Breno - please have a look at this branch. The only backport was
'powerpc/thp: Invalidate old 64K based hash page mapping before insert
of 4k pte'.
The following changes since commit
12dc9db804c054de7176138962a4671e2c1cbb7d:
UBUNTU: Ubuntu-3.13.0-35.62 (2014-08-14 21:23:50 -0400)
are available in the git repository at:
git://kernel.ubuntu.com/rtg/ubuntu-trusty.git lp1357014-powerpc-thp
for you to fetch changes up to 80436cd3c451af1b86611f5842185656607d0e76:
powerpc/thp: Add tracepoints to track hugepage invalidate (2014-08-15
14:36:42 -0600)
----------------------------------------------------------------
Aneesh Kumar K.V (8):
powerpc/thp: Add write barrier after updating the valid bit
powerpc/thp: Don't recompute vsid and ssize in loop on invalidate
powerpc/thp: Invalidate old 64K based hash page mapping before insert of
4k pte
powerpc/thp: Handle combo pages in invalidate
powerpc/thp: Invalidate with vpn in loop
powerpc/thp: Use ACCESS_ONCE when loading pmdp
powerpc/mm: Use read barrier when creating real_pte
powerpc/thp: Add tracepoints to track hugepage invalidate
arch/powerpc/include/asm/machdep.h | 6 +++---
arch/powerpc/include/asm/pgtable-ppc64.h | 2 +-
arch/powerpc/include/asm/pte-hash64-64k.h | 30 +++++++++++++++++++++++++-----
arch/powerpc/mm/hash_native_64.c | 40
+++++++++++-----------------------------
arch/powerpc/mm/hugepage-hash64.c | 94
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------------
arch/powerpc/mm/pgtable_64.c | 44
+++++++++++++++++++++++++++++---------------
arch/powerpc/mm/tlb_hash64.c | 6 +++++-
arch/powerpc/platforms/pseries/lpar.c | 20 ++++++--------------
include/trace/events/thp.h | 88
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
9 files changed, 250 insertions(+), 80 deletions(-)
create mode 100644 include/trace/events/thp.h
** Also affects: linux (Ubuntu Trusty)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Trusty)
Status: New => In Progress
** Changed in: linux (Ubuntu Trusty)
Assignee: (unassigned) => Tim Gardner (timg-tpi)
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https://bugs.launchpad.net/bugs/1357014
Title:
Add THP fixes in 14.10 kernel
Status in “linux” package in Ubuntu:
Fix Committed
Status in “linux” source package in Trusty:
In Progress
Status in “linux” source package in Utopic:
Fix Committed
Bug description:
Hi Canonical,
We would like to include 8 patches regarding Transparent Huge Page for
powerpc. The patches are already upstream on Ben powerpc-next tree and
should be sent to Linus' tree today, which mean that they are expected
to make 3.17.
Here are the patches
9e813308a5c18c58f9ccae1ec72ed4e14eaf9025 powerpc/thp: Add tracepoints to
track hugepage invalidate
85c1fafd7262e68ad821ee1808686b1392b1167d powerpc/mm: Use read barrier when
creating real_pte
7e467245bf5226db34c4b12d3cbacfa2f7a15a8b powerpc/thp: Use ACCESS_ONCE when
loading pmdp
969b7b208f7408712a3526856e4ae60ad13f6928 powerpc/thp: Invalidate with vpn in
loop
fc0479557572375100ef16c71170b29a98e0d69a powerpc/thp: Handle combo pages in
invalidate
629149fae478f0ac6bf705a535708b192e9c6b59 powerpc/thp: Invalidate old 64K
based hash page mapping before insert of 4k pte
fa1f8ae80f8bb996594167ff4750a0b0a5a5bb5d powerpc/thp: Don't recompute vsid
and ssize in loop on invalidate
b0aa44a3dfae3d8f45bd1264349aa87f87b7774f powerpc/thp: Add write barrier after
updating the valid bit
I am also adding the patches here for reference.
Thank you,
Breno
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