[PATCH 0/2] arm64: don't call early_*map() post paging_init()

Leif Lindholm leif.lindholm at linaro.org
Mon Jan 5 10:33:53 PST 2015

This (tiny) series resolves a fairly serious problem with
early_ioremap/iounmap/memremap/memunmap on arm64. These functions
cannot safely be called after paging_init(), but the sanity check
was not triggering.

As a result, a fixmap entry was incorrectly cleared during
early_initcalls on arm64 UEFI systems.

1/2 reworks the arm64 UEFI support code to not attempt these calls
2/2 enables the sanity check

Leif Lindholm (2):
  arm64: don't make early_*map() calls post paging_init()
  arm64: call early_ioremap_reset() in paging_init()

 arch/arm64/kernel/efi.c   | 12 +++---------
 arch/arm64/kernel/setup.c |  2 --
 arch/arm64/mm/mmu.c       |  1 +
 3 files changed, 4 insertions(+), 11 deletions(-)


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