linux-kernel - Re: [PATCH] x86: Fix build regression with CONFIG_KEXEC

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Message-ID: <20241209102929.GBZ1bGiT-DGK8uDdo4@fat_crate.local>
Date: Mon, 9 Dec 2024 11:29:29 +0100
From: Borislav Petkov <bp@...en8.de>
To: Damien Le Moal <dlemoal@...nel.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
	David Woodhouse <dwmw@...zon.co.uk>, Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: Fix build regression with CONFIG_KEXEC_JUMP enabled

On Mon, Dec 09, 2024 at 08:53:32AM +0900, Damien Le Moal wrote:
> Build 6.13-rc12 for x86_64 with gcc 14.2.1 fails with the error:
> 
> ld: vmlinux.o: in function `virtual_mapped':
> linux/arch/x86/kernel/relocate_kernel_64.S:249:(.text+0x5915b): undefined reference to `saved_context_gdt_desc'
> 
> when CONFIG_KEXEC_JUMP is enabled.

Hmm, how do you trigger this? Care to share your .config?

Because I can't trigger it with my gcc13 and CONFIG_KEXEC_JUMP=y

It would be good to know how the 0day bot didn't catch it either...

Thx.

-- 
Regards/Gruss,
    Boris.

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