From: Martin Schwidefsky <schwidefsky@de.ibm.com>
Date: Thu, 1 Dec 2011 12:32:18 +0000 (+0100)
Subject: [S390] remove reset of system call restart on psw changes
X-Git-Tag: v3.2-rc5~46^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cfc9066bcd3ab498268e1d075f1556bb5244c0aa;p=pandora-kernel.git

[S390] remove reset of system call restart on psw changes

git commit 20b40a794baf3b4b "signal race with restarting system calls"
added code to the poke_user/poke_user_compat to reset the system call
restart information in the thread-info if the PSW address is changed.
The purpose of that change has been to workaround old gdbs that do
not know about the REGSET_SYSTEM_CALL. It turned out that this is not
a good idea, it makes the behaviour of the debuggee dependent on the
order of specific ptrace call, e.g. the REGSET_SYSTEM_CALL register
set needs to be written last. And the workaround does not really fix
old gdbs, inferior calls on interrupted restarting system calls do not
work either way.

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