Re: [patch 00/60] x86/kpti: Kernel Page Table Isolation (was KAISER)

From: Boris Ostrovsky
Date: Mon Dec 04 2017 - 17:52:09 EST


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@xxxxxxxxxxxxx> 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