From: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
To: npiggin@gmail.com, benh@kernel.crashing.org, paulus@samba.org,
mpe@ellerman.id.au, akpm@linux-foundation.org, x86@kernel.org
Cc: linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org,
"Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Subject: [PATCH V4 0/5] NestMMU pte upgrade workaround for mprotect
Date: Tue, 18 Dec 2018 15:11:32 +0530 [thread overview]
Message-ID: <20181218094137.13732-1-aneesh.kumar@linux.ibm.com> (raw)
We can upgrade pte access (R -> RW transition) via mprotect. We need
to make sure we follow the recommended pte update sequence as outlined in
commit bd5050e38aec ("powerpc/mm/radix: Change pte relax sequence to handle nest MMU hang")
for such updates. This patch series do that.
Changes from V3:
* Build fix for x86
Changes from V2:
* Update commit message for patch 4
* use radix tlb flush routines directly.
Changes from V1:
* Restrict ths only for R->RW upgrade. We don't need to do this for Autonuma
* Restrict this only for radix translation mode.
Aneesh Kumar K.V (5):
mm: Update ptep_modify_prot_start/commit to take vm_area_struct as arg
mm: update ptep_modify_prot_commit to take old pte value as arg
arch/powerpc/mm: Nest MMU workaround for mprotect RW upgrade.
mm/hugetlb: Add prot_modify_start/commit sequence for hugetlb update
arch/powerpc/mm/hugetlb: NestMMU workaround for hugetlb mprotect RW
upgrade
arch/powerpc/include/asm/book3s/64/hugetlb.h | 12 +++++++++
arch/powerpc/include/asm/book3s/64/pgtable.h | 18 +++++++++++++
arch/powerpc/include/asm/book3s/64/radix.h | 4 +++
arch/powerpc/mm/hugetlbpage-hash64.c | 27 ++++++++++++++++++++
arch/powerpc/mm/hugetlbpage-radix.c | 17 ++++++++++++
arch/powerpc/mm/pgtable-book3s64.c | 27 ++++++++++++++++++++
arch/powerpc/mm/pgtable-radix.c | 18 +++++++++++++
arch/s390/include/asm/pgtable.h | 5 ++--
arch/s390/mm/pgtable.c | 8 +++---
arch/x86/include/asm/paravirt.h | 13 +++++-----
arch/x86/include/asm/paravirt_types.h | 5 ++--
arch/x86/xen/mmu.h | 4 +--
arch/x86/xen/mmu_pv.c | 8 +++---
fs/proc/task_mmu.c | 8 +++---
include/asm-generic/pgtable.h | 18 ++++++-------
include/linux/hugetlb.h | 20 +++++++++++++++
mm/hugetlb.c | 8 +++---
mm/memory.c | 8 +++---
mm/mprotect.c | 6 ++---
19 files changed, 193 insertions(+), 41 deletions(-)
--
2.19.2
next reply other threads:[~2018-12-18 9:44 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-18 9:41 Aneesh Kumar K.V [this message]
2018-12-18 9:41 ` [PATCH V4 1/5] mm: Update ptep_modify_prot_start/commit to take vm_area_struct as arg Aneesh Kumar K.V
2018-12-18 9:41 ` [PATCH V4 2/5] mm: update ptep_modify_prot_commit to take old pte value " Aneesh Kumar K.V
2018-12-18 9:41 ` [PATCH V4 3/5] arch/powerpc/mm: Nest MMU workaround for mprotect RW upgrade Aneesh Kumar K.V
2018-12-18 9:41 ` [PATCH V4 4/5] mm/hugetlb: Add prot_modify_start/commit sequence for hugetlb update Aneesh Kumar K.V
2018-12-18 9:41 ` [PATCH V4 5/5] arch/powerpc/mm/hugetlb: NestMMU workaround for hugetlb mprotect RW upgrade Aneesh Kumar K.V
2018-12-18 17:22 ` Christoph Hellwig
2018-12-19 3:20 ` Aneesh Kumar K.V
2018-12-19 6:31 ` Christoph Hellwig
2018-12-20 0:30 ` Benjamin Herrenschmidt
2018-12-20 7:11 ` Christoph Hellwig
2018-12-18 17:17 ` [PATCH V4 0/5] NestMMU pte upgrade workaround for mprotect Christoph Hellwig
2018-12-18 22:30 ` Benjamin Herrenschmidt
2018-12-19 3:18 ` Aneesh Kumar K.V
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20181218094137.13732-1-aneesh.kumar@linux.ibm.com \
--to=aneesh.kumar@linux.ibm.com \
--cc=akpm@linux-foundation.org \
--cc=benh@kernel.crashing.org \
--cc=linux-mm@kvack.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=mpe@ellerman.id.au \
--cc=npiggin@gmail.com \
--cc=paulus@samba.org \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).