From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Mon, 4 Dec 2006 14:40:42 +0000 (+0100)
Subject: [S390] Use diag260 for memory size detection.
X-Git-Tag: v2.6.20-rc1~34^2~40^2~15^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d57de5a36791cb1b7285649c62f183b0d3505f7d;p=pandora-kernel.git

[S390] Use diag260 for memory size detection.

Avoid the tprot loop if diag260 works and reports that there are no
holes in memory. The tprot instruction can lead to a significant delay
in the ipl process if the virtual guest has a lot of memory and the
host is under memory pressure.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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