[GIT PULL] Page Table Isolation (PTI) v4.14 backporting base tree

[GIT PULL] Page Table Isolation (PTI) v4.14 backporting base tree

[Ingo Molnar]

Linus,

Please pull the latest WIP.x86-pti.base-for-linus git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.x86-pti.base-for-linus

   # HEAD: 2aeb07365bcd489620f71390a7d2031cd4dfb83e x86/mm/kasan: Don't use vmemmap_populate() to initialize shadow

Note, this tree should be pulled after:

  [RFC GIT PULL] Page Table Isolation (PTI) preparatory tree

This tree contains the v4.14 PTI backport preparatory tree, which consists of four 
merges of upstream trees and 7 cherry-picked commits, which the upcoming PTI work 
depends on:

 e5d77a73f364: Merge commit 'upstream-x86-virt' into WIP.x86/mm
 2ec077c186a0: Merge branch 'upstream-acpi-fixes' into WIP.x86/pti.base
 650400b2ccb8: Merge branch 'upstream-x86-selftests' into WIP.x86/pti.base
 0fd2e9c53d82: Merge commit 'upstream-x86-entry' into WIP.x86/mm

 2aeb07365bcd: x86/mm/kasan: Don't use vmemmap_populate() to initialize shadow
 3382290ed2d5: locking/barriers: Convert users of lockless_dereference() to READ_ONCE()
 c2bc66082e10: locking/barriers: Add implicit smp_read_barrier_depends() to READ_ONCE()
 ab95477e7cb3: bpf: fix build issues on um due to mising bpf_perf_event.h
 2fe1bc1f501d: perf/x86: Enable free running PEBS for REGS_USER/INTR
 f2dbad36c55e: x86: Make X86_BUG_FXSAVE_LEAK detectable in CPUID on AMD
 a8b4db562e72: x86/cpufeature: Add User-Mode Instruction Prevention definitions

pulling this should generate a trivial conflict in arch/x86/kernel/cpu/Makefile, 
which after resolution should result in a no-op merge.

 Thanks,

	Ingo

------------------>
Andi Kleen (1):
      perf/x86: Enable free running PEBS for REGS_USER/INTR

Andrey Ryabinin (1):
      x86/mm/kasan: Don't use vmemmap_populate() to initialize shadow

Daniel Borkmann (1):
      bpf: fix build issues on um due to mising bpf_perf_event.h

Ingo Molnar (4):
      Merge commit 'upstream-x86-entry' into WIP.x86/mm
      Merge branch 'upstream-x86-selftests' into WIP.x86/pti.base
      Merge branch 'upstream-acpi-fixes' into WIP.x86/pti.base
      Merge commit 'upstream-x86-virt' into WIP.x86/mm

Ricardo Neri (1):
      x86/cpufeature: Add User-Mode Instruction Prevention definitions

Rudolf Marek (1):
      x86: Make X86_BUG_FXSAVE_LEAK detectable in CPUID on AMD

Will Deacon (2):
      locking/barriers: Add implicit smp_read_barrier_depends() to READ_ONCE()
      locking/barriers: Convert users of lockless_dereference() to READ_ONCE()

[ no-op tree, no diffstat. ]

Re: [GIT PULL] Page Table Isolation (PTI) v4.14 backporting base tree

[Linus Torvalds]

Ok, so I've pulled the two prep trees, since they are obviously safe
and don't change any code.

I'm going to read through the actual real changes again one more time
today, but as mentioned, I almost certainly won't actually pull them
until after rc4. I'd like to have at least one calm rc here.

But as part of this all, _please_ make these prep pulls actually work
out - even if you end up having more work in the actual x86 entry tree
and the eventual PTI changes themselves, make sure they really are
based on this, and contain no  more games. I was already a bit dubious
about the whole "let's cherry-pick and then merge to have a common
point", I'm going to be _really_ annoyed if we then need even more odd
games here.

So keep that common point as the common point, and no more backport
games or odd back-merges.

              Linus