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Re: [RFC V2] arm64:use set_fixmap_offset to make it more clear

From yalin wang <yalin.wang2010@gmail.com>
Newsgroups linux.kernel
Subject Re: [RFC V2] arm64:use set_fixmap_offset to make it more clear
Date 2015-07-28 08:40 +0200
Message-ID <pR6Iq-1bm-11@gated-at.bofh.it> (permalink)
References <pPnaF-5BV-7@gated-at.bofh.it> <pPJNV-4T4-7@gated-at.bofh.it>
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> On Jul 24, 2015, at 19:52, yalin wang <yalin.wang2010@gmail.com> wrote:
> 
> A little change to patch_map() function,
> use set_fixmap_offset() to make code more clear.
> 
> Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
> ---
> arch/arm64/kernel/insn.c | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm64/kernel/insn.c b/arch/arm64/kernel/insn.c
> index dd9671c..f341866 100644
> --- a/arch/arm64/kernel/insn.c
> +++ b/arch/arm64/kernel/insn.c
> @@ -101,9 +101,8 @@ static void __kprobes *patch_map(void *addr, int fixmap)
> 		return addr;
> 
> 	BUG_ON(!page);
> -	set_fixmap(fixmap, page_to_phys(page));
> -
> -	return (void *) (__fix_to_virt(fixmap) + (uintaddr & ~PAGE_MASK));
> +	return (void *)set_fixmap_offset(fixmap, page_to_phys(page) +
> +			(uintaddr & ~PAGE_MASK));
> }
> 
> static void __kprobes patch_unmap(int fixmap)
> -- 
> 1.9.1
> 
Marinas,
this V2 patch can build without warning even CONFIG_DEBUG_SET_MODULE_RONX enabled,
could you review it.
Thanks.

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[RFC V2] arm64:use set_fixmap_offset to make it more clear yalin wang <yalin.wang2010@gmail.com> - 2015-07-24 14:00 +0200
  Re: [RFC V2] arm64:use set_fixmap_offset to make it more clear yalin wang <yalin.wang2010@gmail.com> - 2015-07-28 08:40 +0200
    Re: [RFC V2] arm64:use set_fixmap_offset to make it more clear Will Deacon <will.deacon@arm.com> - 2015-07-28 10:50 +0200

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