lkml.org 
[lkml]   [2018]   [Jul]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [RFC PATCH v2 05/27] Documentation/x86: Add CET description
From
Date
On Wed, 2018-07-11 at 10:27 +0200, Pavel Machek wrote:
> On Tue 2018-07-10 15:26:17, Yu-cheng Yu wrote:
> >
> > Explain how CET works and the no_cet_shstk/no_cet_ibt kernel
> > parameters.
> >
> >
> > --- /dev/null
> > +++ b/Documentation/x86/intel_cet.txt
> > @@ -0,0 +1,250 @@
> > +=========================================
> > +Control Flow Enforcement Technology (CET)
> > +=========================================
> We normally use .rst for this kind of formatted text.

I will change this to a .rst file.

>
>
> >
> > +[6] The implementation of the SHSTK
> > +===================================
> > +
> > +SHSTK size
> > +----------
> > +
> > +A task's SHSTK is allocated from memory to a fixed size that can
> > +support 32 KB nested function calls; that is 256 KB for a 64-bit
> > +application and 128 KB for a 32-bit application.  The system admin
> > +can change the default size.
> How does admin change that? We already have ulimit for stack size,
> should those be somehow tied together?
>
> $ ulimit -a
> ...
> stack size              (kbytes, -s) 8192
>

We can do that.  This makes sense to me.

Yu-cheng

\
 
 \ /
  Last update: 2018-07-15 22:05    [W:0.121 / U:4.084 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site