From: Anshuman Khandual <anshuman.khandual@arm.com>
To: linux-mm@kvack.org
Cc: christophe.leroy@c-s.fr,
Anshuman Khandual <anshuman.khandual@arm.com>,
Jonathan Corbet <corbet@lwn.net>,
Andrew Morton <akpm@linux-foundation.org>,
Mike Rapoport <rppt@linux.ibm.com>,
Vineet Gupta <vgupta@synopsys.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H. Peter Anvin" <hpa@zytor.com>,
"Kirill A . Shutemov" <kirill@shutemov.name>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
linux-snps-arc@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org,
linux-riscv@lists.infradead.org, x86@kernel.org,
linux-doc@vger.kernel.org, linux-arch@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH V2 0/3] mm/debug: Add more arch page table helper tests
Date: Tue, 24 Mar 2020 10:52:52 +0530 [thread overview]
Message-ID: <1585027375-9997-1-git-send-email-anshuman.khandual@arm.com> (raw)
This series adds more arch page table helper tests. The new tests here are
either related to core memory functions and advanced arch pgtable helpers.
This also creates a documentation file enlisting all expected semantics as
suggested by Mike Rapoport (https://lkml.org/lkml/2020/1/30/40).
This series has been tested on arm64 and x86 platforms. There is just one
expected failure on arm64 that will be fixed when we enable THP migration.
[ 21.741634] WARNING: CPU: 0 PID: 1 at mm/debug_vm_pgtable.c:782
which corresponds to
WARN_ON(!pmd_present(pmd_mknotpresent(pmd_mkhuge(pmd))))
There are many TRANSPARENT_HUGEPAGE and ARCH_HAS_TRANSPARENT_HUGEPAGE_PUD
ifdefs scattered across the test. But consolidating all the fallback stubs
is not very straight forward because ARCH_HAS_TRANSPARENT_HUGEPAGE_PUD is
not explicitly dependent on ARCH_HAS_TRANSPARENT_HUGEPAGE.
This series has been build tested on many platforms including the ones that
subscribe the test through ARCH_HAS_DEBUG_VM_PGTABLE.
This series is based on v5.6-rc7 after applying these following patches.
1. https://patchwork.kernel.org/patch/11431277/
2. https://patchwork.kernel.org/patch/11452185/
Changes in V2:
- Dropped CONFIG_ARCH_HAS_PTE_SPECIAL per Christophe
- Dropped CONFIG_NUMA_BALANCING per Christophe
- Dropped CONFIG_HAVE_ARCH_SOFT_DIRTY per Christophe
- Dropped CONFIG_MIGRATION per Christophe
- Replaced CONFIG_S390 with __HAVE_ARCH_PMDP_INVALIDATE
- Moved page allocation & free inside swap_migration_tests() per Christophe
- Added CONFIG_TRANSPARENT_HUGEPAGE to protect pfn_pmd()
- Added CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD to protect pfn_pud()
- Added a patch for other arch advanced page table helper tests
- Added a patch creating a documentation for page table helper semantics
Changes in V1: (https://patchwork.kernel.org/patch/11408253/)
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: linux-snps-arc@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-s390@vger.kernel.org
Cc: linux-riscv@lists.infradead.org
Cc: x86@kernel.org
Cc: linux-doc@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Anshuman Khandual (3):
mm/debug: Add tests validating arch page table helpers for core features
mm/debug: Add tests validating arch advanced page table helpers
Documentation/mm: Add descriptions for arch page table helpers
Documentation/vm/arch_pgtable_helpers.rst | 256 ++++++++++
mm/debug_vm_pgtable.c | 594 +++++++++++++++++++++-
2 files changed, 839 insertions(+), 11 deletions(-)
create mode 100644 Documentation/vm/arch_pgtable_helpers.rst
--
2.20.1
next reply other threads:[~2020-03-24 5:23 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-24 5:22 Anshuman Khandual [this message]
2020-03-24 5:22 ` [PATCH V2 1/3] mm/debug: Add tests validating arch page table helpers for core features Anshuman Khandual
2020-03-24 13:29 ` Zi Yan
2020-03-26 2:18 ` Anshuman Khandual
2020-03-26 17:08 ` Zi Yan
2020-03-30 8:56 ` [mm/debug] f675f2f91d: WARNING:at_mm/debug_vm_pgtable.c:#debug_vm_pgtable kernel test robot
2020-04-05 14:49 ` Anshuman Khandual
2020-03-24 5:22 ` [PATCH V2 2/3] mm/debug: Add tests validating arch advanced page table helpers Anshuman Khandual
2020-03-27 7:41 ` [mm/debug] d157503f6f: WARNING:at_mm/debug_vm_pgtable.c:#debug_vm_pgtable kernel test robot
2020-03-24 5:22 ` [PATCH V2 3/3] Documentation/mm: Add descriptions for arch page table helpers Anshuman Khandual
2020-03-26 2:23 ` [PATCH V2 0/3] mm/debug: Add more arch page table helper tests Anshuman Khandual
2020-03-26 15:23 ` Christophe Leroy
2020-03-27 6:46 ` Anshuman Khandual
2020-03-27 7:00 ` Christophe Leroy
2020-03-29 14:21 ` Anshuman Khandual
2020-03-31 12:30 ` Gerald Schaefer
2020-04-05 12:28 ` Anshuman Khandual
2020-04-07 15:54 ` Gerald Schaefer
2020-04-08 7:11 ` Anshuman Khandual
2020-04-08 12:15 ` Gerald Schaefer
2020-04-09 1:06 ` Anshuman Khandual
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