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Date: Sun, 14 Aug 2022 15:12:38 +0100 From: Conor Dooley <mail@...chuod.ie> To: Anup Patel <anup@...infault.org>, Atish Patra <atishp@...shpatra.org>, Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu> Cc: Conor Dooley <conor.dooley@...rochip.com>, Guo Ren <guoren@...nel.org>, Vincent Chen <vincent.chen@...ive.com>, Xianting Tian <xianting.tian@...ux.alibaba.com>, Heiko Stuebner <heiko@...ech.de>, Kefeng Wang <wangkefeng.wang@...wei.com>, Tong Tiangen <tongtiangen@...wei.com>, kvm@...r.kernel.org, kvm-riscv@...ts.infradead.org, linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org Subject: [PATCH 4/4] riscv: traps: add missing prototype From: Conor Dooley <conor.dooley@...rochip.com> Sparse complains: arch/riscv/kernel/traps.c:213:6: warning: symbol 'shadow_stack' was not declared. Should it be static? The variable is used in entry.S, so declare shadow_stack there alongside SHADOW_OVERFLOW_STACK_SIZE. Fixes: 31da94c25aea ("riscv: add VMAP_STACK overflow detection") Signed-off-by: Conor Dooley <conor.dooley@...rochip.com> --- arch/riscv/include/asm/thread_info.h | 2 ++ arch/riscv/kernel/traps.c | 3 ++- 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/riscv/include/asm/thread_info.h b/arch/riscv/include/asm/thread_info.h index 78933ac04995..67322f878e0d 100644 --- a/arch/riscv/include/asm/thread_info.h +++ b/arch/riscv/include/asm/thread_info.h @@ -42,6 +42,8 @@ #ifndef __ASSEMBLY__ +extern long shadow_stack[SHADOW_OVERFLOW_STACK_SIZE / sizeof(long)]; + #include <asm/processor.h> #include <asm/csr.h> diff --git a/arch/riscv/kernel/traps.c b/arch/riscv/kernel/traps.c index 39d0f8bba4b4..635e6ec26938 100644 --- a/arch/riscv/kernel/traps.c +++ b/arch/riscv/kernel/traps.c @@ -20,9 +20,10 @@ #include <asm/asm-prototypes.h> #include <asm/bug.h> +#include <asm/csr.h> #include <asm/processor.h> #include <asm/ptrace.h> -#include <asm/csr.h> +#include <asm/thread_info.h> int show_unhandled_signals = 1; -- 2.37.1
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