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From: Nathan Chancellor <nathan@kernel.org>
To: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
	 dave.hansen@linux.intel.com
Cc: x86@kernel.org, hpa@zytor.com, ndesaulniers@google.com,
	 morbo@google.com, justinstitt@google.com, song@kernel.org,
	 ribalda@chromium.org, linux-kernel@vger.kernel.org,
	llvm@lists.linux.dev,  patches@lists.linux.dev,
	Nathan Chancellor <nathan@kernel.org>
Subject: [PATCH 2/2] x86/purgatory: Enable orphan section warnings
Date: Wed, 17 Apr 2024 14:53:46 -0700	[thread overview]
Message-ID: <20240417-x86-fix-kexec-with-llvm-18-v1-2-5383121e8fb7@kernel.org> (raw)
In-Reply-To: <20240417-x86-fix-kexec-with-llvm-18-v1-0-5383121e8fb7@kernel.org>

Now that the purgatory has a linker script that explicitly describes all
of its sections, turn on orphan section warnings for it so that new
sections do not appear without notice.

Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
 arch/x86/purgatory/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile
index dfc030a4cca9..a6c8239abcba 100644
--- a/arch/x86/purgatory/Makefile
+++ b/arch/x86/purgatory/Makefile
@@ -17,7 +17,7 @@ CFLAGS_sha256.o := -D__DISABLE_EXPORTS -D__NO_FORTIFY
 # When linking purgatory.ro with -r unresolved symbols are not checked,
 # also link a purgatory.chk binary without -r to check for unresolved symbols.
 PURGATORY_LDFLAGS := -z nodefaultlib
-LDFLAGS_purgatory.ro := -r $(PURGATORY_LDFLAGS) -T
+LDFLAGS_purgatory.ro := --orphan-handling=$(CONFIG_LD_ORPHAN_WARN_LEVEL) -r $(PURGATORY_LDFLAGS) -T
 LDFLAGS_purgatory.chk := -e purgatory_start $(PURGATORY_LDFLAGS)
 targets += purgatory.ro purgatory.chk
 

-- 
2.44.0


  parent reply	other threads:[~2024-04-17 21:54 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-04-17 21:53 [PATCH 0/2] x86/purgatory: Avoid kexec runtime warning with LLVM 18 Nathan Chancellor
2024-04-17 21:53 ` [PATCH 1/2] x86/purgatory: Add a linker script Nathan Chancellor
2024-04-17 21:53 ` Nathan Chancellor [this message]
2024-04-18 11:14 ` [PATCH 0/2] x86/purgatory: Avoid kexec runtime warning with LLVM 18 Borislav Petkov
2024-04-18 15:15   ` Nathan Chancellor
2024-04-18 15:44   ` Nick Desaulniers
2024-04-18 15:59     ` Ard Biesheuvel
2024-04-18 17:52       ` Ard Biesheuvel

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