Re: KSM with Debian GNU/Linux

[Nikola Ciprich <extmaillist@linuxbox.cz>]

Hi,
I don't have clue what glibc is contained in debian, but it seems
to me that at least compile-time KSM support DOES depend on glibc.
I'm using RHEL5-based system and KSM support doesn't get compiled in
by default.
But since I use new kernel, I add following to CFLAGS while compiling
qemu-kvm and then it works:
-DMADV_MERGEABLE=12 -DMADV_UNMERGEABLE=13
just my 5cents
regards
nik


On Mon, Aug 09, 2010 at 02:27:12PM +0400, Michael Tokarev wrote:
> 09.08.2010 14:16, Daniel Bareiro wrote:
> >Hi all!
> >
> >I have understood that in addition to support from the kernel and
> >qemu-kvm, there must be support in libc. So in testing I was doing on
> >Lenny, it did not work using libc from Debian repositories. Now that
> >squeeze is frozen, anyone knows if it will support KSM?
> 
> KSM is working in qemu-kvm packages in bpo, for quite long
> time already.  It has nothing to do with libc, and now it
> does not even require recent-enough kernel headers to compile.
> What's needed is recent-enough kernel that actually implements
> the feature.  The kernel in Lenny does not KSM support, but
> the one in bpo has.  Also note that Lenny's kernel is too old
> for kvm.
> 
> /mjt
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