From: Jonathan Cameron <Jonathan.Cameron@Huawei.com>
To: Mark Brown <broonie@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Jonathan Corbet <corbet@lwn.net>,
Andrew Morton <akpm@linux-foundation.org>,
Marc Zyngier <maz@kernel.org>,
Oliver Upton <oliver.upton@linux.dev>,
James Morse <james.morse@arm.com>,
"Suzuki K Poulose" <suzuki.poulose@arm.com>,
Arnd Bergmann <arnd@arndb.de>, "Oleg Nesterov" <oleg@redhat.com>,
Eric Biederman <ebiederm@xmission.com>,
"Kees Cook" <keescook@chromium.org>,
Shuah Khan <shuah@kernel.org>,
"Rick P. Edgecombe" <rick.p.edgecombe@intel.com>,
Deepak Gupta <debug@rivosinc.com>,
Ard Biesheuvel <ardb@kernel.org>,
Szabolcs Nagy <Szabolcs.Nagy@arm.com>,
"H.J. Lu" <hjl.tools@gmail.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
<linux-arm-kernel@lists.infradead.org>,
<linux-doc@vger.kernel.org>, <kvmarm@lists.linux.dev>,
<linux-fsdevel@vger.kernel.org>, <linux-arch@vger.kernel.org>,
<linux-mm@kvack.org>, <linux-kselftest@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <linux-riscv@lists.infradead.org>
Subject: Re: [PATCH 26/35] arm64: Add Kconfig for Guarded Control Stack (GCS)
Date: Mon, 17 Jul 2023 13:32:25 +0100 [thread overview]
Message-ID: <20230717133225.00000ce7@Huawei.com> (raw)
In-Reply-To: <20230716-arm64-gcs-v1-26-bf567f93bba6@kernel.org>
On Sun, 16 Jul 2023 22:51:22 +0100
Mark Brown <broonie@kernel.org> wrote:
> Provide a Kconfig option allowing the user to select if GCS support is
> built into the kernel.
>
> Signed-off-by: Mark Brown <broonie@kernel.org>
> ---
> arch/arm64/Kconfig | 19 +++++++++++++++++++
> 1 file changed, 19 insertions(+)
>
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index 7856c3a3e35a..e1aeeda13c52 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -2091,6 +2091,25 @@ config ARM64_EPAN
> if the cpu does not implement the feature.
> endmenu # "ARMv8.7 architectural features"
>
> +menu "v9.4 architectural features"
> +
> +config ARM64_GCS
> + bool "Enable support for Guarded Control Stack (GCS)"
> + default y
> + select ARCH_USES_HIGH_VMA_FLAGS
> + help
> + Guarded Control Stack (GCS) provides support for a separate
> + stack with restricted access which contains only return
> + addresses. This can be used to harden against some attacks
> + by comparing return address used by the program with what is
> + stored in the GCS, and may also be used to efficiently obtain
> + the call stack for applications such as profiling.
> +
> + The feature is detected at runtime, and will remain disabled
> + if the system does not implement the feature.
> +
> +endmenu # "2022 archiectural features"
Inconsistent naming and spelling mistake.
