[PATCHv2 0/2] PCI_IOBASE fixes
mark.rutland at arm.com
Thu Jan 22 10:20:34 PST 2015
Mark Brown reported  build failures in the page table dump code, due
to lack of an explicit include for PCI_IOBASE.
While looking into that I spotted that the VA space allocated for PCI I/O
overlaps with the fixmap allocation, and that in a couple of places we assume
that the I/O space is 16MiB while the allocated VA space (and associated
IO_SPACE_LIMIT) cover 32MiB.
The first patch fixes the VA space allocation, preventing overlap, and
introduces common definitions for the I/O space layout, preventing futurre
issues if the I/O space layout is modified.
The second patch adds the missing explicit includes for the remaining
definitions used in the dump code, and has been updated from the
previous posting  to take the effects of patch 1 into account.
I've built and boot tested a v3.19-rc4 defconfig with these patches
Since v1 :
* Restore I/O space to 16MiB, per Catalin's request.
* Add PCI_IO_SIZE along with comment to ensure the I/O space size is
consistent through all uses.
* Reorder mem_init entries for consistency.
Mark Rutland (2):
arm64: Fix overlapping VA allocations
arm64: mm: dump: add missing includes
arch/arm64/include/asm/io.h | 5 +++--
arch/arm64/include/asm/memory.h | 10 +++++++++-
arch/arm64/mm/dump.c | 8 ++++++--
arch/arm64/mm/init.c | 5 +++--
4 files changed, 21 insertions(+), 7 deletions(-)
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