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Diffstat (limited to 'arch/s390/kvm/gaccess.h')
-rw-r--r--arch/s390/kvm/gaccess.h60
1 files changed, 46 insertions, 14 deletions
diff --git a/arch/s390/kvm/gaccess.h b/arch/s390/kvm/gaccess.h
index f4c51756c462..7c72a5e3449f 100644
--- a/arch/s390/kvm/gaccess.h
+++ b/arch/s390/kvm/gaccess.h
@@ -18,17 +18,14 @@
/**
* kvm_s390_real_to_abs - convert guest real address to guest absolute address
- * @vcpu - guest virtual cpu
+ * @prefix - guest prefix
* @gra - guest real address
*
* Returns the guest absolute address that corresponds to the passed guest real
- * address @gra of a virtual guest cpu by applying its prefix.
+ * address @gra of by applying the given prefix.
*/
-static inline unsigned long kvm_s390_real_to_abs(struct kvm_vcpu *vcpu,
- unsigned long gra)
+static inline unsigned long _kvm_s390_real_to_abs(u32 prefix, unsigned long gra)
{
- unsigned long prefix = kvm_s390_get_prefix(vcpu);
-
if (gra < 2 * PAGE_SIZE)
gra += prefix;
else if (gra >= prefix && gra < prefix + 2 * PAGE_SIZE)
@@ -37,6 +34,43 @@ static inline unsigned long kvm_s390_real_to_abs(struct kvm_vcpu *vcpu,
}
/**
+ * kvm_s390_real_to_abs - convert guest real address to guest absolute address
+ * @vcpu - guest virtual cpu
+ * @gra - guest real address
+ *
+ * Returns the guest absolute address that corresponds to the passed guest real
+ * address @gra of a virtual guest cpu by applying its prefix.
+ */
+static inline unsigned long kvm_s390_real_to_abs(struct kvm_vcpu *vcpu,
+ unsigned long gra)
+{
+ return _kvm_s390_real_to_abs(kvm_s390_get_prefix(vcpu), gra);
+}
+
+/**
+ * _kvm_s390_logical_to_effective - convert guest logical to effective address
+ * @psw: psw of the guest
+ * @ga: guest logical address
+ *
+ * Convert a guest logical address to an effective address by applying the
+ * rules of the addressing mode defined by bits 31 and 32 of the given PSW
+ * (extendended/basic addressing mode).
+ *
+ * Depending on the addressing mode, the upper 40 bits (24 bit addressing
+ * mode), 33 bits (31 bit addressing mode) or no bits (64 bit addressing
+ * mode) of @ga will be zeroed and the remaining bits will be returned.
+ */
+static inline unsigned long _kvm_s390_logical_to_effective(psw_t *psw,
+ unsigned long ga)
+{
+ if (psw_bits(*psw).eaba == PSW_BITS_AMODE_64BIT)
+ return ga;
+ if (psw_bits(*psw).eaba == PSW_BITS_AMODE_31BIT)
+ return ga & ((1UL << 31) - 1);
+ return ga & ((1UL << 24) - 1);
+}
+
+/**
* kvm_s390_logical_to_effective - convert guest logical to effective address
* @vcpu: guest virtual cpu
* @ga: guest logical address
@@ -52,13 +86,7 @@ static inline unsigned long kvm_s390_real_to_abs(struct kvm_vcpu *vcpu,
static inline unsigned long kvm_s390_logical_to_effective(struct kvm_vcpu *vcpu,
unsigned long ga)
{
- psw_t *psw = &vcpu->arch.sie_block->gpsw;
-
- if (psw_bits(*psw).eaba == PSW_BITS_AMODE_64BIT)
- return ga;
- if (psw_bits(*psw).eaba == PSW_BITS_AMODE_31BIT)
- return ga & ((1UL << 31) - 1);
- return ga & ((1UL << 24) - 1);
+ return _kvm_s390_logical_to_effective(&vcpu->arch.sie_block->gpsw, ga);
}
/*
@@ -359,7 +387,11 @@ void ipte_unlock(struct kvm_vcpu *vcpu);
int ipte_lock_held(struct kvm_vcpu *vcpu);
int kvm_s390_check_low_addr_prot_real(struct kvm_vcpu *vcpu, unsigned long gra);
+/* MVPG PEI indication bits */
+#define PEI_DAT_PROT 2
+#define PEI_NOT_PTE 4
+
int kvm_s390_shadow_fault(struct kvm_vcpu *vcpu, struct gmap *shadow,
- unsigned long saddr);
+ unsigned long saddr, unsigned long *datptr);
#endif /* __KVM_S390_GACCESS_H */