From: Alexandre Ghiti <alexghiti@rivosinc.com>
To: Ryan Roberts <ryan.roberts@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Alexander Potapenko <glider@google.com>,
Marco Elver <elver@google.com>,
Dmitry Vyukov <dvyukov@google.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Ard Biesheuvel <ardb@kernel.org>,
Anup Patel <anup@brainfault.org>,
Atish Patra <atishp@atishpatra.org>,
Andrey Ryabinin <ryabinin.a.a@gmail.com>,
Andrey Konovalov <andreyknvl@gmail.com>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com,
linux-riscv@lists.infradead.org, linux-efi@vger.kernel.org,
kvm@vger.kernel.org, kvm-riscv@lists.infradead.org,
linux-mm@kvack.org
Cc: Alexandre Ghiti <alexghiti@rivosinc.com>
Subject: [PATCH 00/12] Make riscv use THP contpte support for arm64
Date: Wed, 8 May 2024 21:19:19 +0200 [thread overview]
Message-ID: <20240508191931.46060-1-alexghiti@rivosinc.com> (raw)
This allows riscv to support napot (riscv equivalent to contpte) THPs by
moving arm64 contpte support into mm, the previous series [1] only merging
riscv and arm64 implementations of hugetlbfs contpte.
riscv contpte specification allows for different contpte sizes, although
only 64KB is supported for now. So in this patchset is implemented the
support of multiple contpte sizes, which introduces a few arch specific
helpers to determine what sizes are supported. Even though only one size
is supported on riscv, the implementation of the multi size support is to
show what it will look like when we support other sizes, and make sure
it does not regress arm64.
I tested arm64 using the cow kselftest and a kernel build with 4KB base
page size and 64KB contpte. riscv was tested with the same tests on *all*
contpte sizes that fit in the last page table level (support for PMD sizes
is not present here). Both arch were only tested on qemu.
Alexandre Ghiti (12):
mm, arm64: Rename ARM64_CONTPTE to THP_CONTPTE
mm, riscv, arm64: Use common ptep_get() function
mm, riscv, arm64: Use common set_ptes() function
mm, riscv, arm64: Use common ptep_get_lockless() function
mm, riscv, arm64: Use common set_pte() function
mm, riscv, arm64: Use common pte_clear() function
mm, riscv, arm64: Use common ptep_get_and_clear() function
mm, riscv, arm64: Use common ptep_test_and_clear_young() function
mm, riscv, arm64: Use common ptep_clear_flush_young() function
mm, riscv, arm64: Use common ptep_set_access_flags() function
mm, riscv, arm64: Use common ptep_set_wrprotect()/wrprotect_ptes()
functions
mm, riscv, arm64: Use common
get_and_clear_full_ptes()/clear_full_ptes() functions
arch/arm64/Kconfig | 9 -
arch/arm64/include/asm/pgtable.h | 318 +++++---------
arch/arm64/mm/Makefile | 1 -
arch/arm64/mm/contpte.c | 408 ------------------
arch/arm64/mm/hugetlbpage.c | 6 +-
arch/arm64/mm/mmu.c | 2 +-
arch/riscv/include/asm/kfence.h | 4 +-
arch/riscv/include/asm/pgtable.h | 206 +++++++++-
arch/riscv/kernel/efi.c | 4 +-
arch/riscv/kernel/hibernate.c | 2 +-
arch/riscv/kvm/mmu.c | 26 +-
arch/riscv/mm/fault.c | 2 +-
arch/riscv/mm/init.c | 4 +-
arch/riscv/mm/kasan_init.c | 16 +-
arch/riscv/mm/pageattr.c | 8 +-
arch/riscv/mm/pgtable.c | 6 +-
include/linux/contpte.h | 37 ++
mm/Kconfig | 9 +
mm/contpte.c | 685 ++++++++++++++++++++++++++++++-
19 files changed, 1056 insertions(+), 697 deletions(-)
delete mode 100644 arch/arm64/mm/contpte.c
create mode 100644 include/linux/contpte.h
--
2.39.2
next reply other threads:[~2024-05-08 19:19 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-08 19:19 Alexandre Ghiti [this message]
2024-05-08 19:19 ` [PATCH 01/12] mm, arm64: Rename ARM64_CONTPTE to THP_CONTPTE Alexandre Ghiti
2024-05-09 0:46 ` Barry Song
2024-05-13 13:09 ` Alexandre Ghiti
2024-05-14 9:30 ` Barry Song
2024-05-08 19:19 ` [PATCH 02/12] mm, riscv, arm64: Use common ptep_get() function Alexandre Ghiti
2024-05-08 19:19 ` [PATCH 03/12] mm, riscv, arm64: Use common set_ptes() function Alexandre Ghiti
2024-05-08 19:19 ` [PATCH 04/12] mm, riscv, arm64: Use common ptep_get_lockless() function Alexandre Ghiti
2024-05-08 19:19 ` [PATCH 05/12] mm, riscv, arm64: Use common set_pte() function Alexandre Ghiti
2024-05-08 19:19 ` [PATCH 06/12] mm, riscv, arm64: Use common pte_clear() function Alexandre Ghiti
2024-05-08 19:19 ` [PATCH 07/12] mm, riscv, arm64: Use common ptep_get_and_clear() function Alexandre Ghiti
2024-05-08 19:19 ` [PATCH 08/12] mm, riscv, arm64: Use common ptep_test_and_clear_young() function Alexandre Ghiti
2024-05-08 19:19 ` [PATCH 09/12] mm, riscv, arm64: Use common ptep_clear_flush_young() function Alexandre Ghiti
2024-05-08 19:19 ` [PATCH 10/12] mm, riscv, arm64: Use common ptep_set_access_flags() function Alexandre Ghiti
2024-05-08 19:19 ` [PATCH 11/12] mm, riscv, arm64: Use common ptep_set_wrprotect()/wrprotect_ptes() functions Alexandre Ghiti
2024-05-08 19:19 ` [PATCH 12/12] mm, riscv, arm64: Use common get_and_clear_full_ptes()/clear_full_ptes() functions Alexandre Ghiti
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