x86, CPA: Change idmap attribute before ioremap attribute setup
Change the identity mapping with the requested attribute first, before we setup the virtual memory mapping with the new requested attribute. This makes sure that there is no window when identity map'ed attribute may disagree with ioremap range on the attribute type. This also avoids doing cpa on the ioremap'ed address twice (first in ioremap_page_range and then in ioremap_change_attr using vaddr), and should improve ioremap performance a bit. Signed-off-by: NSuresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com> LKML-Reference: <20090409212708.373330000@intel.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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