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Diffstat (limited to 'drivers/xen/platform-pci.c')
-rw-r--r--drivers/xen/platform-pci.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/xen/platform-pci.c b/drivers/xen/platform-pci.c
index 97ca359ae2bd..d4c50d63acbc 100644
--- a/drivers/xen/platform-pci.c
+++ b/drivers/xen/platform-pci.c
@@ -101,6 +101,19 @@ static int platform_pci_resume(struct pci_dev *pdev)
return 0;
}
+static void __devinit prepare_shared_info(void)
+{
+#ifdef CONFIG_KEXEC
+ unsigned long addr;
+ struct shared_info *hvm_shared_info;
+
+ addr = alloc_xen_mmio(PAGE_SIZE);
+ hvm_shared_info = ioremap(addr, PAGE_SIZE);
+ memset(hvm_shared_info, 0, PAGE_SIZE);
+ xen_hvm_prepare_kexec(hvm_shared_info, addr >> PAGE_SHIFT);
+#endif
+}
+
static int __devinit platform_pci_init(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
@@ -138,6 +151,8 @@ static int __devinit platform_pci_init(struct pci_dev *pdev,
platform_mmio = mmio_addr;
platform_mmiolen = mmio_len;
+ prepare_shared_info();
+
if (!xen_have_vector_callback) {
ret = xen_allocate_irq(pdev);
if (ret) {