Commit 5fc87407 authored by Alexander Graf's avatar Alexander Graf Committed by Avi Kivity
Browse files

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: default avatarAlexander Graf <agraf@suse.de>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent e8508940

arch/powerpc/include/asm/kvm_para.h

+2 −0
Original line number Diff line number Diff line
@@ -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

arch/powerpc/kvm/powerpc.c

+11 −0
Original line number Diff line number Diff line
@@ -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);