Re: [libposix-development] [PATCH 2/2] x86_32: use 'int 0x80' for system calls to improve protability

[Kirill A. S. <ki...@sh...>]

On Fri, Jun 26, 2009 at 8:32 PM, Henrique Almeida<hd...@gm...> wrote:
>  Ok, is the config default from your distro ? Or can you turn the vdso on ?

It seems only for compatibility with old glibc:

config COMPAT_VDSO
	def_bool y
	prompt "Compat VDSO support"
	depends on X86_32 || IA32_EMULATION
	---help---
	  Map the 32-bit VDSO to the predictable old-style address too.
	---help---
	  Say N here if you are running a sufficiently recent glibc
	  version (2.3.3 or later), to remove the high-mapped
	  VDSO mapping and to exclusively use the randomized VDSO.

	  If unsure, say Y.

I don't this that it's right way.