linux-kernel - Re: [tip: x86/boot] x86/boot: Move the EFI mixed mode startup code back under arch/x86, into startup/

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Message-ID: <Z_ZhTJaxcXubOATD@gmail.com>
Date: Wed, 9 Apr 2025 14:00:12 +0200
From: Ingo Molnar <mingo@...nel.org>
To: "Aithal, Srikanth" <sraithal@....com>
Cc: Ard Biesheuvel <ardb@...nel.org>, linux-kernel@...r.kernel.org,
	David Woodhouse <dwmw@...zon.co.uk>,
	"H. Peter Anvin" <hpa@...or.com>, Kees Cook <keescook@...omium.org>,
	x86@...nel.org
Subject: Re: [tip: x86/boot] x86/boot: Move the EFI mixed mode startup code
 back under arch/x86, into startup/


* Aithal, Srikanth <sraithal@....com> wrote:

> 
> 
> On 4/7/2025 3:11 PM, Aithal, Srikanth wrote:
> > On 4/7/2025 2:00 PM, Ard Biesheuvel wrote:
> > > On Mon, 7 Apr 2025 at 10:38, Aithal, Srikanth <sraithal@....com> wrote:
> > > > 
> > > > Hello,
> > > > 
> > > > This commit breaks the build of next-20250407. The kernel config is
> > > > attached here.
> > > > 
> > > > Build error:
> > > > 
> > > > arch/x86/boot/startup/efi-mixed.o: warning: objtool:
> > > > efi32_stub_entry+0x0: unannotated intra-function call
> > > > make[3]: *** [scripts/Makefile.build:335:
> > > > arch/x86/boot/startup/efi-mixed.o] Error 255
> > > > make[3]: *** Deleting file 'arch/x86/boot/startup/efi-mixed.o'
> > > > make[3]: *** Waiting for unfinished jobs....
> > > > make[2]: *** [scripts/Makefile.build:461: arch/x86/boot/startup] Error 2
> > > > make[2]: *** Waiting for unfinished jobs....
> > > > make[1]: *** [/home/VT_BUILD/linux/Makefile:2006: .] Error 2
> > > > make: *** [Makefile:248: __sub-make] Error 2
> > > > 
> > > > 
> > > 
> > > Apologies for the breakage.
> > > 
> > > Does it help to add the following to arch/x86/boot/startup/Makefile:
> > > 
> > > OBJECT_FILES_NON_STANDARD := y
> > > 
> > > ?
> 
> 
> 
> If the above is the solution, could you please let me know how soon it might
> be included in the linux-next build?

Tomorrow's -next should have this all sorted out.

Thanks,

	Ingo