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authorPaul Mackerras <paulus@ozlabs.org>2018-10-08 16:31:04 +1100
committerMichael Ellerman <mpe@ellerman.id.au>2018-10-09 16:04:27 +1100
commit360cae313702cdd0b90f82c261a8302fecef030a (patch)
treef5964bcafc1ccff72298a64d9fb8e1acea1830b0 /arch/powerpc/include/asm/kvm_book3s.h
parent8e3f5fc1045dc49fd175b978c5457f5f51e7a2ce (diff)
KVM: PPC: Book3S HV: Nested guest entry via hypercall
This adds a new hypercall, H_ENTER_NESTED, which is used by a nested hypervisor to enter one of its nested guests. The hypercall supplies register values in two structs. Those values are copied by the level 0 (L0) hypervisor (the one which is running in hypervisor mode) into the vcpu struct of the L1 guest, and then the guest is run until an interrupt or error occurs which needs to be reported to L1 via the hypercall return value. Currently this assumes that the L0 and L1 hypervisors are the same endianness, and the structs passed as arguments are in native endianness. If they are of different endianness, the version number check will fail and the hcall will be rejected. Nested hypervisors do not support indep_threads_mode=N, so this adds code to print a warning message if the administrator has set indep_threads_mode=N, and treat it as Y. Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@ozlabs.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/kvm_book3s.h')
-rw-r--r--arch/powerpc/include/asm/kvm_book3s.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h
index 43f212e38b89..093fd700da32 100644
--- a/arch/powerpc/include/asm/kvm_book3s.h
+++ b/arch/powerpc/include/asm/kvm_book3s.h
@@ -280,6 +280,13 @@ void kvmhv_vm_nested_init(struct kvm *kvm);
long kvmhv_set_partition_table(struct kvm_vcpu *vcpu);
void kvmhv_set_ptbl_entry(unsigned int lpid, u64 dw0, u64 dw1);
void kvmhv_release_all_nested(struct kvm *kvm);
+long kvmhv_enter_nested_guest(struct kvm_vcpu *vcpu);
+int kvmhv_run_single_vcpu(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu,
+ u64 time_limit, unsigned long lpcr);
+void kvmhv_save_hv_regs(struct kvm_vcpu *vcpu, struct hv_guest_state *hr);
+void kvmhv_restore_hv_return_state(struct kvm_vcpu *vcpu,
+ struct hv_guest_state *hr);
+long int kvmhv_nested_page_fault(struct kvm_vcpu *vcpu);
void kvmppc_giveup_fac(struct kvm_vcpu *vcpu, ulong fac);