http://bugzilla.kernel.org/show_bug.cgi?id=14445





--- Comment #7 from Suresh B Siddha <[email protected]>  2009-10-21 
01:06:25 ---
Yes. First ioremap() from 0x7fffff00 to 0x7fffffff followed by another
ioremap() from 0x80000000 to 0x800000ff (while the first mapping is
active/inactive) is ok.

As the intelligence lies with the caller, we have to do this.

ioremap() checks happen at the resource level and it just happens that we span
two different resource entities when we try to map the whole of 0x7fffff00 to
0x800000ff in one ioremap() request.

Hope this helps.

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