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xen/debug: WARN_ON when identity PFN has no _PAGE_IOMAP flag set.
authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Thu, 23 Dec 2010 21:25:29 +0000 (16:25 -0500)
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Mon, 14 Mar 2011 15:17:12 +0000 (11:17 -0400)
Only enabled if XEN_DEBUG is enabled. We print a warning
when:

 pfn_to_mfn(pfn) == pfn, but no VM_IO (_PAGE_IOMAP) flag set
(and pfn is an identity mapped pfn)
 pfn_to_mfn(pfn) != pfn, and VM_IO flag is set.
(ditto, pfn is an identity mapped pfn)

[v2: Make it dependent on CONFIG_XEN_DEBUG instead of ..DEBUG_FS]
[v3: Fix compiler warning]

Reviewed-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

No differences found
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