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| author | Deepak Gupta <debug@rivosinc.com> | 2026-01-25 21:09:56 -0700 |
|---|---|---|
| committer | Paul Walmsley <pjw@kernel.org> | 2026-01-29 02:38:40 -0700 |
| commit | 22c1e263af2ac7dad3d2af258336318ee4c4a0ae (patch) | |
| tree | bdae1dbe808a6a4c4b1ffd25feaf549ff2755765 /kernel | |
| parent | ccad8c1336b6511e3c7ca5c02f797b1fd2cf67e1 (diff) | |
riscv: create a Kconfig fragment for shadow stack and landing pad support
This patch creates a Kconfig fragment for shadow stack support and
landing pad instruction support. Shadow stack support and landing pad
instruction support can be enabled by selecting
'CONFIG_RISCV_USER_CFI'. Selecting 'CONFIG_RISCV_USER_CFI' wires up
the path to enumerate CPU support. If support exists, the kernel will
support CPU-assisted user mode CFI.
If CONFIG_RISCV_USER_CFI is selected, select 'ARCH_USES_HIGH_VMA_FLAGS',
'ARCH_HAS_USER_SHADOW_STACK' and 'DYNAMIC_SIGFRAME' for riscv.
Reviewed-by: Zong Li <zong.li@sifive.com>
Signed-off-by: Deepak Gupta <debug@rivosinc.com>
Tested-by: Andreas Korb <andreas.korb@aisec.fraunhofer.de> # QEMU, custom CVA6
Tested-by: Valentin Haudiquet <valentin.haudiquet@canonical.com>
Link: https://patch.msgid.link/20251112-v5_user_cfi_series-v23-25-b55691eacf4f@rivosinc.com
[pjw@kernel.org: cleaned up patch description, Kconfig text; added CONFIG_MMU exclusion]
Signed-off-by: Paul Walmsley <pjw@kernel.org>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions