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KVM: Allow adjust_tsc_offset to be in host or guest cycles

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Redefine the API to take a parameter indicating whether an
adjustment is in host or guest cycles.

Signed-off-by: Zachary Amsden <zamsden@gmail.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Marcelo Tosatti
2012-02-03 15:43:55 -02:00
committed by Avi Kivity
parent 6f526ec538
commit f1e2b26003
4 changed files with 19 additions and 4 deletions
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13
arch/x86/include/asm/kvm_host.h
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@@ -646,7 +646,7 @@ 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 (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment, bool host);
void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
@@ -676,6 +676,17 @@ struct kvm_arch_async_pf {
extern struct kvm_x86_ops *kvm_x86_ops;
static inline void adjust_tsc_offset_guest(struct kvm_vcpu *vcpu,
s64 adjustment)
{
kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, false);
}
static inline void adjust_tsc_offset_host(struct kvm_vcpu *vcpu, s64 adjustment)
{
kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, true);
}
int kvm_mmu_module_init(void);
void kvm_mmu_module_exit(void);