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Diffstat (limited to 'arch/ia64/kvm/vcpu.c')
-rw-r--r--arch/ia64/kvm/vcpu.c20
1 files changed, 18 insertions, 2 deletions
diff --git a/arch/ia64/kvm/vcpu.c b/arch/ia64/kvm/vcpu.c
index a18ee17b9192..a2c6c15e4761 100644
--- a/arch/ia64/kvm/vcpu.c
+++ b/arch/ia64/kvm/vcpu.c
@@ -788,13 +788,29 @@ void vcpu_set_fpreg(struct kvm_vcpu *vcpu, unsigned long reg,
setfpreg(reg, val, regs); /* FIXME: handle NATs later*/
}
+/*
+ * The Altix RTC is mapped specially here for the vmm module
+ */
+#define SN_RTC_BASE (u64 *)(KVM_VMM_BASE+(1UL<<KVM_VMM_SHIFT))
+static long kvm_get_itc(struct kvm_vcpu *vcpu)
+{
+#if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC)
+ struct kvm *kvm = (struct kvm *)KVM_VM_BASE;
+
+ if (kvm->arch.is_sn2)
+ return (*SN_RTC_BASE);
+ else
+#endif
+ return ia64_getreg(_IA64_REG_AR_ITC);
+}
+
/************************************************************************
* lsapic timer
***********************************************************************/
u64 vcpu_get_itc(struct kvm_vcpu *vcpu)
{
unsigned long guest_itc;
- guest_itc = VMX(vcpu, itc_offset) + ia64_getreg(_IA64_REG_AR_ITC);
+ guest_itc = VMX(vcpu, itc_offset) + kvm_get_itc(vcpu);
if (guest_itc >= VMX(vcpu, last_itc)) {
VMX(vcpu, last_itc) = guest_itc;
@@ -809,7 +825,7 @@ static void vcpu_set_itc(struct kvm_vcpu *vcpu, u64 val)
struct kvm_vcpu *v;
struct kvm *kvm;
int i;
- long itc_offset = val - ia64_getreg(_IA64_REG_AR_ITC);
+ long itc_offset = val - kvm_get_itc(vcpu);
unsigned long vitv = VCPU(vcpu, itv);
kvm = (struct kvm *)KVM_VM_BASE;