linux-kernel - [PATCH v2 19/27] riscv/kernel: update __show

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Message-Id: <20240329044459.3990638-20-debug@rivosinc.com>
Date: Thu, 28 Mar 2024 21:44:51 -0700
From: Deepak Gupta <debug@...osinc.com>
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Subject: [PATCH v2 19/27] riscv/kernel: update __show_regs to print shadow stack register

Updating __show_regs to print captured shadow stack pointer as well.
On tasks where shadow stack is disabled, it'll simply print 0.

Signed-off-by: Deepak Gupta <debug@...osinc.com>
---
 arch/riscv/kernel/process.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/riscv/kernel/process.c b/arch/riscv/kernel/process.c
index 105ceb8880c1..97c812753c9c 100644
--- a/arch/riscv/kernel/process.c
+++ b/arch/riscv/kernel/process.c
@@ -89,8 +89,8 @@ void __show_regs(struct pt_regs *regs)
 		regs->s8, regs->s9, regs->s10);
 	pr_cont(" s11: " REG_FMT " t3 : " REG_FMT " t4 : " REG_FMT "\n",
 		regs->s11, regs->t3, regs->t4);
-	pr_cont(" t5 : " REG_FMT " t6 : " REG_FMT "\n",
-		regs->t5, regs->t6);
+	pr_cont(" t5 : " REG_FMT " t6 : " REG_FMT " ssp : " REG_FMT "\n",
+		regs->t5, regs->t6, get_active_shstk(current));
 
 	pr_cont("status: " REG_FMT " badaddr: " REG_FMT " cause: " REG_FMT "\n",
 		regs->status, regs->badaddr, regs->cause);
-- 
2.43.2