[PATCH 0/5] Remove s390 sw-emulated hugepages and cleanup

[Dominik Dingel]

Hi everyone,

there is a potential bug with KVM and hugetlbfs if the hardware does not
support hugepages (EDAT1).
We fix this by making EDAT1 a hard requirement for hugepages and 
therefore removing and simplifying code.

As s390, with the sw-emulated hugepages, was the only user of arch_prepare/release_hugepage
I also removed theses calls from common and other architecture code.

Thanks,
    Dominik

Dominik Dingel (5):
  s390/mm: make hugepages_supported a boot time decision
  mm/hugetlb: remove unused arch hook prepare/release_hugepage
  mm/hugetlb: remove arch_prepare/release_hugepage from arch headers
  s390/hugetlb: remove dead code for sw emulated huge pages
  s390/mm: forward check for huge pmds to pmd_large()

 arch/arm/include/asm/hugetlb.h     |  9 ------
 arch/arm64/include/asm/hugetlb.h   |  9 ------
 arch/ia64/include/asm/hugetlb.h    |  9 ------
 arch/metag/include/asm/hugetlb.h   |  9 ------
 arch/mips/include/asm/hugetlb.h    |  9 ------
 arch/powerpc/include/asm/hugetlb.h |  9 ------
 arch/s390/include/asm/hugetlb.h    |  3 --
 arch/s390/include/asm/page.h       |  8 ++---
 arch/s390/kernel/setup.c           |  2 ++
 arch/s390/mm/hugetlbpage.c         | 65 +++-----------------------------------
 arch/s390/mm/pgtable.c             |  2 ++
 arch/sh/include/asm/hugetlb.h      |  9 ------
 arch/sparc/include/asm/hugetlb.h   |  9 ------
 arch/tile/include/asm/hugetlb.h    |  9 ------
 arch/x86/include/asm/hugetlb.h     |  9 ------
 mm/hugetlb.c                       | 10 ------
 16 files changed, 12 insertions(+), 168 deletions(-)

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2.3.7