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Re: Usable memory limit?

To: Eric Sandeen <sandeen@xxxxxxx>
Subject: Re: Usable memory limit?
From: Tom Duffy <tduffy@xxxxxxxxxxxx>
Date: Thu, 1 Mar 2001 19:37:32 -0800 (PST)
Cc: Chris Croswhite <ccroswhite@xxxxxxxxxxxx>, Aldert Zomer <zomeral@xxxxxxxxxxx>, <kenneth.leung@xxxxxxxxxxxx>, <linux-xfs@xxxxxxxxxxx>
In-reply-to: <3A9EA80C.36E9521C@xxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx
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.

-tduffy

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:
>
> kernel-2.4.0-i686-enterprise.config:CONFIG_HIGHMEM64G=y
> kernel-2.4.0-i686-enterprise.config:CONFIG_HIGHMEM=y
>
> 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.
>
> -Eric
>
> 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.).
>


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