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Message-Id: <1456758285-25060-2-git-send-email-joro@8bytes.org>
Date: Mon, 29 Feb 2016 16:04:43 +0100
From: Joerg Roedel <joro@...tes.org>
To: Paolo Bonzini <pbonzini@...hat.com>, Gleb Natapov <gleb@...nel.org>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
Joerg Roedel <jroedel@...e.de>
Subject: [PATCH 1/3] kvm: x86: Convert ioapic->rtc_status.dest_map to a struct
From: Joerg Roedel <jroedel@...e.de>
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@...e.de>
---
arch/x86/kvm/ioapic.c | 13 +++++++------
arch/x86/kvm/ioapic.h | 10 ++++++++--
arch/x86/kvm/irq_comm.c | 2 +-
arch/x86/kvm/lapic.c | 10 +++++-----
arch/x86/kvm/lapic.h | 7 +++++--
5 files changed, 26 insertions(+), 16 deletions(-)
diff --git a/arch/x86/kvm/ioapic.c b/arch/x86/kvm/ioapic.c
index 1facfd6..f2c9906 100644
--- a/arch/x86/kvm/ioapic.c
+++ b/arch/x86/kvm/ioapic.c
@@ -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);
diff --git a/arch/x86/kvm/ioapic.h b/arch/x86/kvm/ioapic.h
index 2d16dc2..af72989 100644
--- a/arch/x86/kvm/ioapic.h
+++ b/arch/x86/kvm/ioapic.h
@@ -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,
diff --git a/arch/x86/kvm/irq_comm.c b/arch/x86/kvm/irq_comm.c
index 8fc89ef..4537d17 100644
--- a/arch/x86/kvm/irq_comm.c
+++ b/arch/x86/kvm/irq_comm.c
@@ -53,7 +53,7 @@ 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;
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 36591fa..5b78c97 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -491,10 +491,10 @@ 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;
@@ -676,7 +676,7 @@ bool kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
}
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;
@@ -819,7 +819,7 @@ 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;
@@ -840,7 +840,7 @@ 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)
diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h
index 41bdb35..80e8d32 100644
--- a/arch/x86/kvm/lapic.h
+++ b/arch/x86/kvm/lapic.h
@@ -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);
--
1.9.1
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