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: linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org,
"Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Subject: [PATCH V5 0/5] NestMMU pte upgrade workaround for mprotect
Date: Wed, 16 Jan 2019 14:20:30 +0530 [thread overview]
Message-ID: <20190116085035.29729-1-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 V4:
* Drop EXPORT_SYMBOL
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 | 25 ++++++++++++++++++++
arch/powerpc/mm/hugetlbpage-radix.c | 17 +++++++++++++
arch/powerpc/mm/pgtable-book3s64.c | 25 ++++++++++++++++++++
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, 189 insertions(+), 41 deletions(-)
--
2.20.1
next reply other threads:[~2019-01-16 8:51 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-16 8:50 Aneesh Kumar K.V [this message]
2019-01-16 8:50 ` [PATCH V5 1/5] mm: Update ptep_modify_prot_start/commit to take vm_area_struct as arg Aneesh Kumar K.V
2019-01-30 10:33 ` Michael Ellerman
2019-01-16 8:50 ` [PATCH V5 2/5] mm: update ptep_modify_prot_commit to take old pte value " Aneesh Kumar K.V
2019-01-30 10:46 ` Michael Ellerman
2019-01-31 5:03 ` Aneesh Kumar K.V
2019-01-16 8:50 ` [PATCH V5 3/5] arch/powerpc/mm: Nest MMU workaround for mprotect RW upgrade Aneesh Kumar K.V
2019-01-30 10:52 ` Michael Ellerman
2019-01-31 5:07 ` Aneesh Kumar K.V
2019-01-16 8:50 ` [PATCH V5 4/5] mm/hugetlb: Add prot_modify_start/commit sequence for hugetlb update Aneesh Kumar K.V
2019-01-30 10:54 ` Michael Ellerman
2019-01-16 8:50 ` [PATCH V5 5/5] arch/powerpc/mm/hugetlb: NestMMU workaround for hugetlb mprotect RW upgrade Aneesh Kumar K.V
2019-01-30 11:01 ` Michael Ellerman
2019-01-29 10:43 ` [PATCH V5 0/5] NestMMU pte upgrade workaround for mprotect Aneesh Kumar K.V
2019-01-29 18:29 ` Andrew Morton
2019-02-26 23:37 ` Andrew Morton
2019-02-27 8:58 ` Aneesh Kumar K.V
2019-02-28 19:39 ` Andrew Morton
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