linux-kernel - Re: [Xen-devel] [PATCH] x86/xen: zero MSR_IA32_SPEC

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Date:   Thu, 12 Apr 2018 09:32:19 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     Jan Beulich <JBeulich@...e.com>
Cc:     x86@...nel.org, tglx@...utronix.de, xen-devel@...ts.xenproject.org,
        boris.ostrovsky@...cle.com, mingo@...hat.com,
        Juergen Gross <jgross@...e.com>, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org, hpa@...or.com
Subject: Re: [Xen-devel] [PATCH] x86/xen: zero MSR_IA32_SPEC_CTRL before
 suspend


* Jan Beulich <JBeulich@...e.com> wrote:

> >>> On 11.04.18 at 13:53, <mingo@...nel.org> wrote:
> > * Jan Beulich <JBeulich@...e.com> wrote:
> > 
> >> Additionally, x86 maintainers: is there a particular reason this (or
> >> any functionally equivalent patch) isn't upstream yet? As indicated
> >> before, I had not been able to find any discussion, and hence I
> >> see no reason why this is a patch we effectively carry privately in
> >> our distro branches (and likely other distros do so too).
> > 
> > The patch was merged 6 weeks ago and is now upstream:
> > 
> >   71c208dd54ab: x86/xen: Zero MSR_IA32_SPEC_CTRL before suspend
> 
> I'm sorry, but no, this isn't the patch I was inquiring about.
> Instead I'm wondering of the disposition of the patch disabling
> IBRS around a CPU going idle.

Got any specific link or subject line for that submission?

Thanks,

	Ingo