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KVM: x86: Unify TSC logic

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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>
This commit is contained in:
Zachary Amsden
2010-08-19 22:07:23 -10:00
committed by Avi Kivity
parent 6755bae8e6
commit e48672fa25
4 changed files with 35 additions and 35 deletions
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5
arch/x86/include/asm/kvm_host.h
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@@ -255,7 +255,6 @@ struct kvm_mmu {
};
struct kvm_vcpu_arch {
u64 host_tsc;
/*
* rip and regs accesses must go through
* kvm_{register,rip}_{read,write} functions.
@@ -336,9 +335,10 @@ struct kvm_vcpu_arch {
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 @@ struct kvm_x86_ops {
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);