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xen/privcmd: print SIGBUS faults

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Print more detail about privcmd mapping faults for debugging.

[ Impact: debug ]

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
This commit is contained in:
Jeremy Fitzhardinge
2009-03-06 09:56:59 -08:00
parent 35f8c1c343
commit 441c7416b5
1 changed files with 4 additions and 0 deletions
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drivers/xen/xenfs/privcmd.c
+4
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@@ -403,6 +403,10 @@ static long privcmd_ioctl(struct file *file,
#ifndef HAVE_ARCH_PRIVCMD_MMAP
static int privcmd_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
{
printk(KERN_DEBUG "privcmd_fault: vma=%p %lx-%lx, pgoff=%lx, uv=%p\n",
vma, vma->vm_start, vma->vm_end,
vmf->pgoff, vmf->virtual_address);
return VM_FAULT_SIGBUS;
}