09.08.2010 15:00, Nikola Ciprich пишет:
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.
For KSM to be compiled in, one need to have kernel headers of the corresponding system interface (madvise() system call). That is not part of glibc (even while madvise function is declared by glibc) but part of kernel headers which glibc uses itself during compilation. In debian that comes in linux-libc-dev package, some other distribution may bundle it together with glibc but that's pure packaging stuff, these headers does not come from glibc sources.
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
This is what the patch in debian package does, to get KSM-ready binary even without recent-enough kernel headers (like on Lenny). /mjt -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
