 2 ++ arch/powerpc/kvm/powerpc.c | 11 +++++++++++ 2 files changed, 13 insertions(+) diff --git a/arch/powerpc/include/asm/kvm_para.h b/arch/powerpc/include/asm/kvm_para.h index 0653b0d238b4..7438ab360120 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 a4cf4b47e232..fecfe043458d 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); -- 2.20.1