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Commit 9e4aabe2 authored by Joerg Roedel's avatar Joerg Roedel Committed by Paolo Bonzini
Browse files

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



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: default avatarJoerg Roedel <jroedel@suse.de>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 61ec84f1

arch/x86/kvm/ioapic.c

+7 −6
Original line number Diff line number Diff line
@@ -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);

arch/x86/kvm/ioapic.h

+8 −2
Original line number Diff line number Diff line
@@ -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,

arch/x86/kvm/irq_comm.c

+1 −1
Original line number Diff line number Diff line
@@ -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;

arch/x86/kvm/lapic.c

+5 −5
Original line number Diff line number Diff line
@@ -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 @@ bool kvm_intr_is_single_vcpu_fast(struct kvm *kvm, struct kvm_lapic_irq *irq, 
 */

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)

arch/x86/kvm/lapic.h

+5 −2
Original line number Diff line number Diff line
@@ -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);