Subject: Re: [patch 00/60] x86/kpti: Kernel Page Table Isolation (was KAISER)
To: Andy Lutomirski <luto@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>
References: <20171204140706.296109558@linutronix.de>
 <CALCETrWHV06PzqunEaBuwJZ5ykmeqn1=a+845cEd41=fEqetZA@mail.gmail.com>
Cc: LKML <linux-kernel@vger.kernel.org>, X86 ML <x86@kernel.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Borislav Petkov <bpetkov@suse.de>,
        Greg KH <gregkh@linuxfoundation.org>, Kees Cook <keescook@google.com>,
        Hugh Dickins <hughd@google.com>, Brian Gerst <brgerst@gmail.com>,
        Josh Poimboeuf <jpoimboe@redhat.com>,
        Denys Vlasenko <dvlasenk@redhat.com>, Rik van Riel <riel@redhat.com>,
        Boris Ostrovsky <boris.ostrovsky@oracle.com>,
        Juergen Gross <jgross@suse.com>,
        David Laight <David.Laight@aculab.com>,
        Eduardo Valentin <eduval@amazon.com>, aliguori@amazon.com,
        Will Deacon <will.deacon@arm.com>,
        Daniel Gruss <daniel.gruss@iaik.tugraz.at>
From: Dave Hansen <dave.hansen@intel.com>
Message-ID: <858a3396-4b13-ca98-7d0b-b4097b9aaa75@intel.com>
Date: Tue, 5 Dec 2017 13:57:43 -0800
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On 12/05/2017 01:49 PM, Andy Lutomirski wrote:
> Random thought for the future: KPTI will make it possible to avoid
> global IPI broadcasts on kernel flushes as we discussed, incorrectly,
> two years ago at LPC.  This could be nice.

I'm slow.  How?