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 5/8] KVM: Using gsi_msg mapping for MSI device assignment
Date: Tue, 23 Dec 2008 16:00:28 +0800 [thread overview]
Message-ID: <1230019231-16543-6-git-send-email-sheng@linux.intel.com> (raw)
In-Reply-To: <1230019231-16543-1-git-send-email-sheng@linux.intel.com>
Convert MSI userspace interface to support gsi_msg mapping(and nobody should
be the user of the old interface...).
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
---
include/linux/kvm_host.h | 1 -
virt/kvm/kvm_main.c | 33 ++++++++++++++++++++-------------
2 files changed, 20 insertions(+), 14 deletions(-)
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 0e5741a..aa2606b 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -313,7 +313,6 @@ struct kvm_assigned_dev_kernel {
int host_irq;
bool host_irq_disabled;
int guest_irq;
- struct msi_msg guest_msi;
#define KVM_ASSIGNED_DEV_GUEST_INTX (1 << 0)
#define KVM_ASSIGNED_DEV_GUEST_MSI (1 << 1)
#define KVM_ASSIGNED_DEV_HOST_INTX (1 << 8)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index db9de47..50b3ff6 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -92,20 +92,28 @@ static void assigned_device_msi_dispatch(struct kvm_assigned_dev_kernel *dev)
int vcpu_id;
struct kvm_vcpu *vcpu;
struct kvm_ioapic *ioapic = ioapic_irqchip(dev->kvm);
- int dest_id = (dev->guest_msi.address_lo & MSI_ADDR_DEST_ID_MASK)
- >> MSI_ADDR_DEST_ID_SHIFT;
- int vector = (dev->guest_msi.data & MSI_DATA_VECTOR_MASK)
- >> MSI_DATA_VECTOR_SHIFT;
- int dest_mode = test_bit(MSI_ADDR_DEST_MODE_SHIFT,
- (unsigned long *)&dev->guest_msi.address_lo);
- int trig_mode = test_bit(MSI_DATA_TRIGGER_SHIFT,
- (unsigned long *)&dev->guest_msi.data);
- int delivery_mode = test_bit(MSI_DATA_DELIVERY_MODE_SHIFT,
- (unsigned long *)&dev->guest_msi.data);
+ struct kvm_gsi_msg *gsi_msg =
+ kvm_find_gsi_msg(dev->kvm, dev->guest_irq);
+ int dest_id, vector, dest_mode, trig_mode, delivery_mode;
u32 deliver_bitmask;
BUG_ON(!ioapic);
+ if (!gsi_msg) {
+ printk(KERN_WARNING "kvm: fail to find correlated gsi_msg\n");
+ return;
+ }
+
+ dest_id = (gsi_msg->msg.address_lo & MSI_ADDR_DEST_ID_MASK)
+ >> MSI_ADDR_DEST_ID_SHIFT;
+ vector = (gsi_msg->msg.data & MSI_DATA_VECTOR_MASK)
+ >> MSI_DATA_VECTOR_SHIFT;
+ dest_mode = test_bit(MSI_ADDR_DEST_MODE_SHIFT,
+ (unsigned long *)&gsi_msg->msg.address_lo);
+ trig_mode = test_bit(MSI_DATA_TRIGGER_SHIFT,
+ (unsigned long *)&gsi_msg->msg.data);
+ delivery_mode = test_bit(MSI_DATA_DELIVERY_MODE_SHIFT,
+ (unsigned long *)&gsi_msg->msg.data);
deliver_bitmask = kvm_ioapic_get_delivery_bitmask(ioapic,
dest_id, dest_mode);
/* IOAPIC delivery mode value is the same as MSI here */
@@ -316,17 +324,16 @@ static int assigned_device_update_msi(struct kvm *kvm,
{
int r;
+ adev->guest_irq = airq->guest_irq;
+
if (airq->flags & KVM_DEV_IRQ_ASSIGN_ENABLE_MSI) {
/* x86 don't care upper address of guest msi message addr */
adev->irq_requested_type |= KVM_ASSIGNED_DEV_GUEST_MSI;
adev->irq_requested_type &= ~KVM_ASSIGNED_DEV_GUEST_INTX;
- adev->guest_msi.address_lo = airq->guest_msi.addr_lo;
- adev->guest_msi.data = airq->guest_msi.data;
adev->ack_notifier.gsi = -1;
} else if (msi2intx) {
adev->irq_requested_type |= KVM_ASSIGNED_DEV_GUEST_INTX;
adev->irq_requested_type &= ~KVM_ASSIGNED_DEV_GUEST_MSI;
- adev->guest_irq = airq->guest_irq;
adev->ack_notifier.gsi = airq->guest_irq;
} else {
/*
--
1.5.4.5
next prev parent reply other threads:[~2008-12-23 8:00 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-23 8:00 [PATCH 0/8] MSI enhancement Sheng Yang
2008-12-23 8:00 ` [PATCH 1/8] KVM: Add MSI_ACTION flag for assigned irq Sheng Yang
2008-12-23 17:32 ` Marcelo Tosatti
2008-12-24 2:24 ` Sheng Yang
2008-12-27 19:24 ` Marcelo Tosatti
2008-12-23 8:00 ` [PATCH 2/8] KVM: Use kvm_free_assigned_irq() for free irq Sheng Yang
2008-12-23 15:18 ` Marcelo Tosatti
2008-12-25 8:42 ` Sheng Yang
2008-12-23 8:00 ` [PATCH 3/8] KVM: Add support to disable MSI for assigned device Sheng Yang
2008-12-23 8:00 ` [PATCH 4/8] KVM: Add a route layer to convert MSI message to GSI Sheng Yang
2008-12-23 17:55 ` Marcelo Tosatti
2008-12-24 2:31 ` Sheng Yang
2008-12-25 1:59 ` Sheng Yang
2008-12-27 19:27 ` Marcelo Tosatti
2008-12-28 11:14 ` Sheng Yang
2008-12-23 8:00 ` Sheng Yang [this message]
2008-12-23 18:05 ` [PATCH 5/8] KVM: Using gsi_msg mapping for MSI device assignment Marcelo Tosatti
2008-12-24 2:41 ` Sheng Yang
2008-12-23 8:00 ` [PATCH 6/8] KVM: Improve MSI dispatch function Sheng Yang
2008-12-23 8:00 ` [PATCH 7/8] KVM: Using ioapic_irqchip() macro for kvm_set_irq Sheng Yang
2008-12-23 8:00 ` [PATCH 8/8] KVM: Merge MSI handling to kvm_set_irq Sheng Yang
2008-12-23 18:10 ` Marcelo Tosatti
2008-12-24 2:44 ` Sheng Yang
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