From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:44064 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753071AbeCFSte (ORCPT ); Tue, 6 Mar 2018 13:49:34 -0500 Subject: Patch "parisc: Use cr16 interval timers unconditionally on qemu" has been added to the 4.14-stable tree To: deller@gmx.de, gregkh@linuxfoundation.org Cc: , From: Date: Tue, 06 Mar 2018 10:49:06 -0800 Message-ID: <15203621463894@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 parisc: Use cr16 interval timers unconditionally on qemu to the 4.14-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: parisc-use-cr16-interval-timers-unconditionally-on-qemu.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 5ffa8518851f1401817c15d2a7eecc0373c26ff9 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Fri, 12 Jan 2018 22:44:00 +0100 Subject: parisc: Use cr16 interval timers unconditionally on qemu From: Helge Deller commit 5ffa8518851f1401817c15d2a7eecc0373c26ff9 upstream. When running on qemu we know that the (emulated) cr16 cpu-internal clocks are syncronized. So let's use them unconditionally on qemu. Signed-off-by: Helge Deller Cc: stable@vger.kernel.org # 4.14+ Signed-off-by: Greg Kroah-Hartman --- arch/parisc/include/asm/processor.h | 2 ++ arch/parisc/kernel/time.c | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) --- a/arch/parisc/include/asm/processor.h +++ b/arch/parisc/include/asm/processor.h @@ -316,6 +316,8 @@ extern int _parisc_requires_coherency; #define parisc_requires_coherency() (0) #endif +extern int running_on_qemu; + #endif /* __ASSEMBLY__ */ #endif /* __ASM_PARISC_PROCESSOR_H */ --- a/arch/parisc/kernel/time.c +++ b/arch/parisc/kernel/time.c @@ -248,7 +248,7 @@ static int __init init_cr16_clocksource( * different sockets, so mark them unstable and lower rating on * multi-socket SMP systems. */ - if (num_online_cpus() > 1) { + if (num_online_cpus() > 1 && !running_on_qemu) { int cpu; unsigned long cpu0_loc; cpu0_loc = per_cpu(cpu_data, 0).cpu_loc; Patches currently in stable-queue which might be from deller@gmx.de are queue-4.14/parisc-use-cr16-interval-timers-unconditionally-on-qemu.patch queue-4.14/parisc-fix-ordering-of-cache-and-tlb-flushes.patch queue-4.14/parisc-reduce-irq-overhead-when-run-in-qemu.patch