mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 17:08:10 +00:00
095cf55df7
Lately tsc page was implemented but filled with empty values. This patch setup tsc page scale and offset based on vcpu tsc, tsc_khz and HV_X64_MSR_TIME_REF_COUNT value. The valid tsc page drops HV_X64_MSR_TIME_REF_COUNT msr reads count to zero which potentially improves performance. Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com> Reviewed-by: Peter Hornyack <peterhornyack@google.com> Reviewed-by: Radim Krčmář <rkrcmar@redhat.com> CC: Paolo Bonzini <pbonzini@redhat.com> CC: Roman Kagan <rkagan@virtuozzo.com> CC: Denis V. Lunev <den@openvz.org> [Computation of TSC page parameters rewritten to use the Linux timekeeper parameters. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
90 lines
2.6 KiB
C
90 lines
2.6 KiB
C
/*
|
|
* KVM Microsoft Hyper-V emulation
|
|
*
|
|
* derived from arch/x86/kvm/x86.c
|
|
*
|
|
* Copyright (C) 2006 Qumranet, Inc.
|
|
* Copyright (C) 2008 Qumranet, Inc.
|
|
* Copyright IBM Corporation, 2008
|
|
* Copyright 2010 Red Hat, Inc. and/or its affiliates.
|
|
* Copyright (C) 2015 Andrey Smetanin <asmetanin@virtuozzo.com>
|
|
*
|
|
* Authors:
|
|
* Avi Kivity <avi@qumranet.com>
|
|
* Yaniv Kamay <yaniv@qumranet.com>
|
|
* Amit Shah <amit.shah@qumranet.com>
|
|
* Ben-Ami Yassour <benami@il.ibm.com>
|
|
* Andrey Smetanin <asmetanin@virtuozzo.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2. See
|
|
* the COPYING file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
#ifndef __ARCH_X86_KVM_HYPERV_H__
|
|
#define __ARCH_X86_KVM_HYPERV_H__
|
|
|
|
static inline struct kvm_vcpu_hv *vcpu_to_hv_vcpu(struct kvm_vcpu *vcpu)
|
|
{
|
|
return &vcpu->arch.hyperv;
|
|
}
|
|
|
|
static inline struct kvm_vcpu *hv_vcpu_to_vcpu(struct kvm_vcpu_hv *hv_vcpu)
|
|
{
|
|
struct kvm_vcpu_arch *arch;
|
|
|
|
arch = container_of(hv_vcpu, struct kvm_vcpu_arch, hyperv);
|
|
return container_of(arch, struct kvm_vcpu, arch);
|
|
}
|
|
|
|
static inline struct kvm_vcpu_hv_synic *vcpu_to_synic(struct kvm_vcpu *vcpu)
|
|
{
|
|
return &vcpu->arch.hyperv.synic;
|
|
}
|
|
|
|
static inline struct kvm_vcpu *synic_to_vcpu(struct kvm_vcpu_hv_synic *synic)
|
|
{
|
|
return hv_vcpu_to_vcpu(container_of(synic, struct kvm_vcpu_hv, synic));
|
|
}
|
|
|
|
int kvm_hv_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data, bool host);
|
|
int kvm_hv_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
|
|
|
|
bool kvm_hv_hypercall_enabled(struct kvm *kvm);
|
|
int kvm_hv_hypercall(struct kvm_vcpu *vcpu);
|
|
|
|
void kvm_hv_irq_routing_update(struct kvm *kvm);
|
|
int kvm_hv_synic_set_irq(struct kvm *kvm, u32 vcpu_id, u32 sint);
|
|
void kvm_hv_synic_send_eoi(struct kvm_vcpu *vcpu, int vector);
|
|
int kvm_hv_activate_synic(struct kvm_vcpu *vcpu);
|
|
|
|
void kvm_hv_vcpu_init(struct kvm_vcpu *vcpu);
|
|
void kvm_hv_vcpu_uninit(struct kvm_vcpu *vcpu);
|
|
|
|
static inline struct kvm_vcpu_hv_stimer *vcpu_to_stimer(struct kvm_vcpu *vcpu,
|
|
int timer_index)
|
|
{
|
|
return &vcpu_to_hv_vcpu(vcpu)->stimer[timer_index];
|
|
}
|
|
|
|
static inline struct kvm_vcpu *stimer_to_vcpu(struct kvm_vcpu_hv_stimer *stimer)
|
|
{
|
|
struct kvm_vcpu_hv *hv_vcpu;
|
|
|
|
hv_vcpu = container_of(stimer - stimer->index, struct kvm_vcpu_hv,
|
|
stimer[0]);
|
|
return hv_vcpu_to_vcpu(hv_vcpu);
|
|
}
|
|
|
|
static inline bool kvm_hv_has_stimer_pending(struct kvm_vcpu *vcpu)
|
|
{
|
|
return !bitmap_empty(vcpu->arch.hyperv.stimer_pending_bitmap,
|
|
HV_SYNIC_STIMER_COUNT);
|
|
}
|
|
|
|
void kvm_hv_process_stimers(struct kvm_vcpu *vcpu);
|
|
|
|
void kvm_hv_setup_tsc_page(struct kvm *kvm,
|
|
struct pvclock_vcpu_time_info *hv_clock);
|
|
|
|
#endif
|