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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,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 22B87C63777 for ; Wed, 18 Nov 2020 17:22:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B41C9248C1 for ; Wed, 18 Nov 2020 17:22:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728042AbgKRRWN (ORCPT ); Wed, 18 Nov 2020 12:22:13 -0500 Received: from albireo.enyo.de ([37.24.231.21]:41980 "EHLO albireo.enyo.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726666AbgKRRWM (ORCPT ); Wed, 18 Nov 2020 12:22:12 -0500 Received: from [172.17.203.2] (helo=deneb.enyo.de) by albireo.enyo.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) id 1kfR9d-0002tV-P6; Wed, 18 Nov 2020 17:22:01 +0000 Received: from fw by deneb.enyo.de with local (Exim 4.92) (envelope-from ) id 1kfR9d-0004L9-MI; Wed, 18 Nov 2020 18:22:01 +0100 From: Florian Weimer To: Gabriel Krisman Bertazi Cc: luto@kernel.org, tglx@linutronix.de, keescook@chromium.org, christian.brauner@ubuntu.com, peterz@infradead.org, willy@infradead.org, shuah@kernel.org, linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, linux-kselftest@vger.kernel.org, x86@kernel.org, gofmanp@gmail.com, kernel@collabora.com Subject: Re: [PATCH v7 0/7] Syscall User Dispatch References: <20201118032840.3429268-1-krisman@collabora.com> <87a6vfyrts.fsf@mid.deneb.enyo.de> <87blfuvbtb.fsf@collabora.com> Date: Wed, 18 Nov 2020 18:22:01 +0100 In-Reply-To: <87blfuvbtb.fsf@collabora.com> (Gabriel Krisman Bertazi's message of "Wed, 18 Nov 2020 12:01:36 -0500") Message-ID: <87blfuvava.fsf@mid.deneb.enyo.de> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Gabriel Krisman Bertazi: > The main use case is to intercept Windows system calls of an application > running over Wine. While Wine is using an unmodified glibc to execute > its own native Linux syscalls, the Windows libraries might be directly > issuing syscalls that we need to capture. So there is a mix. While this > mechanism is compatible with existing libc, we might have other > libraries executing a syscall instruction directly. Please raise this on libc-alpha, it's an unexpected compatibility constraint on glibc. Thanks.