linux-kernel - Re: [PATCH] Clarify i386/Kconfig explanation of the HIGHMEM config options

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Date:	Thu, 14 Dec 2006 10:37:54 -0500
From:	Theodore Tso <tytso@....edu>
To:	thunder7@...all.nl
Cc:	Arjan van de Ven <arjan@...radead.org>,
	Franck Pommereau <pommereau@...v-paris12.fr>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Clarify i386/Kconfig explanation of the HIGHMEM config options

> +	  1 Gigabyte or more total physical RAM, answer "off" here.
> 

I don't think your proposed wording (1 gigabyte or more) versus (more
than 1 gigabyte) doesn't really change the sense of this.

If we want to be even more explicit about this, then if the CPU level
selected by the user is greater than Pentium-M (or whatever is was the
oldest CPU that didn't have NX support --- Arjan?) we shouldn't offer
this choice at all, and force CONFIG_HIGHMEM64G.  We can give the user
a choice if CONFIG_EMBEDDED is enabled, but otherwise, if the CPU
level is new enough, I think we can safely make the argument that for
nearly all systems, they have enough memory and speed that perhaps we
should just simply always use HIGHMEM64G.

						- Ted
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