From: Catalin Marinas <catalin.marinas@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: linux-mm@kvack.org, linux-arch@vger.kernel.org,
Will Deacon <will@kernel.org>,
Dave P Martin <Dave.Martin@arm.com>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
Szabolcs Nagy <szabolcs.nagy@arm.com>,
Kevin Brodsky <kevin.brodsky@arm.com>,
Andrey Konovalov <andreyknvl@google.com>,
Peter Collingbourne <pcc@google.com>,
Andrew Morton <akpm@linux-foundation.org>
Subject: [PATCH v8 00/28] arm64: Memory Tagging Extension user-space support
Date: Mon, 24 Aug 2020 19:27:30 +0100 [thread overview]
Message-ID: <20200824182758.27267-1-catalin.marinas@arm.com> (raw)
This is version 8 (version 7 here [1]) of the series adding user-space
support for the ARMv8.5 Memory Tagging Extension ([2], [3]). The patches
are also available on this branch:
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux for-next/mte
There have been no further ABI changes and aiming for a 5.10 merge.
While there is an ongoing discussion on allowing the prctl() to act on
all threads of a process, this can be implemented separately if actually
needed (I hope not).
I would be grateful for acks (or naks) on the following patches:
mm:
[PATCH v7 06/29] mm: Add PG_arch_2 page flag
[PATCH v7 07/29] mm: Preserve the PG_arch_2 flag in __split_huge_page_tail()
[PATCH v7 13/29] mm: Introduce arch_calc_vm_flag_bits()
fs:
[PATCH v7 24/29] fs: Handle intra-page faults in copy_mount_options()
arm64 KVM (small new addition in v7):
[PATCH v7 02/29] arm64: mte: CPU feature detection and initial sysreg configuration
Changes in this version:
- Rebased onto v5.9-rc2.
- The MTE initialisation (SCTLR_EL1, GCR_EL1, MAIR_EL1) is now done in
__cpu_setup before the MMU is enabled. This will be needed for the
subsequent in-kernel MTE support and also simplifies the CnP
interaction. The "downside" is that we won't allow CPUs with mixed MTE
features (which isn't really a downside).
- print_pstate() now shows the TCO bit.
- Updates following the regset_user_copyout() and
get_user_pages_remote() changes in mainline.
[1] https://lkml.kernel.org/r/20200715170844.30064-1-catalin.marinas@arm.com
[2] https://community.arm.com/developer/ip-products/processors/b/processors-ip-blog/posts/enhancing-memory-safety
[3] https://developer.arm.com/-/media/Arm%20Developer%20Community/PDF/Arm_Memory_Tagging_Extension_Whitepaper.pdf
[4] https://sourceware.org/pipermail/libc-alpha/2020-June/115039.html
Catalin Marinas (16):
arm64: mte: Use Normal Tagged attributes for the linear map
mm: Preserve the PG_arch_2 flag in __split_huge_page_tail()
arm64: mte: Clear the tags when a page is mapped in user-space with
PROT_MTE
arm64: Avoid unnecessary clear_user_page() indirection
arm64: mte: Tags-aware aware memcmp_pages() implementation
arm64: mte: Add PROT_MTE support to mmap() and mprotect()
mm: Introduce arch_validate_flags()
arm64: mte: Validate the PROT_MTE request via arch_validate_flags()
mm: Allow arm64 mmap(PROT_MTE) on RAM-based files
arm64: mte: Allow user control of the tag check mode via prctl()
arm64: mte: Allow user control of the generated random tags via
prctl()
arm64: mte: Restore the GCR_EL1 register after a suspend
arm64: mte: Allow {set,get}_tagged_addr_ctrl() on non-current tasks
arm64: mte: ptrace: Add PTRACE_{PEEK,POKE}MTETAGS support
arm64: mte: ptrace: Add NT_ARM_TAGGED_ADDR_CTRL regset
fs: Handle intra-page faults in copy_mount_options()
Kevin Brodsky (1):
mm: Introduce arch_calc_vm_flag_bits()
Steven Price (4):
mm: Add PG_arch_2 page flag
mm: Add arch hooks for saving/restoring tags
arm64: mte: Enable swap of tagged pages
arm64: mte: Save tags when hibernating
Vincenzo Frascino (7):
arm64: mte: system register definitions
arm64: mte: CPU feature detection and initial sysreg configuration
arm64: mte: Add specific SIGSEGV codes
arm64: mte: Handle synchronous and asynchronous tag check faults
arm64: mte: Tags-aware copy_{user_,}highpage() implementations
arm64: mte: Kconfig entry
arm64: mte: Add Memory Tagging Extension documentation
Documentation/arm64/cpu-feature-registers.rst | 2 +
Documentation/arm64/elf_hwcaps.rst | 4 +
Documentation/arm64/index.rst | 1 +
.../arm64/memory-tagging-extension.rst | 305 ++++++++++++++++
arch/arm64/Kconfig | 31 ++
arch/arm64/include/asm/cpucaps.h | 3 +-
arch/arm64/include/asm/cpufeature.h | 6 +
arch/arm64/include/asm/hwcap.h | 2 +-
arch/arm64/include/asm/kvm_arm.h | 3 +-
arch/arm64/include/asm/memory.h | 17 +-
arch/arm64/include/asm/mman.h | 56 ++-
arch/arm64/include/asm/mte.h | 86 +++++
arch/arm64/include/asm/page.h | 19 +-
arch/arm64/include/asm/pgtable-prot.h | 2 +
arch/arm64/include/asm/pgtable.h | 46 ++-
arch/arm64/include/asm/processor.h | 12 +-
arch/arm64/include/asm/sysreg.h | 61 ++++
arch/arm64/include/asm/thread_info.h | 4 +-
arch/arm64/include/uapi/asm/hwcap.h | 2 +-
arch/arm64/include/uapi/asm/mman.h | 1 +
arch/arm64/include/uapi/asm/ptrace.h | 4 +
arch/arm64/kernel/Makefile | 1 +
arch/arm64/kernel/cpufeature.c | 35 ++
arch/arm64/kernel/cpuinfo.c | 2 +-
arch/arm64/kernel/entry.S | 37 ++
