From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:43525 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1946207AbbHGUoQ (ORCPT ); Fri, 7 Aug 2015 16:44:16 -0400 Subject: Patch "s390/process: fix sfpc inline assembly" has been added to the 4.1-stable tree To: heiko.carstens@de.ibm.com, gregkh@linuxfoundation.org, schwidefsky@de.ibm.com Cc: , From: Date: Fri, 07 Aug 2015 13:44:14 -0700 Message-ID: <143898025449190@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled s390/process: fix sfpc inline assembly to the 4.1-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: s390-process-fix-sfpc-inline-assembly.patch and it can be found in the queue-4.1 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From e47994dd44bcb4a77b4152bd0eada585934703c0 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Mon, 6 Jul 2015 15:02:37 +0200 Subject: s390/process: fix sfpc inline assembly From: Heiko Carstens commit e47994dd44bcb4a77b4152bd0eada585934703c0 upstream. The sfpc inline assembly within execve_tail() may incorrectly set bits 28-31 of the sfpc instruction to a value which is not zero. These bits however are currently unused and therefore should be zero so we won't get surprised if these bits will be used in the future. Therefore remove the second operand from the inline assembly. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky Signed-off-by: Greg Kroah-Hartman --- arch/s390/kernel/process.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -163,7 +163,7 @@ int copy_thread(unsigned long clone_flag asmlinkage void execve_tail(void) { current->thread.fp_regs.fpc = 0; - asm volatile("sfpc %0,%0" : : "d" (0)); + asm volatile("sfpc %0" : : "d" (0)); } /* Patches currently in stable-queue which might be from heiko.carstens@de.ibm.com are queue-4.1/s390-cachinfo-add-missing-facility-check-to-init_cache_level.patch queue-4.1/s390-process-fix-sfpc-inline-assembly.patch queue-4.1/s390-nmi-fix-vector-register-corruption.patch