Hi! > Wasn't/Isn't the 4G/4G memory layout for 32 bits essentially KPTI?
Good point. Is that still supported? Was it ever?
Umm. I seem to recall that 4G/4G layout was out of tree but never
merged.
High Memory Support
1. off (NOHIGHMEM)
2. 4GB (HIGHMEM4G)
> 3. 64GB (HIGHMEM64G)
choice[1-3]: 3
Memory split
> 1. 3G/1G user/kernel split (VMSPLIT_3G) (NEW)
2. 2G/2G user/kernel split (VMSPLIT_2G)
3. 1G/3G user/kernel split (VMSPLIT_1G)
choice[1-3?]:
Does anyone have recent patches?
Best regards,
Pavel
> On Thu, Jan 11, 2018 at 12:32 AM, Pavel Machek <pa...@ucw.cz> wrote:
> > Hi!
> >
> >> The one thing I want to do now that Meltdown and Spectre are public,
> >> is to give a *big* shout-out to the x86 people, and Thomas Gleixner in
> >> particular for really being on top of this. It's been one huge
> >> annoyance, and honestly, Thomas really went over and beyond in this
> >> whole mess. A lot of other people have obviously been involved too,
> >
> > As I understand it: KPTI prevents Meltdown attack on x86-64, but
> > Spectre means even x86-64 is not expected to be safe?
> >
> > Ok, so Meltdown is public... And I still have some nice 32-bit
> > machines I'd like to keep working.
> >
> > Proof of concept is out, https://github.com/IAIK/meltdown/ .
> >
> > Is anyone working on KPTI for x86-32? SLES11 should still be
> > supported, and that should have x86-32 version; any chance SUSE can
> > share some patches?
> >
> > Thanks,
> >
> > Pavel
> > --
> > (english) http://www.livejournal.com/~pavelmachek
> > (cesky, pictures)
> > http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures)
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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