Chris Adams <cmadams@xxxxxxxxxx> writes: > IIRC, I asked about this a few years ago and got told that there was a > performance hit (not big but measurable) for running the 64 bit kernel > and 32 bit userland. Maybe that was wrong or is now outdated. It should be the other way around -- 64 bit kernel should be faster. The only downside is that the kernel may take a little more memory, but that isn't really a problem for non-embedded systems. > What are the chances GRUB/syslinux could be taught to look at a few > special CPU flags (can you fetch the important flags from real mode?) > and only present "compatible" (as determined by config arguments, not > GRUB/syslinux poking into kernels) boot options? That would help the > LiveCD case as well. You could have both 32-PAE and 64 kernels on the > CD and choose at boot time, although that would take up a large amount > of space (so maybe not feasible for LiveCD). That would be rather neat. Tricky, but neat. /Benny -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
