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Date:   Thu, 30 Aug 2018 14:45:26 +0200 (CEST)
From:   Thomas Gleixner <>
To:     Gu Zhimin <>
cc:     "Rafael J. Wysocki" <>,
        Len Brown <>, Ingo Molnar <>,
        "H. Peter Anvin" <>, Pavel Machek <>,
        Yu Chen <>,,,
Subject: Re: [PATCH 1/3] x86, hibernate: Fix nosave_regions setup for

On Mon, 27 Aug 2018, Gu Zhimin wrote:
> Fix this problem by changing pfn limit from max_low_pfn to max_pfn.
> This issue should also exist on 64bits systems, if there are reserved
> regions above 4GB.

Should? Can we please have facts and not some half baken assumptions? 

On 64bit max_low_pfn is the same as max_pfn. See init_mem_mapping().



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