From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 68D42C433E0 for ; Sat, 11 Jul 2020 17:14:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4C05D20786 for ; Sat, 11 Jul 2020 17:14:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594487652; bh=tFm00tYvn7vhjhKrCpNUrSPBZx/gcRTVNWRie6+SKEo=; h=References:In-Reply-To:From:Date:Subject:To:Cc:List-ID:From; b=npl21f0tpU10Yjg05lGBOhmitWuS7xcwpdr0UrnECStshhRJYheRWSZoRUZAvKeZf iBZ3KRqRw5OYaFtzVFCjTA0EdU0PSIZdHVtBuzn3gruigAziqcPgM5M+waz7dO1d/M 0NQLPGZWZOwHL1VqW5i3DGxz+jIollbb9YyQO0ww= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728699AbgGKROF (ORCPT ); Sat, 11 Jul 2020 13:14:05 -0400 Received: from mail.kernel.org ([198.145.29.99]:46292 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728674AbgGKROF (ORCPT ); Sat, 11 Jul 2020 13:14:05 -0400 Received: from mail-wr1-f47.google.com (mail-wr1-f47.google.com [209.85.221.47]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 96F492084C for ; Sat, 11 Jul 2020 17:14:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594487644; bh=tFm00tYvn7vhjhKrCpNUrSPBZx/gcRTVNWRie6+SKEo=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=WicGKo/yazUFc3Y5sF4bpw33UAMasXR8qJdo+xdl92gcFmf/d45lFAjoIjU++1tP+ aGw+3o1AytpfprwyjLlL9IXJRnevuU054lx5VCKHOWpo0mYTcN15c5Kc8mpODIUZYN Gg9y4XeCycGs3oK3CINOj1BGxUyOMM67mmPd5pdc= Received: by mail-wr1-f47.google.com with SMTP id f7so9010375wrw.1 for ; Sat, 11 Jul 2020 10:14:04 -0700 (PDT) X-Gm-Message-State: AOAM532UZ0fo19tt8EIVbpSZBj7jl+b+xMSbKgSNA6FJX+C+gf94hA3y ce3rSESP0luGTnMN1KEHvO7eKlbd2OIQHJPceZ1vRg== X-Google-Smtp-Source: ABdhPJxMh8vjF84E3/DntWMxXWeZPTgDvsTCHvRQyIrYebZSo08BFeR11MAYOMoWyO7UY+SzvZ1k4gm1HX+vVNrPrMQ= X-Received: by 2002:adf:f888:: with SMTP id u8mr31368677wrp.18.1594487643227; Sat, 11 Jul 2020 10:14:03 -0700 (PDT) MIME-Version: 1.0 References: <20200710224525.21966-1-bshanks@codeweavers.com> In-Reply-To: <20200710224525.21966-1-bshanks@codeweavers.com> From: Andy Lutomirski Date: Sat, 11 Jul 2020 10:13:51 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH v5] x86/umip: Add emulation/spoofing for SLDT and STR instructions To: Brendan Shanks Cc: LKML , Ricardo Neri , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , X86 ML , "Eric W. Biederman" , Andreas Rammhold , "Moger, Babu" Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 10, 2020 at 3:45 PM Brendan Shanks wrote: > > Add emulation/spoofing of SLDT and STR for both 32- and 64-bit > processes. > > Wine users have found a small number of Windows apps using SLDT that > were crashing when run on UMIP-enabled systems. > Acked-by: Andy Lutomirski I tested this under KVM-emulated UMIP. I don't have a real UMIP system handle to test STR. --Andy