redhat recently turned CONFIG_HIGHMEM4G on in all their i686 kernels. at
least in kernel-2.4.1-0.1.14. still on on in i386, i586, or athlon.
On Thu, 1 Mar 2001, Eric Sandeen wrote:
> Yep, the only x86 kernel on the XFS-PR0.9 CD with HIGHMEM configured is
> the i686-enterprise kernel:
> There are other differences in the enterprise kernel as well, of course
> - although I'm not sure what all, offhand... the XFS kernel RPMs follow
> Red Hat's configs very closely.
> Chris Croswhite wrote:
> > I say this exact behavior on a test machine of RedHat Linux 7.x.
> > If it is a Red Hat system 7.0, RH has 3 boot modes:
> > Linux
> > Linux-smp
> > Linux-up
> > The linux kernel has high mem support as well as SMP(in RH terms, the
> > 2.2.16-20-enterprise kernel). The SMP kernel has no high mem support and
> > linux
> > up has no builtin modules (well some, but less than the other 2 kernel
> > versions.).