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authorClaudio Imbrenda <imbrenda@linux.vnet.ibm.com>2016-08-04 15:54:42 (GMT)
committerChristian Borntraeger <borntraeger@de.ibm.com>2017-06-22 10:41:05 (GMT)
commit190df4a212a708fdd18f6cabfdd82594c91fdf25 (patch)
tree14e26591a41b51f4c0f779980d801b63d52c4443 /arch/s390/include/uapi
parent865279c53ca9d88718d974bb014b2c6ce259ac75 (diff)
KVM: s390: CMMA tracking, ESSA emulation, migration mode
* Add a migration state bitmap to keep track of which pages have dirty CMMA information. * Disable CMMA by default, so we can track if it's used or not. Enable it on first use like we do for storage keys (unless we are doing a migration). * Creates a VM attribute to enter and leave migration mode. * In migration mode, CMMA is disabled in the SIE block, so ESSA is always interpreted and emulated in software. * Free the migration state on VM destroy. Signed-off-by: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/include/uapi')
-rw-r--r--arch/s390/include/uapi/asm/kvm.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/s390/include/uapi/asm/kvm.h b/arch/s390/include/uapi/asm/kvm.h
index 3dd2a1d..d6879a9 100644
--- a/arch/s390/include/uapi/asm/kvm.h
+++ b/arch/s390/include/uapi/asm/kvm.h
@@ -70,6 +70,7 @@ struct kvm_s390_io_adapter_req {
#define KVM_S390_VM_TOD 1
#define KVM_S390_VM_CRYPTO 2
#define KVM_S390_VM_CPU_MODEL 3
+#define KVM_S390_VM_MIGRATION 4
/* kvm attributes for mem_ctrl */
#define KVM_S390_VM_MEM_ENABLE_CMMA 0
@@ -151,6 +152,11 @@ struct kvm_s390_vm_cpu_subfunc {
#define KVM_S390_VM_CRYPTO_DISABLE_AES_KW 2
#define KVM_S390_VM_CRYPTO_DISABLE_DEA_KW 3
+/* kvm attributes for migration mode */
+#define KVM_S390_VM_MIGRATION_STOP 0
+#define KVM_S390_VM_MIGRATION_START 1
+#define KVM_S390_VM_MIGRATION_STATUS 2
+
/* for KVM_GET_REGS and KVM_SET_REGS */
struct kvm_regs {
/* general purpose regs for s390 */

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