linux-kernel - Re: [PATCH 13/27] m68k: Use common bits from generic tlb.h

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Date:	Wed, 14 May 2014 21:19:39 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Richard Weinberger <richard@....at>
Cc:	Linux-Arch <linux-arch@...r.kernel.org>,
	Arnd Bergmann <arnd@...db.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-m68k <linux-m68k@...ts.linux-m68k.org>
Subject: Re: [PATCH 13/27] m68k: Use common bits from generic tlb.h

On Wed, May 14, 2014 at 8:59 PM, Richard Weinberger <richard@....at> wrote:
> --- a/arch/m68k/include/asm/tlb.h
> +++ b/arch/m68k/include/asm/tlb.h
> @@ -1,19 +1,11 @@
>  #ifndef _M68K_TLB_H
>  #define _M68K_TLB_H
>
> -/*
> - * m68k doesn't need any special per-pte or
> - * per-vma handling..
> - */
> -#define tlb_start_vma(tlb, vma)        do { } while (0)
> -#define tlb_end_vma(tlb, vma)  do { } while (0)
> -#define __tlb_remove_tlb_entry(tlb, ptep, address)     do { } while (0)
> -
> -/*
> - * .. because we flush the whole mm when it
> - * fills up.
> - */
> -#define tlb_flush(tlb)         flush_tlb_mm((tlb)->mm)
> +#ifdef CONFIG_MMU && !defined(CONFIG_COLDFIRE) && !defined(CONFIG_SUN3)

Syntax error:

#if defined(CONFIG_MMU) && ...

But why this sudden #ifdef checks?

> +/* These defines are needed to override the defaults from asm-generic/tlb.h */
> +#define __pte_free_tlb __pte_free_tlb
> +#define __pmd_free_tlb __pmd_free_tlb
> +#endif

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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