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kvm: x86: Convert ioapic->rtc_status.dest_map to a struct

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Currently this is a bitmap which tracks which CPUs we expect
an EOI from. Move this bitmap to a struct so that we can
track additional information there.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Joerg Roedel 2016-02-29 16:04:43 +01:00 committed by Paolo Bonzini
parent 61ec84f145
commit 9e4aabe2bb
5 changed files with 26 additions and 16 deletions
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13
arch/x86/kvm/ioapic.c
View File

@ -94,7 +94,7 @@ static unsigned long ioapic_read_indirect(struct kvm_ioapic *ioapic,
static void rtc_irq_eoi_tracking_reset(struct kvm_ioapic *ioapic)
{
ioapic->rtc_status.pending_eoi = 0;
bitmap_zero(ioapic->rtc_status.dest_map, KVM_MAX_VCPUS);
bitmap_zero(ioapic->rtc_status.dest_map.map, KVM_MAX_VCPUS);
}
static void kvm_rtc_eoi_tracking_restore_all(struct kvm_ioapic *ioapic);
@ -117,16 +117,16 @@ static void __rtc_irq_eoi_tracking_restore_one(struct kvm_vcpu *vcpu)
return;
new_val = kvm_apic_pending_eoi(vcpu, e->fields.vector);
old_val = test_bit(vcpu->vcpu_id, ioapic->rtc_status.dest_map);
old_val = test_bit(vcpu->vcpu_id, ioapic->rtc_status.dest_map.map);
if (new_val == old_val)
return;
if (new_val) {
__set_bit(vcpu->vcpu_id, ioapic->rtc_status.dest_map);
__set_bit(vcpu->vcpu_id, ioapic->rtc_status.dest_map.map);
ioapic->rtc_status.pending_eoi++;
} else {
__clear_bit(vcpu->vcpu_id, ioapic->rtc_status.dest_map);
__clear_bit(vcpu->vcpu_id, ioapic->rtc_status.dest_map.map);
ioapic->rtc_status.pending_eoi--;
rtc_status_pending_eoi_check_valid(ioapic);
}
@ -156,7 +156,8 @@ static void kvm_rtc_eoi_tracking_restore_all(struct kvm_ioapic *ioapic)
static void rtc_irq_eoi(struct kvm_ioapic *ioapic, struct kvm_vcpu *vcpu)
{
if (test_and_clear_bit(vcpu->vcpu_id, ioapic->rtc_status.dest_map)) {
if (test_and_clear_bit(vcpu->vcpu_id,
ioapic->rtc_status.dest_map.map)) {
--ioapic->rtc_status.pending_eoi;
rtc_status_pending_eoi_check_valid(ioapic);
}
@ -346,7 +347,7 @@ static int ioapic_service(struct kvm_ioapic *ioapic, int irq, bool line_status)
*/
BUG_ON(ioapic->rtc_status.pending_eoi != 0);
ret = kvm_irq_delivery_to_apic(ioapic->kvm, NULL, &irqe,
ioapic->rtc_status.dest_map);
&ioapic->rtc_status.dest_map);
ioapic->rtc_status.pending_eoi = (ret < 0 ? 0 : ret);
} else
ret = kvm_irq_delivery_to_apic(ioapic->kvm, NULL, &irqe, NULL);

10
arch/x86/kvm/ioapic.h
View File

@ -40,9 +40,14 @@ struct kvm_vcpu;
#define RTC_GSI -1U
#endif
struct dest_map {
DECLARE_BITMAP(map, KVM_MAX_VCPUS);
};
struct rtc_status {
int pending_eoi;
DECLARE_BITMAP(dest_map, KVM_MAX_VCPUS);
struct dest_map dest_map;
};
union kvm_ioapic_redirect_entry {
@ -118,7 +123,8 @@ int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id,
int level, bool line_status);
void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id);
int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
struct kvm_lapic_irq *irq, unsigned long *dest_map);
struct kvm_lapic_irq *irq,
struct dest_map *dest_map);
int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu,

2
arch/x86/kvm/irq_comm.c
View File

@ -54,7 +54,7 @@ static int kvm_set_ioapic_irq(struct kvm_kernel_irq_routing_entry *e,
}
int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
struct kvm_lapic_irq *irq, unsigned long *dest_map)
struct kvm_lapic_irq *irq, struct dest_map *dest_map)
{
int i, r = -1;
struct kvm_vcpu *vcpu, *lowest = NULL;

10
arch/x86/kvm/lapic.c
View File

@ -485,10 +485,10 @@ int kvm_lapic_find_highest_irr(struct kvm_vcpu *vcpu)
static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
int vector, int level, int trig_mode,
unsigned long *dest_map);
struct dest_map *dest_map);
int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq,
unsigned long *dest_map)
struct dest_map *dest_map)
{
struct kvm_lapic *apic = vcpu->arch.apic;
@ -695,7 +695,7 @@ static void kvm_apic_disabled_lapic_found(struct kvm *kvm)
}
bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src,
struct kvm_lapic_irq *irq, int *r, unsigned long *dest_map)
struct kvm_lapic_irq *irq, int *r, struct dest_map *dest_map)
{
struct kvm_apic_map *map;
unsigned long bitmap = 1;
@ -894,7 +894,7 @@ out:
*/
static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
int vector, int level, int trig_mode,
unsigned long *dest_map)
struct dest_map *dest_map)
{
int result = 0;
struct kvm_vcpu *vcpu = apic->vcpu;
@ -915,7 +915,7 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
result = 1;
if (dest_map)
__set_bit(vcpu->vcpu_id, dest_map);
__set_bit(vcpu->vcpu_id, dest_map->map);
if (apic_test_vector(vector, apic->regs + APIC_TMR) != !!trig_mode) {
if (trig_mode)

7
arch/x86/kvm/lapic.h
View File

@ -42,6 +42,9 @@ struct kvm_lapic {
unsigned long pending_events;
unsigned int sipi_vector;
};
struct dest_map;
int kvm_create_lapic(struct kvm_vcpu *vcpu);
void kvm_free_lapic(struct kvm_vcpu *vcpu);
@ -60,11 +63,11 @@ void kvm_apic_set_version(struct kvm_vcpu *vcpu);
void __kvm_apic_update_irr(u32 *pir, void *regs);
void kvm_apic_update_irr(struct kvm_vcpu *vcpu, u32 *pir);
int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq,
unsigned long *dest_map);
struct dest_map *dest_map);
int kvm_apic_local_deliver(struct kvm_lapic *apic, int lvt_type);
bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src,
struct kvm_lapic_irq *irq, int *r, unsigned long *dest_map);
struct kvm_lapic_irq *irq, int *r, struct dest_map *dest_map);
u64 kvm_get_apic_base(struct kvm_vcpu *vcpu);
int kvm_set_apic_base(struct kvm_vcpu *vcpu, struct msr_data *msr_info);