arch/arm64/kernel/hibernate.c | 118 ++++++
arch/arm64/kernel/mte.c | 336 ++++++++++++++++++
arch/arm64/kernel/process.c | 48 ++-
arch/arm64/kernel/ptrace.c | 51 ++-
arch/arm64/kernel/signal.c | 9 +
arch/arm64/kernel/suspend.c | 4 +
arch/arm64/kernel/syscall.c | 10 +
arch/arm64/kvm/sys_regs.c | 2 +
arch/arm64/lib/Makefile | 2 +
arch/arm64/lib/mte.S | 151 ++++++++
arch/arm64/mm/Makefile | 1 +
arch/arm64/mm/copypage.c | 25 +-
arch/arm64/mm/dump.c | 4 +
arch/arm64/mm/fault.c | 9 +-
arch/arm64/mm/mmu.c | 20 +-
arch/arm64/mm/mteswap.c | 83 +++++
arch/arm64/mm/proc.S | 32 +-
arch/x86/kernel/signal_compat.c | 2 +-
fs/namespace.c | 25 +-
fs/proc/page.c | 3 +
fs/proc/task_mmu.c | 4 +
include/linux/kernel-page-flags.h | 1 +
include/linux/mm.h | 8 +
include/linux/mman.h | 23 +-
include/linux/page-flags.h | 3 +
include/linux/pgtable.h | 28 ++
include/trace/events/mmflags.h | 9 +-
include/uapi/asm-generic/siginfo.h | 4 +-
include/uapi/linux/elf.h | 1 +
include/uapi/linux/prctl.h | 9 +
mm/huge_memory.c | 3 +
mm/mmap.c | 9 +
mm/mprotect.c | 6 +
mm/page_io.c | 10 +
mm/shmem.c | 9 +
mm/swapfile.c | 2 +
mm/util.c | 2 +-
tools/vm/page-types.c | 2 +
63 files changed, 1748 insertions(+), 62 deletions(-)
create mode 100644 Documentation/arm64/memory-tagging-extension.rst
create mode 100644 arch/arm64/include/asm/mte.h
create mode 100644 arch/arm64/kernel/mte.c
create mode 100644 arch/arm64/lib/mte.S
create mode 100644 arch/arm64/mm/mteswap.c
next reply other threads:[~2020-08-24 18:28 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-24 18:27 Catalin Marinas [this message]
2020-08-24 18:27 ` [PATCH v8 01/28] arm64: mte: system register definitions Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 02/28] arm64: mte: Use Normal Tagged attributes for the linear map Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 03/28] arm64: mte: CPU feature detection and initial sysreg configuration Catalin Marinas
2020-08-25 8:53 ` Marc Zyngier
2020-08-25 10:54 ` Catalin Marinas
2020-08-25 13:53 ` Marc Zyngier
2020-08-26 17:08 ` Catalin Marinas
2020-09-04 10:10 ` Marc Zyngier
2020-08-26 15:24 ` Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 04/28] arm64: mte: Add specific SIGSEGV codes Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 05/28] arm64: mte: Handle synchronous and asynchronous tag check faults Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 06/28] mm: Add PG_arch_2 page flag Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 07/28] mm: Preserve the PG_arch_2 flag in __split_huge_page_tail() Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 08/28] arm64: mte: Clear the tags when a page is mapped in user-space with PROT_MTE Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 09/28] arm64: mte: Tags-aware copy_{user_,}highpage() implementations Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 10/28] arm64: Avoid unnecessary clear_user_page() indirection Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 11/28] arm64: mte: Tags-aware aware memcmp_pages() implementation Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 12/28] mm: Introduce arch_calc_vm_flag_bits() Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 13/28] arm64: mte: Add PROT_MTE support to mmap() and mprotect() Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 14/28] mm: Introduce arch_validate_flags() Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 15/28] arm64: mte: Validate the PROT_MTE request via arch_validate_flags() Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 16/28] mm: Allow arm64 mmap(PROT_MTE) on RAM-based files Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 17/28] arm64: mte: Allow user control of the tag check mode via prctl() Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 18/28] arm64: mte: Allow user control of the generated random tags " Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 19/28] arm64: mte: Restore the GCR_EL1 register after a suspend Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 20/28] arm64: mte: Allow {set,get}_tagged_addr_ctrl() on non-current tasks Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 21/28] arm64: mte: ptrace: Add PTRACE_{PEEK,POKE}MTETAGS support Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 22/28] arm64: mte: ptrace: Add NT_ARM_TAGGED_ADDR_CTRL regset Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 23/28] fs: Handle intra-page faults in copy_mount_options() Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 24/28] mm: Add arch hooks for saving/restoring tags Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 25/28] arm64: mte: Enable swap of tagged pages Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 26/28] arm64: mte: Save tags when hibernating Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 27/28] arm64: mte: Kconfig entry Catalin Marinas
2020-08-24 18:44 ` Randy Dunlap
2020-08-25 11:10 ` Catalin Marinas
2020-08-24 18:27 ` [PATCH v8 28/28] arm64: mte: Add Memory Tagging Extension documentation Catalin Marinas
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