linux-kernel - Re: [PATCH 1/2] arm: fixmap: implement __set

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Message-ID: <CAD=FV=UuYpc-kFMymy7P_mL+iYziKqJii8=32P6kMELDFnC1pQ@mail.gmail.com>
Date:	Thu, 24 Apr 2014 17:52:51 -0700
From:	Doug Anderson <dianders@...omium.org>
To:	Rabin Vincent <rabin@....in>
Cc:	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Kees Cook <keescook@...omium.org>,
	Laura Abbott <lauraa@...eaurora.org>,
	Jon Medhurst <tixy@...aro.org>
Subject: Re: [PATCH 1/2] arm: fixmap: implement __set_fixmap()

Rabin,

On Fri, Apr 4, 2014 at 2:27 PM, Rabin Vincent <rabin@....in> wrote:
> This is used from set_fixmap() and clear_fixmap() via
> asm-generic/fixmap.h.
>
> Signed-off-by: Rabin Vincent <rabin@....in>
> ---
> Needs "arm: use generic fixmap.h", available in linux-next.
>
>  arch/arm/include/asm/fixmap.h | 2 ++
>  arch/arm/mm/mmu.c             | 7 +++++++
>  2 files changed, 9 insertions(+)
>
> diff --git a/arch/arm/include/asm/fixmap.h b/arch/arm/include/asm/fixmap.h
> index 68ea615..55ed076 100644
> --- a/arch/arm/include/asm/fixmap.h
> +++ b/arch/arm/include/asm/fixmap.h
> @@ -23,6 +23,8 @@ enum fixed_addresses {
>         __end_of_fixed_addresses
>  };
>
> +void __set_fixmap(enum fixed_addresses idx, unsigned long phys, pgprot_t prot);

nit: I think you should use phys_addr_t for the physical address, right?

void __set_fixmap(enum fixed_addresses idx, phys_addr_t phys, pgprot_t prot);


...I'm no expert at fixmap, but otherwise this looks pretty reasonable to me.

-Doug
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