diff options
| author |   Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> | 2016-05-04 14:09:40 -0500 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2016-05-18 18:04:25 +0200 |
| commit | 1e6e2755b635e85ce0b1ce827b7c375b6a0a890c (patch) | |
| tree | f892fef66ac51b3c347982fedc66f4b025db849b /arch/x86/kvm/lapic.h | |
| parent | KVM: shrink halt polling even more for invalid wakeups (diff) | |
| download | linux-dev-1e6e2755b635e85ce0b1ce827b7c375b6a0a890c.tar.xz linux-dev-1e6e2755b635e85ce0b1ce827b7c375b6a0a890c.zip | |
KVM: x86: Misc LAPIC changes to expose helper functions
Exporting LAPIC utility functions and macros for re-use in SVM code.
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | arch/x86/kvm/lapic.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h index f71183e502ee..a70cb62933b9 100644 --- a/arch/x86/kvm/lapic.h +++ b/arch/x86/kvm/lapic.h @@ -7,6 +7,7 @@ #define KVM_APIC_INIT 0 #define KVM_APIC_SIPI 1 +#define KVM_APIC_LVT_NUM 6 struct kvm_timer { struct hrtimer timer; @@ -59,6 +60,11 @@ void kvm_lapic_set_eoi(struct kvm_vcpu *vcpu); void kvm_lapic_set_base(struct kvm_vcpu *vcpu, u64 value); u64 kvm_lapic_get_base(struct kvm_vcpu *vcpu); void kvm_apic_set_version(struct kvm_vcpu *vcpu); +int kvm_lapic_reg_write(struct kvm_lapic *apic, u32 reg, u32 val); +int kvm_lapic_reg_read(struct kvm_lapic *apic, u32 offset, int len, + void *data); +bool kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source, + int short_hand, unsigned int dest, int dest_mode); void __kvm_apic_update_irr(u32 *pir, void *regs); void kvm_apic_update_irr(struct kvm_vcpu *vcpu, u32 *pir); @@ -99,11 +105,34 @@ static inline bool kvm_hv_vapic_assist_page_enabled(struct kvm_vcpu *vcpu) int kvm_lapic_enable_pv_eoi(struct kvm_vcpu *vcpu, u64 data); void kvm_lapic_init(void); +#define VEC_POS(v) ((v) & (32 - 1)) +#define REG_POS(v) (((v) >> 5) << 4) + +static inline void kvm_lapic_set_vector(int vec, void *bitmap) +{ + set_bit(VEC_POS(vec), (bitmap) + REG_POS(vec)); +} + +static inline void kvm_lapic_set_irr(int vec, struct kvm_lapic *apic) +{ + kvm_lapic_set_vector(vec, apic->regs + APIC_IRR); + /* + * irr_pending must be true if any interrupt is pending; set it after + * APIC_IRR to avoid race with apic_clear_irr + */ + apic->irr_pending = true; +} + static inline u32 kvm_apic_get_reg(struct kvm_lapic *apic, int reg_off) { return *((u32 *) (apic->regs + reg_off)); } +static inline void kvm_lapic_set_reg(struct kvm_lapic *apic, int reg_off, u32 val) +{ + *((u32 *) (apic->regs + reg_off)) = val; +} + extern struct static_key kvm_no_apic_vcpu; static inline bool lapic_in_kernel(struct kvm_vcpu *vcpu) |