riscv: Implement indirect branch tracking prctls

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This patch adds a RISC-V implementation of the following prctls:
PR_SET_INDIR_BR_LP_STATUS, PR_GET_INDIR_BR_LP_STATUS and
PR_LOCK_INDIR_BR_LP_STATUS.

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>
Tested-by: Valentin Haudiquet <valentin.haudiquet@canonical.com>
Link: https://patch.msgid.link/20251112-v5_user_cfi_series-v23-14-b55691eacf4f@rivosinc.com
[pjw@kernel.org: clean up patch description]
Signed-off-by: Paul Walmsley <pjw@kernel.org>

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This commit is contained in:

Deepak Gupta 2026-01-25 21:09:54 -07:00 • committed by Paul Walmsley

parent 5ca243f6e3

commit 8a9e22d2ca

4 changed files with 102 additions and 0 deletions

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14

arch/riscv/include/asm/usercfi.h

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4

arch/riscv/kernel/entry.S

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5

arch/riscv/kernel/process.c

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79

arch/riscv/kernel/usercfi.c

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