linux-kernel - [PATCH] x86: tinyconfig: fix warning for 'make ARCH=x86

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Date: Thu, 21 Mar 2024 00:43:12 +0900
From: Masahiro Yamada <masahiroy@...nel.org>
To: x86@...nel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>
Cc: linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	"H . Peter Anvin" <hpa@...or.com>,
	Josh Poimboeuf <jpoimboe@...nel.org>,
	Masahiro Yamada <masahiroy@...nel.org>
Subject: [PATCH] x86: tinyconfig: fix warning for 'make ARCH=x86_64 tinyconfig'

Kconfig emits a warning for the following command:

  $ make ARCH=x86_64 tinyconfig
    [ snip ]
  .config:1380:warning: override: UNWINDER_GUESS changes choice state

When X86_64=y, the unwinder is exclusively selected from the following
three options:

 - UNWINDER_ORC
 - UNWINDER_FRAME_POINTER
 - UNWINDER_GUESS

However, arch/x86/configs/tiny.config only specifies the values of the
last two. UNWINDER_ORC must be explicitly disabled.

Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---

 arch/x86/configs/tiny.config | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/configs/tiny.config b/arch/x86/configs/tiny.config
index 66c9e2aab16c..be3ee4294903 100644
--- a/arch/x86/configs/tiny.config
+++ b/arch/x86/configs/tiny.config
@@ -1,5 +1,6 @@
 CONFIG_NOHIGHMEM=y
 # CONFIG_HIGHMEM4G is not set
 # CONFIG_HIGHMEM64G is not set
+# CONFIG_UNWINDER_ORC is not set
 CONFIG_UNWINDER_GUESS=y
 # CONFIG_UNWINDER_FRAME_POINTER is not set
-- 
2.40.1