linux-kernel - Re: [PATCH] x86/microcode: make stub function static inline

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Date:   Thu, 12 Dec 2019 09:58:09 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Valdis Klētnieks <valdis.kletnieks@...edu>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86/microcode: make stub function static inline

On Wed, Dec 11, 2019 at 06:33:53PM -0500, Valdis Klētnieks wrote:
> Were you building with W=1 (so gcc issues extra warnings) and C=1 or 2
> so sparse is run?

[boris@zn: ~/kernel/linux> make W=1 C=1 arch/x86/kernel/cpu/microcode/
...

  LINK     /mnt/kernel/kernel/linux/tools/objtool/objtool
  CHECK   arch/x86/kernel/cpu/microcode/core.c
  CC      arch/x86/kernel/cpu/microcode/core.o
  CHECK   arch/x86/kernel/cpu/microcode/intel.c
  CC      arch/x86/kernel/cpu/microcode/intel.o
  CHECK   arch/x86/kernel/cpu/microcode/amd.c
arch/x86/kernel/cpu/microcode/amd.c:421:35: warning: Using plain integer as NULL pointer
arch/x86/kernel/cpu/microcode/amd.c:546:35: warning: Using plain integer as NULL pointer
  CC      arch/x86/kernel/cpu/microcode/amd.o
  AR      arch/x86/kernel/cpu/microcode/built-in.a

[boris@zn: ~/kernel/linux> git clean -dqfx

...

[boris@zn: ~/kernel/linux> make W=1 C=2 arch/x86/kernel/cpu/microcode/

  LINK     /mnt/kernel/kernel/linux/tools/objtool/objtool
  CHECK   arch/x86/kernel/cpu/microcode/core.c
  CC      arch/x86/kernel/cpu/microcode/core.o
  CHECK   arch/x86/kernel/cpu/microcode/intel.c
  CC      arch/x86/kernel/cpu/microcode/intel.o
  CHECK   arch/x86/kernel/cpu/microcode/amd.c
arch/x86/kernel/cpu/microcode/amd.c:421:35: warning: Using plain integer as NULL pointer
arch/x86/kernel/cpu/microcode/amd.c:546:35: warning: Using plain integer as NULL pointer
  CC      arch/x86/kernel/cpu/microcode/amd.o
  AR      arch/x86/kernel/cpu/microcode/built-in.a


-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette