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Message-Id: <1228854179-23002-38-git-send-email-avi@redhat.com>
Date: Tue, 9 Dec 2008 22:22:52 +0200
From: Avi Kivity <avi@...hat.com>
To: kvm@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, Sheng Yang <sheng@...ux.intel.com>
Subject: [PATCH 37/44] KVM: Replace irq_requested with more generic irq_requested_type
From: Sheng Yang <sheng@...ux.intel.com>
Separate guest irq type and host irq type, for we can support guest using INTx
with host using MSI (but not opposite combination).
Signed-off-by: Sheng Yang <sheng@...ux.intel.com>
Signed-off-by: Avi Kivity <avi@...hat.com>
---
include/linux/kvm_host.h | 4 +++-
virt/kvm/kvm_main.c | 9 +++++----
2 files changed, 8 insertions(+), 5 deletions(-)
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 3a0fb77..c3d4b96 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -307,7 +307,9 @@ struct kvm_assigned_dev_kernel {
int host_devfn;
int host_irq;
int guest_irq;
- int irq_requested;
+#define KVM_ASSIGNED_DEV_GUEST_INTX (1 << 0)
+#define KVM_ASSIGNED_DEV_HOST_INTX (1 << 8)
+ unsigned long irq_requested_type;
int irq_source_id;
struct pci_dev *dev;
struct kvm *kvm;
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index ef2f03c..638de47 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -140,7 +140,7 @@ static void kvm_free_assigned_device(struct kvm *kvm,
struct kvm_assigned_dev_kernel
*assigned_dev)
{
- if (irqchip_in_kernel(kvm) && assigned_dev->irq_requested)
+ if (irqchip_in_kernel(kvm) && assigned_dev->irq_requested_type)
free_irq(assigned_dev->host_irq, (void *)assigned_dev);
kvm_unregister_irq_ack_notifier(&assigned_dev->ack_notifier);
@@ -180,7 +180,7 @@ static int assigned_device_update_intx(struct kvm *kvm,
struct kvm_assigned_dev_kernel *adev,
struct kvm_assigned_irq *airq)
{
- if (adev->irq_requested) {
+ if (adev->irq_requested_type & KVM_ASSIGNED_DEV_GUEST_INTX) {
adev->guest_irq = airq->guest_irq;
adev->ack_notifier.gsi = airq->guest_irq;
return 0;
@@ -207,7 +207,8 @@ static int assigned_device_update_intx(struct kvm *kvm,
return -EIO;
}
- adev->irq_requested = true;
+ adev->irq_requested_type = KVM_ASSIGNED_DEV_GUEST_INTX |
+ KVM_ASSIGNED_DEV_HOST_INTX;
return 0;
}
@@ -227,7 +228,7 @@ static int kvm_vm_ioctl_assign_irq(struct kvm *kvm,
return -EINVAL;
}
- if (!match->irq_requested) {
+ if (!match->irq_requested_type) {
INIT_WORK(&match->interrupt_work,
kvm_assigned_dev_interrupt_work_handler);
if (irqchip_in_kernel(kvm)) {
--
1.6.0.3
--
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