From: Joey Gouly <joey.gouly@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: akpm@linux-foundation.org, aneesh.kumar@kernel.org,
aneesh.kumar@linux.ibm.com, bp@alien8.de, broonie@kernel.org,
catalin.marinas@arm.com, christophe.leroy@csgroup.eu,
dave.hansen@linux.intel.com, hpa@zytor.com, joey.gouly@arm.com,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
linuxppc-dev@lists.ozlabs.org, maz@kernel.org, mingo@redhat.com,
mpe@ellerman.id.au, naveen.n.rao@linux.ibm.com,
npiggin@gmail.com, oliver.upton@linux.dev, shuah@kernel.org,
szabolcs.nagy@arm.com, tglx@linutronix.de, will@kernel.org,
x86@kernel.org, kvmarm@lists.linux.dev
Subject: [PATCH v4 00/29] arm64: Permission Overlay Extension
Date: Fri, 3 May 2024 14:01:18 +0100 [thread overview]
Message-ID: <20240503130147.1154804-1-joey.gouly@arm.com> (raw)
Hi all,
This series implements the Permission Overlay Extension introduced in 2022
VMSA enhancements [1]. It is based on v6.9-rc5.
One possible issue with this version, I took the last bit of HWCAP2.
Changes since v3[2]:
- Moved Kconfig to nearer the end of the series
- Reworked MMU Fault path, to check for POE faults earlier, under the mm lock
- Rework VM_FLAGS to use Kconfig option
- Don't check POR_EL0 in MTE sync tags function
- Reworked KVM to fit into VNCR/VM configuration changes
- Use new AT instruction in KVM
- Rebase onto v6.9-rc5
The Permission Overlay Extension allows to constrain permissions on memory
regions. This can be used from userspace (EL0) without a system call or TLB
invalidation.
POE is used to implement the Memory Protection Keys [3] Linux syscall.
The first few patches add the basic framework, then the PKEYS interface is
implemented, and then the selftests are made to work on arm64.
I have tested the modified protection_keys test on x86_64, but not PPC.
I haven't build tested the x86/ppc arch changes.
Thanks,
Joey
Joey Gouly (29):
powerpc/mm: add ARCH_PKEY_BITS to Kconfig
x86/mm: add ARCH_PKEY_BITS to Kconfig
mm: use ARCH_PKEY_BITS to define VM_PKEY_BITN
arm64: disable trapping of POR_EL0 to EL2
arm64: cpufeature: add Permission Overlay Extension cpucap
arm64: context switch POR_EL0 register
KVM: arm64: Save/restore POE registers
KVM: arm64: make kvm_at() take an OP_AT_*
KVM: arm64: use `at s1e1a` for POE
arm64: enable the Permission Overlay Extension for EL0
arm64: re-order MTE VM_ flags
arm64: add POIndex defines
arm64: convert protection key into vm_flags and pgprot values
arm64: mask out POIndex when modifying a PTE
arm64: handle PKEY/POE faults
arm64: add pte_access_permitted_no_overlay()
arm64: implement PKEYS support
arm64: add POE signal support
arm64: enable PKEY support for CPUs with S1POE
arm64: enable POE and PIE to coexist
arm64/ptrace: add support for FEAT_POE
arm64: add Permission Overlay Extension Kconfig
kselftest/arm64: move get_header()
selftests: mm: move fpregs printing
selftests: mm: make protection_keys test work on arm64
kselftest/arm64: add HWCAP test for FEAT_S1POE
kselftest/arm64: parse POE_MAGIC in a signal frame
kselftest/arm64: Add test case for POR_EL0 signal frame records
KVM: selftests: get-reg-list: add Permission Overlay registers
Documentation/arch/arm64/elf_hwcaps.rst | 2 +
arch/arm64/Kconfig | 22 +++
arch/arm64/include/asm/cpufeature.h | 6 +
arch/arm64/include/asm/el2_setup.h | 10 +-
arch/arm64/include/asm/hwcap.h | 1 +
arch/arm64/include/asm/kvm_asm.h | 3 +-
arch/arm64/include/asm/kvm_host.h | 4 +
arch/arm64/include/asm/mman.h | 8 +-
arch/arm64/include/asm/mmu.h | 1 +
arch/arm64/include/asm/mmu_context.h | 51 ++++++-
arch/arm64/include/asm/pgtable-hwdef.h | 10 ++
arch/arm64/include/asm/pgtable-prot.h | 8 +-
arch/arm64/include/asm/pgtable.h | 34 ++++-
arch/arm64/include/asm/pkeys.h | 110 ++++++++++++++
arch/arm64/include/asm/por.h | 33 +++++
arch/arm64/include/asm/processor.h | 1 +
arch/arm64/include/asm/sysreg.h | 3 +
arch/arm64/include/asm/traps.h | 1 +
arch/arm64/include/asm/vncr_mapping.h | 1 +
arch/arm64/include/uapi/asm/hwcap.h | 1 +
arch/arm64/include/uapi/asm/sigcontext.h | 7 +
arch/arm64/kernel/cpufeature.c | 23 +++
arch/arm64/kernel/cpuinfo.c | 1 +
arch/arm64/kernel/process.c | 28 ++++
arch/arm64/kernel/ptrace.c | 46 ++++++
arch/arm64/kernel/signal.c | 52 +++++++
arch/arm64/kernel/traps.c | 12 +-
