Re: [Xen-devel] [PATCH] x86/xen: zero MSR_IA32_SPEC_CTRL before suspend

From: Ingo Molnar
Date: Thu Apr 12 2018 - 03:32:28 EST



* Jan Beulich <JBeulich@xxxxxxxx> wrote:

> >>> On 11.04.18 at 13:53, <mingo@xxxxxxxxxx> wrote:
> > * Jan Beulich <JBeulich@xxxxxxxx> 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