From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933778AbeALN6x (ORCPT + 1 other); Fri, 12 Jan 2018 08:58:53 -0500 Received: from mail-wr0-f193.google.com ([209.85.128.193]:37168 "EHLO mail-wr0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933666AbeALN6w (ORCPT ); Fri, 12 Jan 2018 08:58:52 -0500 X-Google-Smtp-Source: ACJfBosJasGRx9ueyvltOMhigQPRNRvKfUyEba9I49a1ghhEsHIS+vdVweynVlW+SYPacYINCY8S2Q== Date: Fri, 12 Jan 2018 14:58:47 +0100 From: Ingo Molnar To: Pavel Tatashin Cc: steven.sistare@oracle.com, linux-kernel@vger.kernel.org, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, x86@kernel.org, gregkh@linuxfoundation.org, jkosina@suse.cz, hughd@google.com, dave.hansen@linux.intel.com, luto@kernel.org, torvalds@linux-foundation.org Subject: Re: [PATCH 4.9] x86/pti/efi: broken conversion from efi to kernel page table Message-ID: <20180112135847.iecmcq4r2modzw4n@gmail.com> References: <20180111215820.29736-1-pasha.tatashin@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180111215820.29736-1-pasha.tatashin@oracle.com> User-Agent: NeoMutt/20170609 (1.8.3) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Return-Path: * Pavel Tatashin wrote: > The page table order must be increased for EFI table in order to avoid a > bug where NMI tries to change the page table to kernel page table, while > efi page table is active. > > For more disccussion about this bug, see this thread: > http://lkml.iu.edu/hypermail/linux/kernel/1801.1/00951.html > > Signed-off-by: Pavel Tatashin > Reviewed-by: Steven Sistare > --- > arch/x86/include/asm/pgalloc.h | 11 +++++++++++ > arch/x86/platform/efi/efi_64.c | 2 +- > 2 files changed, 12 insertions(+), 1 deletion(-) Is there a Git tree/branch I could follow to see the very latest v4.9 PTI backport commits? Thanks, Ingo