RISC-V: KVM: Add support for control-flow integrity FWFT features

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Control-flow integrity is controlled through a WARL field in henvcfg.
Expose the feature only if the Zicfilp/Zicfiss is supported for VS-mode.
Allow the VMM to block access to the feature by disabling the ISA
extension in the guest.

Assisted-by: YuanSheng:claude-4.7-opus
Co-developed-by: Quan Zhou <zhouquan@iscas.ac.cn>
Signed-off-by: Quan Zhou <zhouquan@iscas.ac.cn>
Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
Link: https://lore.kernel.org/r/20260713010302.303278-8-inochiama@gmail.com
Signed-off-by: Anup Patel <anup@brainfault.org>

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Inochi Amaoto 2026-07-13 09:03:00 +08:00 • committed by Anup Patel

parent 864260d71d

commit e16d1ea6ae

2 changed files with 107 additions and 0 deletions

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arch/riscv/include/uapi/asm/kvm.h

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105

arch/riscv/kvm/vcpu_sbi_fwft.c

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