* [PATCH] xen: enable platform-pci only in a Xen guest
@ 2012-07-10 13:31 Olaf Hering
0 siblings, 0 replies; only message in thread
From: Olaf Hering @ 2012-07-10 13:31 UTC (permalink / raw)
To: Jeremy Fitzhardinge, Konrad Rzeszutek Wilk
Cc: Olaf Hering, xen-devel, linux-kernel
While debugging kexec issues in a PVonHVM guest I modified
xen_hvm_platform() to return false to disable all PV drivers. This
caused a crash in platform_pci_init() because it expects certain data
structures to be initialized properly.
To avoid such a crash make sure the driver is initialized only if
running in a Xen guest.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
---
drivers/xen/platform-pci.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/xen/platform-pci.c b/drivers/xen/platform-pci.c
index 2389e58..97ca359 100644
--- a/drivers/xen/platform-pci.c
+++ b/drivers/xen/platform-pci.c
@@ -109,6 +109,9 @@ static int __devinit platform_pci_init(struct pci_dev *pdev,
long mmio_addr, mmio_len;
unsigned int max_nr_gframes;
+ if (!xen_domain())
+ return -ENODEV;
+
i = pci_enable_device(pdev);
if (i)
return i;
--
1.7.3.4
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