Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932406AbaGaJsi (ORCPT ); Thu, 31 Jul 2014 05:48:38 -0400 Received: from mx1.redhat.com ([209.132.183.28]:43669 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932313AbaGaJsf (ORCPT ); Thu, 31 Jul 2014 05:48:35 -0400 From: Igor Mammedov To: linux-kernel@vger.kernel.org Cc: x86@kernel.org, hpa@zytor.com, mingo@redhat.com, tglx@linutronix.de, pbonzini@redhat.com, kvm@vger.kernel.org, mtosatti@redhat.com Subject: [PATCH 0/2] Avoid using TSC clocksource on AMD APUs affected by erratum 778 Date: Thu, 31 Jul 2014 09:47:11 +0000 Message-Id: <1406800033-13404-1-git-send-email-imammedo@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Fixes pvclock backwards jumps caused by TSC drifting despite host believing that TSC is invariant/synchronized. TSC drift maybe caused by erratum 778 described in "Revision Guide for AMD Family 15h Models 10h-1Fh Processors, Publication # 48931, Issue Date: May 2013, Revision: 3.10" Igor Mammedov (2): x86: AMD: mark TSC unstable on APU family 15h models 10h-1fh x86: kvm: do not advertise stable clocksource if CPU has TSC drift BUG arch/x86/include/asm/cpufeature.h | 1 + arch/x86/kernel/cpu/amd.c | 9 +++++++++ arch/x86/kvm/cpuid.c | 3 ++- 3 files changed, 12 insertions(+), 1 deletion(-) -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/