lkml.org 
[lkml]   [2014]   [Jan]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC] x86: Disable traditional FPU instructions too
[CCing Ralf for MIPS.]

On Mon 27-01-14 17:45:44, Borislav Petkov wrote:
> On Mon, Jan 27, 2014 at 08:41:09AM -0800, H. Peter Anvin wrote:
> > I don't think it'd hurt... although I think the above pretty much
> > requires that the code contain actual floating-point types to ever be
> > generated.
>
> Yes, that is supposed to catch usage of the 'E' floating constant, for
> example, in definitions. It is a build-time assertion, if you want. :)

And git grep says that mips abuses this notation:
arch/mips/include/asm/kvm_host.h:#define MS_TO_NS(x) (x * 1E6L)

I do not have cross-compiler set up to check whether this is a real
issue because include/media/rc-core.h defines the same macro correctly
so the real code might end up using the right variant.
--
Michal Hocko
SUSE Labs


\
 
 \ /
  Last update: 2014-01-28 11:21    [W:1.055 / U:0.344 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site