From: Linus Walleij <linus.walleij@linaro.org>
To: Russell King <linux@armlinux.org.uk>,
Sami Tolvanen <samitolvanen@google.com>,
Kees Cook <keescook@chromium.org>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Ard Biesheuvel <ardb@kernel.org>, Arnd Bergmann <arnd@arndb.de>
Cc: linux-arm-kernel@lists.infradead.org, llvm@lists.linux.dev,
Linus Walleij <linus.walleij@linaro.org>
Subject: [PATCH v3 8/9] ARM: ftrace: Define ftrace_stub_graph
Date: Mon, 11 Mar 2024 10:15:45 +0100 [thread overview]
Message-ID: <20240311-arm32-cfi-v3-8-224a0f0a45c2@linaro.org> (raw)
In-Reply-To: <20240311-arm32-cfi-v3-0-224a0f0a45c2@linaro.org>
Several architectures defines this stub for the graph tracer,
and it is needed for CFI, as it needs a separate symbol for it.
The trick from include/asm-generic/vmlinux.lds.h to define
ftrace_stub_graph to ftrace_stub isn't working when using CFI.
Commit 883bbbffa5a4 contains the details.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
arch/arm/kernel/entry-ftrace.S | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm/kernel/entry-ftrace.S b/arch/arm/kernel/entry-ftrace.S
index 3e7bcaca5e07..bc598e3d8dd2 100644
--- a/arch/arm/kernel/entry-ftrace.S
+++ b/arch/arm/kernel/entry-ftrace.S
@@ -271,6 +271,10 @@ ENTRY(ftrace_stub)
ret lr
ENDPROC(ftrace_stub)
+ENTRY(ftrace_stub_graph)
+ ret lr
+ENDPROC(ftrace_stub_graph)
+
#ifdef CONFIG_DYNAMIC_FTRACE
__INIT
--
2.34.1
next prev parent reply other threads:[~2024-03-11 9:15 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-11 9:15 [PATCH v3 0/9] CFI for ARM32 using LLVM Linus Walleij
2024-03-11 9:15 ` [PATCH v3 1/9] ARM: Support CLANG CFI Linus Walleij
2024-03-11 10:24 ` Ard Biesheuvel
2024-03-11 9:15 ` [PATCH v3 2/9] ARM: tlbflush: Make TLB flushes into static inlines Linus Walleij
2024-03-11 9:39 ` Russell King (Oracle)
2024-03-11 10:03 ` Ard Biesheuvel
2024-03-11 15:34 ` Sami Tolvanen
2024-03-11 19:50 ` Linus Walleij
2024-03-11 21:36 ` Sami Tolvanen
2024-03-11 22:17 ` Linus Walleij
2024-03-11 22:28 ` Sami Tolvanen
2024-03-11 23:56 ` Linus Walleij
2024-03-12 7:24 ` Ard Biesheuvel
2024-03-12 8:14 ` Linus Walleij
2024-03-11 9:15 ` [PATCH v3 3/9] ARM: bugs: Check in the vtable instead of defined aliases Linus Walleij
2024-03-11 9:15 ` [PATCH v3 4/9] ARM: proc: Use inlines instead of defines Linus Walleij
2024-03-11 9:15 ` [PATCH v3 5/9] ARM: delay: Turn delay functions into static inlines Linus Walleij
2024-03-11 12:26 ` Ard Biesheuvel
2024-03-11 9:15 ` [PATCH v3 6/9] ARM: turn CPU cache flush " Linus Walleij
2024-03-11 9:15 ` [PATCH v3 7/9] ARM: page: Turn highpage accesses " Linus Walleij
2024-03-11 12:15 ` Ard Biesheuvel
2024-03-28 8:18 ` Linus Walleij
2024-03-11 9:15 ` Linus Walleij [this message]
2024-03-11 9:15 ` [PATCH v3 9/9] ARM: KCFI: Allow permissive CFI mode Linus Walleij
2024-03-11 22:03 ` Kees Cook
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