From ff5c31d039d5f89019967053decd97ab243df803 Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti <mtosatti@redhat.com> Date: Thu, 21 May 2009 17:08:44 -0700 Subject: [PATCH 15/15] kvm: qemu: deassign irq for INTx Also add irq_requested_type for assigned device to track current status. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com> (cherry picked from commit 674487874852bc36adab7c5d881015417fbefbe4) Signed-off-by: Chris Wright <chrisw@redhat.com> Bugzilla: 498084 Message-Id: <1242950924-30161-14-git-send-email-chrisw@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> RH-Upstream-status: applied Acked-by: Juan Quintela <quintela@redhat.com> Acked-by: Marcelo Tosatti <mtosatti@redhat.com> Acked-by: Don Dutile <ddutile@redhat.com> --- qemu/hw/device-assignment.c | 12 ++++++++++++ qemu/hw/device-assignment.h | 1 + 2 files changed, 13 insertions(+), 0 deletions(-) diff --git a/qemu/hw/device-assignment.c b/qemu/hw/device-assignment.c index 56d70b4..1c2725b 100644 --- a/qemu/hw/device-assignment.c +++ b/qemu/hw/device-assignment.c @@ -536,6 +536,17 @@ static int assign_irq(AssignedDevInfo *adev) calc_assigned_dev_id(dev->h_busnr, dev->h_devfn); assigned_irq_data.guest_irq = irq; assigned_irq_data.host_irq = dev->real_device.irq; +#ifdef KVM_CAP_ASSIGN_DEV_IRQ + if (dev->irq_requested_type) { + assigned_irq_data.flags = dev->irq_requested_type; + r = kvm_deassign_irq(kvm_context, &assigned_irq_data); + /* -ENXIO means no assigned irq */ + if (r && r != -ENXIO) + perror("assign_irq: deassign"); + } + assigned_irq_data.flags = KVM_DEV_IRQ_HOST_INTX | KVM_DEV_IRQ_GUEST_INTX; +#endif + r = kvm_assign_irq(kvm_context, &assigned_irq_data); if (r < 0) { fprintf(stderr, "Failed to assign irq for \"%s\": %s\n", @@ -546,6 +557,7 @@ static int assign_irq(AssignedDevInfo *adev) } dev->girq = irq; + dev->irq_requested_type = assigned_irq_data.flags; return r; } diff --git a/qemu/hw/device-assignment.h b/qemu/hw/device-assignment.h index da775d7..e648240 100644 --- a/qemu/hw/device-assignment.h +++ b/qemu/hw/device-assignment.h @@ -79,6 +79,7 @@ typedef struct { int girq; unsigned char h_busnr; unsigned int h_devfn; + int irq_requested_type; int bound; } AssignedDevice; -- 1.6.3.rc4.29.g8146