summaryrefslogtreecommitdiff
path: root/arch/s390/kvm/kvm-s390.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/s390/kvm/kvm-s390.h')
-rw-r--r--arch/s390/kvm/kvm-s390.h32
1 files changed, 31 insertions, 1 deletions
diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h
index 748fee872323..ec5eee7c25d8 100644
--- a/arch/s390/kvm/kvm-s390.h
+++ b/arch/s390/kvm/kvm-s390.h
@@ -1,7 +1,7 @@
/*
* kvm_s390.h - definition for kvm on s390
*
- * Copyright IBM Corp. 2008
+ * Copyright IBM Corp. 2008,2009
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License (version 2 only)
@@ -9,6 +9,7 @@
*
* Author(s): Carsten Otte <cotte@de.ibm.com>
* Christian Borntraeger <borntraeger@de.ibm.com>
+ * Christian Ehrhardt <ehrhardt@de.ibm.com>
*/
#ifndef ARCH_S390_KVM_S390_H
@@ -18,8 +19,13 @@
#include <linux/kvm.h>
#include <linux/kvm_host.h>
+/* The current code can have up to 256 pages for virtio */
+#define VIRTIODESCSPACE (256ul * 4096ul)
+
typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu);
+/* negativ values are error codes, positive values for internal conditions */
+#define SIE_INTERCEPT_RERUNVCPU (1<<0)
int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu);
#define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\
@@ -50,6 +56,30 @@ int kvm_s390_inject_vm(struct kvm *kvm,
int kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
struct kvm_s390_interrupt *s390int);
int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code);
+int kvm_s390_inject_sigp_stop(struct kvm_vcpu *vcpu, int action);
+
+static inline int kvm_s390_vcpu_get_memsize(struct kvm_vcpu *vcpu)
+{
+ return vcpu->arch.sie_block->gmslm
+ - vcpu->arch.sie_block->gmsor
+ - VIRTIODESCSPACE + 1ul;
+}
+
+static inline void kvm_s390_vcpu_set_mem(struct kvm_vcpu *vcpu)
+{
+ struct kvm_memory_slot *mem;
+
+ down_read(&vcpu->kvm->slots_lock);
+ mem = &vcpu->kvm->memslots[0];
+
+ vcpu->arch.sie_block->gmsor = mem->userspace_addr;
+ vcpu->arch.sie_block->gmslm =
+ mem->userspace_addr +
+ (mem->npages << PAGE_SHIFT) +
+ VIRTIODESCSPACE - 1ul;
+
+ up_read(&vcpu->kvm->slots_lock);
+}
/* implemented in priv.c */
int kvm_s390_handle_b2(struct kvm_vcpu *vcpu);