KVM: s390: CMMA tracking, ESSA emulation, migration mode

[karo-tx-linux.git] / arch / s390 / include / asm / kvm_host.h

diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index 426614a882a9b12a71c96f06607f30e6b345cd0d..a8cafed79eb44528a125b4c0230708871146e4e7 100644 (file)
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -45,6 +45,8 @@
 #define KVM_REQ_ENABLE_IBS         8
 #define KVM_REQ_DISABLE_IBS        9
 #define KVM_REQ_ICPT_OPEREXC       10
+#define KVM_REQ_START_MIGRATION   11
+#define KVM_REQ_STOP_MIGRATION    12
 
 #define SIGP_CTRL_C            0x80
 #define SIGP_CTRL_SCN_MASK     0x3f
@@ -691,6 +693,12 @@ struct kvm_s390_vsie {
        struct page *pages[KVM_MAX_VCPUS];
 };
 
+struct kvm_s390_migration_state {
+       unsigned long bitmap_size;      /* in bits (number of guest pages) */
+       atomic64_t dirty_pages;         /* number of dirty pages */
+       unsigned long *pgste_bitmap;
+};
+
 struct kvm_arch{
        void *sca;
        int use_esca;
@@ -718,6 +726,7 @@ struct kvm_arch{
        struct kvm_s390_crypto crypto;
        struct kvm_s390_vsie vsie;
        u64 epoch;
+       struct kvm_s390_migration_state *migration_state;
        /* subset of available cpu features enabled by user space */
        DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
 };