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From: Sheng Yang <sheng@linux.intel.com>
To: Avi Kivity <avi@redhat.com>
Cc: kvm@vger.kernel.org, Sheng Yang <sheng@linux.intel.com>
Subject: [PATCH 3/5] KVM: Change API of kvm_ioapic_get_delivery_bitmask
Date: Wed, 11 Feb 2009 16:03:38 +0800	[thread overview]
Message-ID: <1234339420-3046-4-git-send-email-sheng@linux.intel.com> (raw)
In-Reply-To: <1234339420-3046-1-git-send-email-sheng@linux.intel.com>

In order to use with bit ops.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
---
 virt/kvm/ioapic.c   |   17 ++++++++---------
 virt/kvm/ioapic.h   |    4 ++--
 virt/kvm/irq_comm.c |    5 +++--
 3 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
index 99d274c..6cb33d8 100644
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -158,22 +158,22 @@ static void ioapic_inj_nmi(struct kvm_vcpu *vcpu)
 	kvm_vcpu_kick(vcpu);
 }
 
-u32 kvm_ioapic_get_delivery_bitmask(struct kvm_ioapic *ioapic, u8 dest,
-				    u8 dest_mode)
+void kvm_ioapic_get_delivery_bitmask(struct kvm_ioapic *ioapic, u8 dest,
+				     u8 dest_mode, u32 *mask)
 {
-	u32 mask = 0;
 	int i;
 	struct kvm *kvm = ioapic->kvm;
 	struct kvm_vcpu *vcpu;
 
 	ioapic_debug("dest %d dest_mode %d\n", dest, dest_mode);
 
+	*mask = 0;
 	if (dest_mode == 0) {	/* Physical mode. */
 		if (dest == 0xFF) {	/* Broadcast. */
 			for (i = 0; i < KVM_MAX_VCPUS; ++i)
 				if (kvm->vcpus[i] && kvm->vcpus[i]->arch.apic)
-					mask |= 1 << i;
-			return mask;
+					*mask |= 1 << i;
+			return;
 		}
 		for (i = 0; i < KVM_MAX_VCPUS; ++i) {
 			vcpu = kvm->vcpus[i];
@@ -181,7 +181,7 @@ u32 kvm_ioapic_get_delivery_bitmask(struct kvm_ioapic *ioapic, u8 dest,
 				continue;
 			if (kvm_apic_match_physical_addr(vcpu->arch.apic, dest)) {
 				if (vcpu->arch.apic)
-					mask = 1 << i;
+					*mask = 1 << i;
 				break;
 			}
 		}
@@ -192,10 +192,9 @@ u32 kvm_ioapic_get_delivery_bitmask(struct kvm_ioapic *ioapic, u8 dest,
 				continue;
 			if (vcpu->arch.apic &&
 			    kvm_apic_match_logical_addr(vcpu->arch.apic, dest))
-				mask |= 1 << vcpu->vcpu_id;
+				*mask |= 1 << vcpu->vcpu_id;
 		}
-	ioapic_debug("mask %x\n", mask);
-	return mask;
+	ioapic_debug("mask %x\n", *mask);
 }
 
 static int ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
diff --git a/virt/kvm/ioapic.h b/virt/kvm/ioapic.h
index ee5b0bd..e107dbb 100644
--- a/virt/kvm/ioapic.h
+++ b/virt/kvm/ioapic.h
@@ -70,7 +70,7 @@ void kvm_ioapic_update_eoi(struct kvm *kvm, int vector, int trigger_mode);
 int kvm_ioapic_init(struct kvm *kvm);
 void kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level);
 void kvm_ioapic_reset(struct kvm_ioapic *ioapic);
-u32 kvm_ioapic_get_delivery_bitmask(struct kvm_ioapic *ioapic, u8 dest,
-				u8 dest_mode);
+void kvm_ioapic_get_delivery_bitmask(struct kvm_ioapic *ioapic, u8 dest,
+				     u8 dest_mode, u32 *mask);
 
 #endif
diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c
index 5e1dbed..708493a 100644
--- a/virt/kvm/irq_comm.c
+++ b/virt/kvm/irq_comm.c
@@ -49,8 +49,9 @@ void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic,
 {
 	struct kvm_vcpu *vcpu;
 
-	*deliver_bitmask = kvm_ioapic_get_delivery_bitmask(ioapic,
-				entry->fields.dest_id, entry->fields.dest_mode);
+	kvm_ioapic_get_delivery_bitmask(ioapic, entry->fields.dest_id,
+					entry->fields.dest_mode,
+					deliver_bitmask);
 	switch (entry->fields.delivery_mode) {
 	case IOAPIC_LOWEST_PRIORITY:
 		vcpu = kvm_get_lowest_prio_vcpu(ioapic->kvm,
-- 
1.5.4.5


  parent reply	other threads:[~2009-02-11  8:03 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-02-11  8:03 [PATCH 0/5 v8] Optimize and unify IOAPIC/MSI delivery Sheng Yang
2009-02-11  8:03 ` [PATCH 1/5] KVM: Split IOAPIC structure Sheng Yang
2009-02-11  8:03 ` [PATCH 2/5] KVM: Unified the delivery of IOAPIC and MSI Sheng Yang
2009-02-11  8:03 ` Sheng Yang [this message]
2009-02-11  8:03 ` [PATCH 4/5] KVM: Update intr delivery func to accept unsigned long* bitmap Sheng Yang
2009-02-11  8:03 ` [PATCH 5/5] KVM: bit ops for deliver_bitmap Sheng Yang
2009-02-11 12:41 ` [PATCH 0/5 v8] Optimize and unify IOAPIC/MSI delivery Avi Kivity
2009-02-12 18:39   ` Marcelo Tosatti
2009-02-25 10:16 ` Avi Kivity
2009-02-25  9:18 [PATCH 0/5 v9] " Sheng Yang
2009-02-25  9:18 ` [PATCH 3/5] KVM: Change API of kvm_ioapic_get_delivery_bitmask Sheng Yang

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