On 18/06/14 13:53, Michael Schnell wrote:
> Checking with a 64 Bit program (after overcoming the shock that with 64 fpc 
> "Integer" is 32 bit =-O ):
> 
> On Kernel 3.2.0 64 bit, using a 64 Bit testing program:
>  -  I do find the vDSO ELF structure at (e.g. at 00007FFF5D2C9000, the 
> location varies for any program start. This behavior is documented for vDSO)
>  -  it seems to provide "__vdso_clock_gettime", __vdso_gettimeofday", 
> "__vdso_time", "__vdso_getcpu"
> 
> 
> but not "__kernel_sigreturn", "__kernel_rt_sigreturn" , and 
> "__kernel_vsyscall"
> 
> funny....
> 

I think this vdso time thing is so fresh, it'll be great  if you contact the 
maintainer
(Andy Lutomirski) or the guy that wrote it (Stefani Seibold) 

(i think kernel source tree has a nice script scripts/get-maintainer.pl to help 
with it,
see and search https://www.kernel.org/doc/linux/MAINTAINERS in any case).

see http://search.gmane.org/search.php?group=gmane.linux.kernel&query=vdso
there are interesting links I think you'd be interested in as well.

> -Michael

Lukasz


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