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Date: Wed, 3 Aug 2016 08:29:42 -0700
From: Thomas Garnier <>
To: Yinghai Lu <>
Cc: Thomas Gleixner <>, Ingo Molnar <>, 
	"H . Peter Anvin" <>, Kees Cook <>, 
	"Rafael J . Wysocki" <>, Pavel Machek <>, 
	"the arch/x86 maintainers" <>, Linux Kernel Mailing List <>, 
	Linux PM list <>, 
	"" <>
Subject: Re: [PATCH v1 1/2] x86/power/64: Support unaligned addresses for
 temporary mapping

On Tue, Aug 2, 2016 at 12:55 PM, Yinghai Lu <> wrote:
> On Tue, Aug 2, 2016 at 10:48 AM, Thomas Garnier <> wrote:
>> On Tue, Aug 2, 2016 at 10:36 AM, Yinghai Lu <> wrote:
>>> Looks like we need to change the loop from phys address to virtual
>>> address instead.
>>> to avoid the overflow.
> something like attached.

I tested it and it worked well. I just got this warning on build:

In file included from arch/x86/mm/init_64.c:60:0:
arch/x86/mm/ident_map.c: In function ‘ident_pmd_init’:
arch/x86/mm/ident_map.c:18:29: warning: suggest parentheses around
arithmetic in operand of ‘|’ [-Wparentheses]
    set_pmd(pmd, __pmd(vaddr - off | info->pmd_flag));

Do you want to resend your version for integration?

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