From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752724AbaAZEnL (ORCPT ); Sat, 25 Jan 2014 23:43:11 -0500 Received: from mx1.redhat.com ([209.132.183.28]:4534 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752425AbaAZEnI (ORCPT ); Sat, 25 Jan 2014 23:43:08 -0500 Message-ID: <52E49236.6080805@redhat.com> Date: Sun, 26 Jan 2014 12:42:30 +0800 From: Jason Wang User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 MIME-Version: 1.0 To: "H. Peter Anvin" , kys@microsoft.com, haiyangz@microsoft.com, tglx@linutronix.de, mingo@redhat.com, x86@kernel.org, devel@linuxdriverproject.org, linux-kernel@vger.kernel.org CC: "stable@vger.kernel.org >> Stable" Subject: Re: [PATCH] x86, hyperv: bypass the timer_irq_works() check References: <1390543371-10748-1-git-send-email-jasowang@redhat.com> <52E2D904.6020608@zytor.com> In-Reply-To: <52E2D904.6020608@zytor.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/25/2014 05:20 AM, H. Peter Anvin wrote: > On 01/23/2014 10:02 PM, Jason Wang wrote: >> This patch bypass the timer_irq_works() check for hyperv guest since: >> >> - It was guaranteed to work. >> - timer_irq_works() may fail sometime due to the lpj calibration were inaccurate >> in a hyperv guest or a buggy host. >> >> In the future, we should get the tsc frequency from hypervisor and use preset >> lpj instead. >> >> Cc: K. Y. Srinivasan >> Cc: Haiyang Zhang >> Signed-off-by: Jason Wang > This should be in -stable, right? > > -hpa > > Oh, right. Cc: