linux-kernel - [PATCH v14 7/7] arm64: Select HAVE_RELIABLE

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Date:   Wed, 13 Apr 2022 09:05:28 -0500
From:   madvenka@...ux.microsoft.com
To:     mark.rutland@....com, broonie@...nel.org, jpoimboe@...hat.com,
        ardb@...nel.org, nobuta.keiya@...itsu.com,
        sjitindarsingh@...il.com, catalin.marinas@....com, will@...nel.org,
        jmorris@...ei.org, linux-arm-kernel@...ts.infradead.org,
        live-patching@...r.kernel.org, linux-kernel@...r.kernel.org,
        madvenka@...ux.microsoft.com
Subject: [PATCH v14 7/7] arm64: Select HAVE_RELIABLE_STACKTRACE

From: "Madhavan T. Venkataraman" <madvenka@...ux.microsoft.com>

Select HAVE_RELIABLE_STACKTRACE in arm64/Kconfig to allow
arch_stack_walk_reliable() to be used.

Note that this is conditional upon STACK_VALIDATION which will be added
when frame pointer validation is implemented (say via objtool).

Signed-off-by: Madhavan T. Venkataraman <madvenka@...ux.microsoft.com>
---
 arch/arm64/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 57c4c995965f..f7b9d0fecf95 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -225,6 +225,7 @@ config ARM64
 	select THREAD_INFO_IN_TASK
 	select HAVE_ARCH_USERFAULTFD_MINOR if USERFAULTFD
 	select TRACE_IRQFLAGS_SUPPORT
+	select HAVE_RELIABLE_STACKTRACE if FRAME_POINTER && STACK_VALIDATION
 	help
 	  ARM 64-bit (AArch64) Linux support.
 
-- 
2.25.1