iommu/dma: Don't reserve PCI I/O windows

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commit 938f1bbe35 upstream.

Even if a host controller's CPU-side MMIO windows into PCI I/O space do
happen to leak into PCI memory space such that it might treat them as
peer addresses, trying to reserve the corresponding I/O space addresses
doesn't do anything to help solve that problem. Stop doing a silly thing.

Fixes: fade1ec055 ("iommu/dma: Avoid PCI host bridge windows")
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Robin Murphy 2017-03-16 17:00:17 +00:00 • committed by Greg Kroah-Hartman

parent d7fcb303d1

commit f0c31c674a

1 changed files with 1 additions and 2 deletions

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drivers/iommu/dma-iommu.c

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