From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Date: Mon, 30 Jan 2012 14:31:46 +0000 (+0000)
Subject: xen pvhvm: do not remap pirqs onto evtchns if !xen_have_vector_callback
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=207d543f472c1ac9552df79838dc807cbcaa9740;p=linux-beck.git

xen pvhvm: do not remap pirqs onto evtchns if !xen_have_vector_callback

CC: stable@kernel.org #2.6.37 and onwards
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---

diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c
index 492ade8c978e..d99346ea8fdb 100644
--- a/arch/x86/pci/xen.c
+++ b/arch/x86/pci/xen.c
@@ -374,7 +374,7 @@ int __init pci_xen_init(void)
 
 int __init pci_xen_hvm_init(void)
 {
-	if (!xen_feature(XENFEAT_hvm_pirqs))
+	if (!xen_have_vector_callback || !xen_feature(XENFEAT_hvm_pirqs))
 		return 0;
 
 #ifdef CONFIG_ACPI