tree 739b32c42b8a83e142cd64b48d6723ac666ddc22
parent 2573f6842201a00f139237e4b42ab16711b582af
author Milton Miller <miltonm@bga.com> 1305116699 +0000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1305789928 +1000

powerpc/pseries/iommu: Find windows after kexec during boot

Move the discovery of windows previously setup from when the pci driver
calls set_dma_mask to an arch_initcall.

When kexecing into a kernel with dynamic dma windows allocated, we need
to find the windows early so that memory hot remove will be able to
delete the tces mapping the to be removed memory and memory hotplug add
will map the new memory into the window.  We should not wait for the
driver to be loaded and the device to be probed.  The iommu init hooks
are before kmalloc is setup, so defer to arch_initcall.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>