Merge tag 'kvm-s390-next-5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into kvm-next

KVM: s390: Features for 5.1

- Clarify KVM related kernel messages
- Interrupt cleanup
- Introduction of the Guest Information Block (GIB)
- Preparation for processor subfunctions in cpu model

1 files changed, 34 insertions, 3 deletions

diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index c2b8c8c6c9be..c47e22bba87f 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -591,7 +591,6 @@ struct kvm_s390_float_interrupt {
 	struct kvm_s390_mchk_info mchk;
 	struct kvm_s390_ext_info srv_signal;
 	int next_rr_cpu;
-	unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
 	struct mutex ais_lock;
 	u8 simm;
 	u8 nimm;
@@ -712,6 +711,7 @@ struct s390_io_adapter {
 struct kvm_s390_cpu_model {
 	/* facility mask supported by kvm & hosting machine */
 	__u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
+	struct kvm_s390_vm_cpu_subfunc subfuncs;
 	/* facility list requested by guest (in dma page) */
 	__u64 *fac_list;
 	u64 cpuid;
@@ -782,9 +782,21 @@ struct kvm_s390_gisa {
 			u8  reserved03[11];
 			u32 airq_count;
 		} g1;
+		struct {
+			u64 word[4];
+		} u64;
 	};
 };
 
+struct kvm_s390_gib {
+	u32 alert_list_origin;
+	u32 reserved01;
+	u8:5;
+	u8  nisc:3;
+	u8  reserved03[3];
+	u32 reserved04[5];
+};
+
 /*
  * sie_page2 has to be allocated as DMA because fac_list, crycb and
  * gisa need 31bit addresses in the sie control block.
@@ -793,7 +805,8 @@ struct sie_page2 {
 	__u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64];	/* 0x0000 */
 	struct kvm_s390_crypto_cb crycb;		/* 0x0800 */
 	struct kvm_s390_gisa gisa;			/* 0x0900 */
-	u8 reserved920[0x1000 - 0x920];			/* 0x0920 */
+	struct kvm *kvm;				/* 0x0920 */
+	u8 reserved928[0x1000 - 0x928];			/* 0x0928 */
 };
 
 struct kvm_s390_vsie {
@@ -804,6 +817,20 @@ struct kvm_s390_vsie {
 	struct page *pages[KVM_MAX_VCPUS];
 };
 
+struct kvm_s390_gisa_iam {
+	u8 mask;
+	spinlock_t ref_lock;
+	u32 ref_count[MAX_ISC + 1];
+};
+
+struct kvm_s390_gisa_interrupt {
+	struct kvm_s390_gisa *origin;
+	struct kvm_s390_gisa_iam alert;
+	struct hrtimer timer;
+	u64 expires;
+	DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS);
+};
+
 struct kvm_arch{
 	void *sca;
 	int use_esca;
@@ -837,7 +864,8 @@ struct kvm_arch{
 	atomic64_t cmma_dirty_pages;
 	/* subset of available cpu features enabled by user space */
 	DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
-	struct kvm_s390_gisa *gisa;
+	DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS);
+	struct kvm_s390_gisa_interrupt gisa_int;
 };
 
 #define KVM_HVA_ERR_BAD		(-1UL)
@@ -871,6 +899,9 @@ void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm,
 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
 extern char sie_exit;
 
+extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
+extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
+
 static inline void kvm_arch_hardware_disable(void) {}
 static inline void kvm_arch_check_processor_compat(void *rtn) {}
 static inline void kvm_arch_sync_events(struct kvm *kvm) {}