linux-kernel - [GIT PULL] Please pull powerpc/linux.git powerpc-5.1-6 tag

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Date:   Sun, 28 Apr 2019 16:55:57 +1000
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     aik@...abs.ru, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: [GIT PULL] Please pull powerpc/linux.git powerpc-5.1-6 tag

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Hi Linus,

Please pull some more powerpc fixes for 5.1.

I was 50/50 on whether these were worthy of sending at rc6, but decided I would
send them as they're in obscure areas of the code and they do fix user-visible
bugs.

cheers


The following changes since commit cf7cf6977f531acd5dfe55250d0ee8cbbb6f1ae8:

  powerpc/mm: Define MAX_PHYSMEM_BITS for all 64-bit configs (2019-04-10 14:45:57 +1000)

are available in the git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git tags/powerpc-5.1-6

for you to fetch changes up to 7a3a4d763837d3aa654cd1059030950410c04d77:

  powerpc/mm_iommu: Allow pinning large regions (2019-04-17 21:36:51 +1000)

- ------------------------------------------------------------------
powerpc fixes for 5.1 #6

A one-liner to make our Radix MMU support depend on HUGETLB_PAGE. We use some of
the hugetlb inlines (eg. pud_huge()) when operating on the linear mapping and if
they're compiled into empty wrappers we can corrupt memory.

Then two fixes to our VFIO IOMMU code. The first is not a regression but fixes
the locking to avoid a user-triggerable deadlock.

The second does fix a regression since rc1, and depends on the first fix. It
makes it possible to run guests with large amounts of memory again (~256GB).

Thanks to:
  Alexey Kardashevskiy.

- ------------------------------------------------------------------
Alexey Kardashevskiy (2):
      powerpc/mm_iommu: Fix potential deadlock
      powerpc/mm_iommu: Allow pinning large regions

Michael Ellerman (1):
      powerpc/mm/radix: Make Radix require HUGETLB_PAGE


 arch/powerpc/configs/skiroot_defconfig |  1 +
 arch/powerpc/mm/mmu_context_iommu.c    | 97 ++++++++++++++++++++--------------
 arch/powerpc/platforms/Kconfig.cputype |  2 +-
 3 files changed, 60 insertions(+), 40 deletions(-)
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