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authorBharata B Rao2019-11-25 08:36:30 +0530
committerPaul Mackerras2019-11-28 17:02:31 +1100
commit22945688acd4d0ec2620b0670a53110401ed9c59 (patch)
tree389ea049e1286364c1ccafde9c6c307eb1e5ab23 /arch/powerpc/include/asm
parentc32622575dd0ecb6fd0b41e3a451bd58152971ba (diff)
KVM: PPC: Book3S HV: Support reset of secure guest
Add support for reset of secure guest via a new ioctl KVM_PPC_SVM_OFF. This ioctl will be issued by QEMU during reset and includes the the following steps: - Release all device pages of the secure guest. - Ask UV to terminate the guest via UV_SVM_TERMINATE ucall - Unpin the VPA pages so that they can be migrated back to secure side when guest becomes secure again. This is required because pinned pages can't be migrated. - Reinit the partition scoped page tables After these steps, guest is ready to issue UV_ESM call once again to switch to secure mode. Signed-off-by: Bharata B Rao <bharata@linux.ibm.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> [Implementation of uv_svm_terminate() and its call from guest shutdown path] Signed-off-by: Ram Pai <linuxram@us.ibm.com> [Unpinning of VPA pages] Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Diffstat (limited to 'arch/powerpc/include/asm')
-rw-r--r--arch/powerpc/include/asm/kvm_ppc.h1
-rw-r--r--arch/powerpc/include/asm/ultravisor-api.h1
-rw-r--r--arch/powerpc/include/asm/ultravisor.h5
3 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h
index d63f649fe713..3d2f871241a8 100644
--- a/arch/powerpc/include/asm/kvm_ppc.h
+++ b/arch/powerpc/include/asm/kvm_ppc.h
@@ -322,6 +322,7 @@ struct kvmppc_ops {
int size);
int (*store_to_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr,
int size);
+ int (*svm_off)(struct kvm *kvm);
};
extern struct kvmppc_ops *kvmppc_hv_ops;
diff --git a/arch/powerpc/include/asm/ultravisor-api.h b/arch/powerpc/include/asm/ultravisor-api.h
index 4b0d044caa2a..b66f6db7be6c 100644
--- a/arch/powerpc/include/asm/ultravisor-api.h
+++ b/arch/powerpc/include/asm/ultravisor-api.h
@@ -34,5 +34,6 @@
#define UV_UNSHARE_PAGE 0xF134
#define UV_UNSHARE_ALL_PAGES 0xF140
#define UV_PAGE_INVAL 0xF138
+#define UV_SVM_TERMINATE 0xF13C
#endif /* _ASM_POWERPC_ULTRAVISOR_API_H */
diff --git a/arch/powerpc/include/asm/ultravisor.h b/arch/powerpc/include/asm/ultravisor.h
index b8e59b7b4ac8..790b0e63681f 100644
--- a/arch/powerpc/include/asm/ultravisor.h
+++ b/arch/powerpc/include/asm/ultravisor.h
@@ -77,4 +77,9 @@ static inline int uv_page_inval(u64 lpid, u64 gpa, u64 page_shift)
return ucall_norets(UV_PAGE_INVAL, lpid, gpa, page_shift);
}
+static inline int uv_svm_terminate(u64 lpid)
+{
+ return ucall_norets(UV_SVM_TERMINATE, lpid);
+}
+
#endif /* _ASM_POWERPC_ULTRAVISOR_H */