arch/arm64/kvm/hyp/include/hyp/fault.h | 5 +-
arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h | 29 ++++
arch/arm64/kvm/sys_regs.c | 8 +-
arch/arm64/mm/fault.c | 56 ++++++-
arch/arm64/mm/mmap.c | 9 ++
arch/arm64/mm/mmu.c | 40 +++++
arch/arm64/tools/cpucaps | 1 +
arch/powerpc/Kconfig | 4 +
arch/x86/Kconfig | 4 +
fs/proc/task_mmu.c | 2 +
include/linux/mm.h | 20 ++-
include/uapi/linux/elf.h | 1 +
tools/testing/selftests/arm64/abi/hwcap.c | 14 ++
.../testing/selftests/arm64/signal/.gitignore | 1 +
.../arm64/signal/testcases/poe_siginfo.c | 86 +++++++++++
.../arm64/signal/testcases/testcases.c | 27 +---
.../arm64/signal/testcases/testcases.h | 28 +++-
.../selftests/kvm/aarch64/get-reg-list.c | 14 ++
tools/testing/selftests/mm/Makefile | 2 +-
tools/testing/selftests/mm/pkey-arm64.h | 139 ++++++++++++++++++
tools/testing/selftests/mm/pkey-helpers.h | 8 +
tools/testing/selftests/mm/pkey-powerpc.h | 3 +
tools/testing/selftests/mm/pkey-x86.h | 4 +
tools/testing/selftests/mm/protection_keys.c | 109 ++++++++++++--
51 files changed, 1027 insertions(+), 66 deletions(-)
create mode 100644 arch/arm64/include/asm/pkeys.h
create mode 100644 arch/arm64/include/asm/por.h
create mode 100644 tools/testing/selftests/arm64/signal/testcases/poe_siginfo.c
create mode 100644 tools/testing/selftests/mm/pkey-arm64.h
--
2.25.1
next reply other threads:[~2024-05-03 13:01 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-03 13:01 Joey Gouly [this message]
2024-05-03 13:01 ` [PATCH v4 01/29] powerpc/mm: add ARCH_PKEY_BITS to Kconfig Joey Gouly
2024-05-06 8:57 ` Michael Ellerman
2024-05-03 13:01 ` [PATCH v4 02/29] x86/mm: " Joey Gouly
2024-05-03 16:40 ` Dave Hansen
2024-05-03 13:01 ` [PATCH v4 03/29] mm: use ARCH_PKEY_BITS to define VM_PKEY_BITN Joey Gouly
2024-05-03 16:41 ` Dave Hansen
2024-05-03 13:01 ` [PATCH v4 04/29] arm64: disable trapping of POR_EL0 to EL2 Joey Gouly
2024-05-03 13:01 ` [PATCH v4 05/29] arm64: cpufeature: add Permission Overlay Extension cpucap Joey Gouly
2024-05-03 13:01 ` [PATCH v4 06/29] arm64: context switch POR_EL0 register Joey Gouly
2024-05-03 13:01 ` [PATCH v4 07/29] KVM: arm64: Save/restore POE registers Joey Gouly
2024-05-03 13:01 ` [PATCH v4 08/29] KVM: arm64: make kvm_at() take an OP_AT_* Joey Gouly
2024-05-03 13:01 ` [PATCH v4 09/29] KVM: arm64: use `at s1e1a` for POE Joey Gouly
2024-05-03 13:01 ` [PATCH v4 10/29] arm64: enable the Permission Overlay Extension for EL0 Joey Gouly
2024-05-03 13:01 ` [PATCH v4 11/29] arm64: re-order MTE VM_ flags Joey Gouly
2024-05-03 13:01 ` [PATCH v4 12/29] arm64: add POIndex defines Joey Gouly
2024-05-03 13:01 ` [PATCH v4 13/29] arm64: convert protection key into vm_flags and pgprot values Joey Gouly
2024-05-03 13:01 ` [PATCH v4 14/29] arm64: mask out POIndex when modifying a PTE Joey Gouly
2024-05-03 13:01 ` [PATCH v4 15/29] arm64: handle PKEY/POE faults Joey Gouly
2024-05-03 13:01 ` [PATCH v4 16/29] arm64: add pte_access_permitted_no_overlay() Joey Gouly
2024-05-03 13:01 ` [PATCH v4 17/29] arm64: implement PKEYS support Joey Gouly
2024-05-03 13:01 ` [PATCH v4 18/29] arm64: add POE signal support Joey Gouly
2024-05-03 13:01 ` [PATCH v4 19/29] arm64: enable PKEY support for CPUs with S1POE Joey Gouly
2024-05-03 13:01 ` [PATCH v4 20/29] arm64: enable POE and PIE to coexist Joey Gouly
2024-05-03 13:01 ` [PATCH v4 21/29] arm64/ptrace: add support for FEAT_POE Joey Gouly
2024-05-03 13:01 ` [PATCH v4 22/29] arm64: add Permission Overlay Extension Kconfig Joey Gouly
2024-05-03 13:01 ` [PATCH v4 23/29] kselftest/arm64: move get_header() Joey Gouly
2024-05-03 13:01 ` [PATCH v4 24/29] selftests: mm: move fpregs printing Joey Gouly
2024-05-03 13:01 ` [PATCH v4 25/29] selftests: mm: make protection_keys test work on arm64 Joey Gouly
2024-05-03 13:01 ` [PATCH v4 26/29] kselftest/arm64: add HWCAP test for FEAT_S1POE Joey Gouly
2024-05-03 13:01 ` [PATCH v4 27/29] kselftest/arm64: parse POE_MAGIC in a signal frame Joey Gouly
2024-05-03 13:01 ` [PATCH v4 28/29] kselftest/arm64: Add test case for POR_EL0 signal frame records Joey Gouly
2024-05-03 13:01 ` [PATCH v4 29/29] KVM: selftests: get-reg-list: add Permission Overlay registers Joey Gouly
2024-05-05 14:41 ` [PATCH v4 00/29] arm64: Permission Overlay Extension Mark Brown
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