> +
> config ARM64_SVE
> bool "ARM Scalable Vector Extension support"
> default y
>
next prev parent reply other threads:[~2023-07-17 12:32 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-16 21:50 [PATCH 00/35] arm64/gcs: Provide support for GCS at EL0 Mark Brown
2023-07-16 21:50 ` [PATCH 01/35] prctl: arch-agnostic prctl for shadow stack Mark Brown
2023-07-18 17:45 ` Edgecombe, Rick P
2023-07-18 18:54 ` Mark Brown
2023-07-16 21:50 ` [PATCH 02/35] prctl: Add flag for shadow stack writeability and push/pop Mark Brown
2023-07-18 17:47 ` Edgecombe, Rick P
2023-07-18 19:10 ` Mark Brown
2023-07-16 21:50 ` [PATCH 03/35] arm64: Document boot requirements for Guarded Control Stacks Mark Brown
2023-07-16 21:51 ` [PATCH 04/35] arm64/gcs: Document the ABI " Mark Brown
2023-07-17 11:42 ` Jonathan Cameron
2023-07-19 11:44 ` Mike Rapoport
2023-07-19 13:25 ` Mark Brown
2023-07-19 14:04 ` Mike Rapoport
2023-07-16 21:51 ` [PATCH 05/35] arm64/sysreg: Add new system registers for GCS Mark Brown
2023-07-16 21:51 ` [PATCH 06/35] arm64/sysreg: Add definitions for architected GCS caps Mark Brown
2023-07-16 21:51 ` [PATCH 07/35] arm64/gcs: Add manual encodings of GCS instructions Mark Brown
2023-07-16 21:51 ` [PATCH 08/35] arm64/gcs: Provide copy_to_user_gcs() Mark Brown
2023-07-16 21:51 ` [PATCH 09/35] arm64/cpufeature: Runtime detection of Guarded Control Stack (GCS) Mark Brown
2023-07-16 21:51 ` [PATCH 10/35] arm64/mm: Allocate PIE slots for EL0 guarded control stack Mark Brown
2023-07-16 21:51 ` [PATCH 11/35] mm: Define VM_SHADOW_STACK for arm64 when we support GCS Mark Brown
2023-07-16 21:51 ` [PATCH 12/35] arm64/mm: Map pages for guarded control stack Mark Brown
2023-07-16 21:51 ` [PATCH 13/35] KVM: arm64: Manage GCS registers for guests Mark Brown
2023-07-16 21:51 ` [PATCH 14/35] arm64: Disable traps for GCS usage at EL0 and EL1 Mark Brown
2023-07-16 21:51 ` [PATCH 15/35] arm64/idreg: Add overrride for GCS Mark Brown
2023-07-16 21:51 ` [PATCH 16/35] arm64/hwcap: Add hwcap " Mark Brown
2023-07-16 21:51 ` [PATCH 17/35] arm64/traps: Handle GCS exceptions Mark Brown
2023-07-17 12:12 ` Jonathan Cameron
2023-07-16 21:51 ` [PATCH 18/35] arm64/mm: Handle GCS data aborts Mark Brown
2023-07-16 21:51 ` [PATCH 19/35] arm64/gcs: Context switch GCS registers for EL0 Mark Brown
2023-07-16 21:51 ` [PATCH 20/35] arm64/gcs: Allocate a new GCS for threads with GCS enabled Mark Brown
2023-07-16 21:51 ` [PATCH 21/35] arm64/gcs: Implement shadow stack prctl() interface Mark Brown
2023-07-18 17:51 ` Edgecombe, Rick P
2023-07-18 19:37 ` Mark Brown
2023-07-16 21:51 ` [PATCH 22/35] arm64/mm: Implement map_shadow_stack() Mark Brown
2023-07-18 9:10 ` Szabolcs Nagy
2023-07-18 13:55 ` Mark Brown
2023-07-18 15:49 ` Edgecombe, Rick P
2023-07-16 21:51 ` [PATCH 23/35] arm64/signal: Set up and restore the GCS context for signal handlers Mark Brown
2023-07-16 21:51 ` [PATCH 24/35] arm64/signal: Expose GCS state in signal frames Mark Brown
2023-07-16 21:51 ` [PATCH 25/35] arm64/ptrace: Expose GCS via ptrace and core files Mark Brown
2023-07-16 21:51 ` [PATCH 26/35] arm64: Add Kconfig for Guarded Control Stack (GCS) Mark Brown
2023-07-17 12:32 ` Jonathan Cameron [this message]
2023-07-16 21:51 ` [PATCH 27/35] kselftest/arm64: Verify the GCS hwcap Mark Brown
2023-07-16 21:51 ` [PATCH 28/35] kselftest/arm64: Add GCS as a detected feature in the signal tests Mark Brown
2023-07-16 21:51 ` [PATCH 29/35] kselftest/arm64: Add framework support for GCS to signal handling tests Mark Brown
2023-07-16 21:51 ` [PATCH 30/35] kselftest/arm64: Allow signals tests to specify an expected si_code Mark Brown
2023-07-16 21:51 ` [PATCH 31/35] kselftest/arm64: Always run signals tests with GCS enabled Mark Brown
2023-07-16 21:51 ` [PATCH 32/35] kselftest/arm64: Add very basic GCS test program Mark Brown
2023-07-16 21:51 ` [PATCH 33/35] kselftest/arm64: Add a GCS test program built with the system libc Mark Brown
2023-07-16 21:51 ` [PATCH 34/35] selftests/arm64: Add GCS signal tests Mark Brown
2023-07-16 21:51 ` [PATCH 35/35] kselftest/arm64: Enable GCS for the FP stress tests Mark Brown
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