linux-kernel - [GIT PULL] Please pull powerpc/linux.git powerpc-5.1-3 tag

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Date:   Fri, 22 Mar 2019 23:58:08 +1100
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     ben@...adent.org.uk, christophe.leroy@....fr,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        malat@...ian.org, mark.cave-ayland@...nde.co.uk
Subject: [GIT PULL] Please pull powerpc/linux.git powerpc-5.1-3 tag

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Hi Linus,

Please pull some powerpc fixes for 5.1:

The following changes since commit 9e98c678c2d6ae3a17cb2de55d17f69dddaa231b:

  Linux 5.1-rc1 (2019-03-17 14:22:26 -0700)

are available in the git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git tags/powerpc-5.1-3

for you to fetch changes up to 92edf8df0ff2ae86cc632eeca0e651fd8431d40d:

  powerpc/security: Fix spectre_v2 reporting (2019-03-21 21:09:03 +1100)

- ------------------------------------------------------------------
powerpc fixes for 5.1 #3

One fix for a boot failure on 32-bit, introduced during the merge window.

A fix for our handling of CLOCK_MONOTONIC in the 64-bit VDSO. Changing the wall
clock across the Y2038 boundary could cause CLOCK_MONOTONIC to jump forward and
backward.

Our spectre_v2 reporting was a bit confusing due to a bug I introduced. On some
systems it was reporting that the count cache was disabled and also that we were
flushing the count cache on context switch. Only the former is true, and given
that the count cache is disabled it doesn't make any sense to flush it. No one
reported it, so presumably the presence of any mitigation is all people check
for.

Finally a small build fix for zsmalloc on 32-bit.

Thanks to:
  Ben Hutchings, Christophe Leroy, Diana Craciun, Guenter Roeck, Michael Neuling.

- ------------------------------------------------------------------
Ben Hutchings (1):
      powerpc/mm: Only define MAX_PHYSMEM_BITS in SPARSEMEM configurations

Christophe Leroy (1):
      powerpc/6xx: fix setup and use of SPRN_SPRG_PGDIR for hash32

Michael Ellerman (2):
      powerpc/vdso64: Fix CLOCK_MONOTONIC inconsistencies across Y2038
      powerpc/security: Fix spectre_v2 reporting


 arch/powerpc/include/asm/mmu.h            |  2 +-
 arch/powerpc/include/asm/vdso_datapage.h  |  8 ++++----
 arch/powerpc/kernel/cpu_setup_6xx.S       |  3 ---
 arch/powerpc/kernel/head_32.S             |  6 ++++++
 arch/powerpc/kernel/security.c            | 23 ++++++++---------------
 arch/powerpc/kernel/vdso64/gettimeofday.S |  4 ++--
 arch/powerpc/mm/hash_low_32.S             |  8 ++++----
 7 files changed, 25 insertions(+), 29 deletions(-)
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