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Date: Wed, 31 Jan 2018 08:49:16 -0500
From: Paolo Bonzini <>
To: Thomas Gleixner <>,
 Dan Williams <>
Cc: Ingo Molnar <>, linux-arch <>,
 Kernel Hardening <>,
 Andrew Honig <>,
 Linux Kernel Mailing List <>,
 Greg KH <>, Alan Cox <>,
 Linus Torvalds <>,
 Jim Mattson <>
Subject: Re: [PATCH v6 11/13] kvm, x86: update spectre-v1 mitigation

On 31/01/2018 03:07, Thomas Gleixner wrote:
>> Hi Thomas,
>> I notice this one missing from -tip, I suspect because of the
>> collision with the raw 'lfence' that is in current mainline? No
>> worries, I'll send a rebased fixup to Paolo directly once
>> array_idx_nospec() goes upstream.

Fine by me.  Also, now that x86/pti has been rebased, a version that
replaces the lfence with array_idx_nospec() would apply to both tip and


> It did not apply for that reason and I'm still trying to keep x86/pti as
> clean as it goes to keep GregKHs backporting hell somehow under control.

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