xen: fix interrupt routing

Compared to the last version I only added a comment to the code.

- remove i440FX-xen and i440fx_write_config_xen
we don't need to intercept pci config writes to i440FX anymore;

- introduce PIIX3-xen and piix3_write_config_xen
we do need to intercept pci config write to the PCI-ISA bridge to update
the PCI link routing;

- set the number of PIIX3-xen interrupts line to 128;

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

1 files changed, 1 insertions, 5 deletions

diff --git a/hw/pc_piix.c b/hw/pc_piix.c
index 9a22a8a..ba198de 100644
--- a/hw/pc_piix.c
+++ b/hw/pc_piix.c
@@ -124,11 +124,7 @@ static void pc_init1(ram_addr_t ram_size,
     isa_irq = qemu_allocate_irqs(isa_irq_handler, isa_irq_state, 24);
 
     if (pci_enabled) {
-        if (!xen_enabled()) {
-            pci_bus = i440fx_init(&i440fx_state, &piix3_devfn, isa_irq, ram_size);
-        } else {
-            pci_bus = i440fx_xen_init(&i440fx_state, &piix3_devfn, isa_irq, ram_size);
-        }
+        pci_bus = i440fx_init(&i440fx_state, &piix3_devfn, isa_irq, ram_size);
     } else {
         pci_bus = NULL;
         i440fx_state = NULL;