Re: [PATCH] x86/boot/compressed/64: Remove unused variable

[Zhenzhong Duan]

On 2019/7/17 22:34, Kirill A. Shutemov wrote:
> On Tue, Jul 16, 2019 at 01:17:20PM +0000, Zhenzhong Duan wrote:
> > Fix gcc warning:
> >
> > arch/x86/boot/compressed/pgtable_64.c: In function 'find_trampoline_placement':
> > arch/x86/boot/compressed/pgtable_64.c:43:16: warning: unused variable 'trampoline_start' [-Wunused-variable]
> >    unsigned long trampoline_start;
> >                  ^
> >
> > Signed-off-by: Zhenzhong Duan <zhenzhong.duan@xxxxxxxxxx>
> > Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
> > Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> > Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> > Cc: Ingo Molnar <mingo@xxxxxxxxxx>
> > Cc: Borislav Petkov <bp@xxxxxxxxx>
> Acked-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
>
> Have no idea why I don't see the warning in my setup.

Try below:

make bzImage EXTRA_CFLAGS="-Wunused-variable"

Zhenzhong