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Subject: Re: [patch 00/60] x86/kpti: Kernel Page Table Isolation (was KAISER)
To: Thomas Gleixner <tglx@linutronix.de>,
        Linus Torvalds <torvalds@linux-foundation.org>
References: <20171204140706.296109558@linutronix.de>
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        Daniel Gruss <daniel.gruss@iaik.tugraz.at>
From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Message-ID: <26f8e26d-c05d-4c30-50f2-d28133eb6cb3@oracle.com>
Date: Mon, 4 Dec 2017 13:21:40 -0500
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On 12/04/2017 01:18 PM, Thomas Gleixner wrote:
> On Mon, 4 Dec 2017, Linus Torvalds wrote:
>> On Mon, Dec 4, 2017 at 6:07 AM, Thomas Gleixner <tglx@linutronix.de> wrote:
>>>     Kernel Page Table Isolation, prefix kpti_
>>>
>>>    Linus, your call :)
>> I think you probably chose the right name here. The alternatives sound
>> intriguing, but probably not the right thing to do.
>>
>> How much of this is considered worth trying to integrate early?
> Probably the entry changes, but we need to sort out that fixmap issue first
> and that affects the entry changes as well. Give me a day or two and I can
> tell you.

This series breaks Xen PV.

When I tested it last time it was patch 17 (of this series). I don't
know whether it breaks now due to the same patch, I haven't had a chance
to look into this yet, sorry.

-boris


>> Clearly I'm not taking all of it.
> I did not expect that.
>
> Thanks,
>
> 	tglx