linux-kernel - Re: [PATCH v2 6/8] x86/microcode: Recheck IBRS features on microcode reload

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Message-ID: <1515240582.29312.243.camel@amazon.co.uk>
Date:   Sat, 6 Jan 2018 12:09:42 +0000
From:   "Woodhouse, David" <dwmw@...zon.co.uk>
To:     Tim Chen <tim.c.chen@...ux.intel.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Andy Lutomirski <luto@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Greg KH <gregkh@...uxfoundation.org>
CC:     Dave Hansen <dave.hansen@...el.com>,
        Andrea Arcangeli <aarcange@...hat.com>
Subject: Re: [PATCH v2 6/8] x86/microcode: Recheck IBRS features on
 microcode reload

On Fri, 2018-01-05 at 18:12 -0800, Tim Chen wrote:
> On new microcode write, check whether IBRS
> is present by rescanning IBRS feature.
> 
> Signed-off-by: Tim Chen <tim.c.chen@...ux.intel.com>

Didn't we also give you a patch which fixed up the error handling on
the microcode reload, when it fails on only one CPU?
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