linux-kernel - [PATCH v1 RFC Zisslpcfi 20/20] riscv: select config for shadow stack and landing pad instr support

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Message-Id: <20230213045351.3945824-21-debug@rivosinc.com>
Date:   Sun, 12 Feb 2023 20:53:49 -0800
From:   Deepak Gupta <debug@...osinc.com>
To:     linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>
Cc:     Deepak Gupta <debug@...osinc.com>
Subject: [PATCH v1 RFC Zisslpcfi 20/20] riscv: select config for shadow stack and landing pad instr support

This patch selects config shadow stack support and landing pad instr
support. Since shadow stack support and landing instr support relies
on ELF header, this change also selects ARCH_USE_GNU_PROPERTY and
ARCH_BINFMT_ELF_STATE.

Signed-off-by: Deepak Gupta <debug@...osinc.com>
---
 arch/riscv/Kconfig | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index e2b656043abf..9a39ada1d9d0 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -132,6 +132,10 @@ config RISCV
 	select SYSCTL_EXCEPTION_TRACE
 	select THREAD_INFO_IN_TASK
 	select TRACE_IRQFLAGS_SUPPORT
+	select USER_SHADOW_STACK
+	select USER_INDIRECT_BR_LP
+	select ARCH_USE_GNU_PROPERTY
+	select ARCH_BINFMT_ELF_STATE
 	select UACCESS_MEMCPY if !MMU
 	select ZONE_DMA32 if 64BIT
 	select HAVE_DYNAMIC_FTRACE if !XIP_KERNEL && MMU && $(cc-option,-fpatchable-function-entry=8)
-- 
2.25.1