KVM: x86: Unify TSC logic
Move the TSC control logic from the vendor backends into x86.c
by adding adjust_tsc_offset to x86 ops. Now all TSC decisions
can be done in one place.
Signed-off-by: Zachary Amsden <zamsden@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 57b4394..5ab1c3f 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -255,7 +255,6 @@
};
struct kvm_vcpu_arch {
- u64 host_tsc;
/*
* rip and regs accesses must go through
* kvm_{register,rip}_{read,write} functions.
@@ -336,9 +335,10 @@
gpa_t time;
struct pvclock_vcpu_time_info hv_clock;
- unsigned int hv_clock_tsc_khz;
+ unsigned int hw_tsc_khz;
unsigned int time_offset;
struct page *time_page;
+ u64 last_host_tsc;
bool nmi_pending;
bool nmi_injected;
@@ -520,6 +520,7 @@
u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
int (*get_lpage_level)(void);
bool (*rdtscp_supported)(void);
+ void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment);
void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);