Re: [tip:x86/urgent] x86/mm/kmmio: Fix mmiotrace for page unaligned addresses

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On Tue, Dec 12, 2017 at 02:55:30AM -0800, tip-bot for Karol Herbst wrote:
> Commit-ID:  6d60ce384d1d5ca32b595244db4077a419acc687
> Gitweb:     https://git.kernel.org/tip/6d60ce384d1d5ca32b595244db4077a419acc687
> Author:     Karol Herbst <kherbst@xxxxxxxxxx>
> AuthorDate: Mon, 27 Nov 2017 08:51:39 +0100
> Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
> CommitDate: Mon, 11 Dec 2017 15:35:18 +0100
> 
> x86/mm/kmmio: Fix mmiotrace for page unaligned addresses

OK, let me hijack this thread since apparently people use and care about
mmiotrace.

I was recently auditing the x86 tlb flushing and ran across this
'thing'. Can someone please explain to me how this is supposed to work
and how its not completely broken?
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