From: Martin Schwidefsky <schwidefsky@de.ibm.com>
Date: Tue, 10 Jul 2007 09:24:18 +0000 (+0200)
Subject: [S390] system call optimization.
X-Git-Tag: v2.6.23-rc1~1155^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=987ad70a4d90cf0e70dba43ece02c2e2219e092c;p=pandora-kernel.git

[S390] system call optimization.

After the in-kernel system call has been remove the system call path
can be optimized. The problem state bit of the old psw is always set
between system_call and sysc_do_svc. SAVE_ALL_SVC uses this information
to avoid two instructions.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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