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authorStefano Stabellini <stefano.stabellini@eu.citrix.com>2010-06-24 17:50:18 +0100
committerStefano Stabellini <stefano.stabellini@eu.citrix.com>2010-10-22 21:25:42 +0100
commit3942b740e5183caad47a4a3fcb37a4509ce7af83 (patch)
tree7051ecaaca2eadbc68743b4697add53f64d9401d /arch/x86/pci/xen.c
parent90f6881e6430ea7b38b9e0f9837719b1935616e0 (diff)
xen: support GSI -> pirq remapping in PV on HVM guests
Disable pcifront when running on HVM: it is meant to be used with pv guests that don't have PCI bus. Use acpi_register_gsi_xen_hvm to remap GSIs into pirqs. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'arch/x86/pci/xen.c')
-rw-r--r--arch/x86/pci/xen.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c
index 3a4ab0b4dcc..d5284c491ae 100644
--- a/arch/x86/pci/xen.c
+++ b/arch/x86/pci/xen.c
@@ -14,6 +14,7 @@
#include <asm/xen/hypervisor.h>
+#include <xen/features.h>
#include <xen/events.h>
#include <asm/xen/pci.h>
@@ -184,3 +185,18 @@ int __init pci_xen_init(void)
#endif
return 0;
}
+
+int __init pci_xen_hvm_init(void)
+{
+ if (!xen_feature(XENFEAT_hvm_pirqs))
+ return 0;
+
+#ifdef CONFIG_ACPI
+ /*
+ * We don't want to change the actual ACPI delivery model,
+ * just how GSIs get registered.
+ */
+ __acpi_register_gsi = acpi_register_gsi_xen_hvm;
+#endif
+ return 0;
+}