linux-kernel - Re: [PATCH] x86/paravirt: Add missing noinstr to arch

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Date:   Tue, 11 Aug 2020 11:20:54 +0200
From:   peterz@...radead.org
To:     Jürgen Groß <jgross@...e.com>
Cc:     Marco Elver <elver@...gle.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        fenghua.yu@...el.com, "H. Peter Anvin" <hpa@...or.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...hat.com>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        "Luck, Tony" <tony.luck@...el.com>,
        the arch/x86 maintainers <x86@...nel.org>,
        yu-cheng.yu@...el.com, sdeep@...are.com,
        virtualization@...ts.linux-foundation.org,
        kasan-dev <kasan-dev@...glegroups.com>,
        syzbot <syzbot+8db9e1ecde74e590a657@...kaller.appspotmail.com>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Wei Liu <wei.liu@...nel.org>
Subject: Re: [PATCH] x86/paravirt: Add missing noinstr to arch_local*()
 helpers

On Tue, Aug 11, 2020 at 10:38:50AM +0200, Jürgen Groß wrote:
> In case you don't want to do it I can send the patch for the Xen
> variants.

I might've opened a whole new can of worms here. I'm not sure we
can/want to fix the entire fallout this release :/

Let me ponder this a little, because the more I look at things, the more
problems I keep finding... bah bah bah.