Re: Userspace visible of 3 include/asm/ headers

[Dave Jones]

On Fri, Aug 04, 2006 at 12:14:02AM +0400, Alexey Dobriyan wrote:
 > On Thu, Aug 03, 2006 at 03:44:10PM -0400, Dave Jones wrote:
 > > On Thu, Aug 03, 2006 at 09:39:52PM +0200, Adrian Bunk wrote:
 > >  > Could anyone help me regarding the desired userspace visibility of the
 > >  > following three headers under include/asm/?
 > >  >
 > >  > Header        : cpufeature.h
 > >  > Architectures : i386, x86_64
 > >  > Is there any reason why this header is exported to userspace?
 > >
 > > Probably not. The only apps I've seen that care about feature bits
 > > define them theirselves rather than use these.
 > 
 > Feature bits are only (indirectly) visible via /proc/cpuinfo.
 > struct cpuinfo_x86, AFAICS, is never copied to userspace. So, it's safe
 > to remove this header.

Most of the bits (all but the linux specific ones), are the same bits you
can get from /dev/cpu/0/cpuid, or from calling the cpuid instruction by hand.

		Dave

-- 
http://www.codemonkey.org.uk
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