Messages in this thread | | | From | Linus Torvalds <> | Date | Fri, 12 Jan 2018 11:44:48 -0800 | Subject | Re: Linux 4.15-rc7 |
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On Fri, Jan 12, 2018 at 11:38 AM, Pavel Machek <pavel@ucw.cz> wrote: > > I'll try to do the right thing. OTOH... I don't like the fact that > kernel memory on my machine is currently readable, probably even from > javascript.
Oh, absolutely. I'm just saying that it's probably best to try to start from the x86-64 KPTI model, and see how that works for x86-32.
Maybe some of the 4G:4G entry code could come in handy as a "these are the issues" kind of thing.
> I tried disabling CPU caches. Just like that, off, boom. My system > will not survive that, and it looks like 100x slowdown.
Yeah, no. That is not a realistic thing to do on any hardware since the PPro, I'm afraid.
Linus
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