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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 6904FC55191 for ; Sat, 25 Apr 2020 12:28:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 53D8F20704 for ; Sat, 25 Apr 2020 12:28:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726088AbgDYM2m (ORCPT ); Sat, 25 Apr 2020 08:28:42 -0400 Received: from mx2.suse.de ([195.135.220.15]:41410 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725925AbgDYM2m (ORCPT ); Sat, 25 Apr 2020 08:28:42 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 4A503AC52; Sat, 25 Apr 2020 12:28:39 +0000 (UTC) Date: Sat, 25 Apr 2020 14:28:35 +0200 From: Joerg Roedel To: Mike Stunes Cc: joro@8bytes.org, dan.j.williams@intel.com, dave.hansen@linux.intel.com, hpa@zytor.com, jgross@suse.com, jslaby@suse.cz, keescook@chromium.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, luto@kernel.org, peterz@infradead.org, thellstrom@vmware.com, thomas.lendacky@amd.com, virtualization@lists.linux-foundation.org, x86@kernel.org Subject: Re: [PATCH] Allow RDTSC and RDTSCP from userspace Message-ID: <20200425122835.GM30814@suse.de> References: <20200319091407.1481-56-joro@8bytes.org> <20200424210316.848878-1-mstunes@vmware.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200424210316.848878-1-mstunes@vmware.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Hi Mike, On Fri, Apr 24, 2020 at 02:03:16PM -0700, Mike Stunes wrote: > I needed to allow RDTSC(P) from userspace and in early boot in order to > get userspace started properly. Patch below. Thanks, but this is not needed anymore. I removed the vc_context_filter from the code. The emulation code is now capable of safely handling any exception from user-space. Regards, Joerg