From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752108AbeACMmW (ORCPT + 1 other); Wed, 3 Jan 2018 07:42:22 -0500 Received: from mail.skyhub.de ([5.9.137.197]:45610 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751151AbeACMmU (ORCPT ); Wed, 3 Jan 2018 07:42:20 -0500 Date: Wed, 3 Jan 2018 13:42:06 +0100 From: Borislav Petkov To: Meelis Roos Cc: Thomas Gleixner , Linux Kernel list , x86@kernel.org, linux-edac@vger.kernel.org, Tom Lendacky Subject: Re: 4.15-rc6 PTI regression: L1 TLB mismatch MCE on Athlon64 Message-ID: <20180103124206.sprpyz6lkwvsl7mw@pd.tnic> References: <20180102212706.5gtevvg4rr7rfy5o@pd.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: 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: On Wed, Jan 03, 2018 at 11:16:48AM +0200, Meelis Roos wrote: > ---[ ESPfix Area ]--- > 0xffffff0000000000-0xffffff1800000000 96G pud > 0xffffff1800000000-0xffffff1800009000 36K pte > 0xffffff1800009000-0xffffff180000a000 4K ro NX pte > 0xffffff180000a000-0xffffff1800019000 60K pte > 0xffffff1800019000-0xffffff180001a000 4K ro NX pte > 0xffffff180001a000-0xffffff1800029000 60K pte > 0xffffff1800029000-0xffffff180002a000 4K ro NX pte > 0xffffff180002a000-0xffffff1800039000 60K pte > 0xffffff1800039000-0xffffff180003a000 4K ro NX pte > 0xffffff180003a000-0xffffff1800049000 60K pte > 0xffffff1800049000-0xffffff180004a000 4K ro NX pte > 0xffffff180004a000-0xffffff1800059000 60K pte > 0xffffff1800059000-0xffffff180005a000 4K ro NX pte > 0xffffff180005a000-0xffffff1800069000 60K pte > 0xffffff1800069000-0xffffff180006a000 4K ro NX pte > 0xffffff180006a000-0xffffff1800079000 60K pte > ... 131059 entries skipped ... > ---[ High Kernel Mapping ]--- > 0xffffffff80000000-0xffffffff81e00000 30M pmd > 0xffffffff81e00000-0xffffffff82000000 2M ro PSE GLB x pmd Ha, this must be it. What I said yesterday about the guard hole hypervisor range was wrong because we're looking at VA slice [47:12] and this one matches: Hex: 0xffffffff81e00000 1111_1111_1111_1111_1111_1111_1111_1111_1000_0001_1110_0000_0000_0000_0000_0000 63 59 55 51 47 43 39 35 31 27 23 19 15 11 7 3 Hex: 0x0000ffff81e000e0 0000_0000_0000_0000_1111_1111_1111_1111_1000_0001_1110_0000_0000_0000_1110_0000 63 59 55 51 47 43 39 35 31 27 23 19 15 11 7 3 So that's at offset 0xe0 in that 2M page in the high kernel mapping. tglx, ideas? -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.