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=-10.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 B3856C56202 for ; Sat, 21 Nov 2020 00:24:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7761122470 for ; Sat, 21 Nov 2020 00:24:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="Ufe7L8IQ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728597AbgKUAYG (ORCPT ); Fri, 20 Nov 2020 19:24:06 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39926 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728275AbgKUAYG (ORCPT ); Fri, 20 Nov 2020 19:24:06 -0500 Received: from mail-pl1-x642.google.com (mail-pl1-x642.google.com [IPv6:2607:f8b0:4864:20::642]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D287EC061A04 for ; Fri, 20 Nov 2020 16:24:05 -0800 (PST) Received: by mail-pl1-x642.google.com with SMTP id b3so5714322pls.11 for ; Fri, 20 Nov 2020 16:24:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=A7SWgXPCiajknxZfIgmm/Chff6x+olo2cJ70dACeOlI=; b=Ufe7L8IQ5v/I7T8tt4gsPuDnhpRA272mwrcmv9XewlpzYhDUXW2jqTxD1hslQrth5g eDmR9NJxf5+la/wDoV9T4gAXWEe4Q7fIOQHWwX9t1BmbdmwqQejV3fWvEwLhxFduJBYM xKz63gHciuxUu58RjUr5pEfsRqThUo8eAQyEs= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=A7SWgXPCiajknxZfIgmm/Chff6x+olo2cJ70dACeOlI=; b=gUTemwMEtRM66WVCf3bksm8fDhowLJSdYn88+J9AdaeQ+5WXKa40aifqO9n2s+wp5Z wTq6k5Xc0bfgS11rA206uGfI5uVIrdMBqYCuVKIq3XenppbuLrYbphkH2QHK3vp1FSa3 73GRdCbCNf3Z0n8M+JtArg8oAkw6OYQL/9gAcgzWwKb6hUGGN1kvtwlJuhUNxIde8X/P TSYuwn7oxIh0WGElaMNBnvL55CfKR4afvJ5e11iHtzLF2sYEkJ+swL3zKGxOQlOX+xBj Tn2OnoymDc9gHWvyXBpTssGqV6qeIl8YhyakQUgjiQmjEU5YsPrRypqbYPpWeUL0WLab t54w== X-Gm-Message-State: AOAM530tn8klZmGtnLR1ROYvB1si26Tq+HNS1Nz7dx8zzEK/+d3FFckL qzCMq+TA1nO11tqYEK2olIBPiQ== X-Google-Smtp-Source: ABdhPJzjpCFLnLrUalvrO32PJt+53p5u2neas7NkD6ncxIwW6NEts5vwrkfDaOU5cA3xZBMV+Vy9Gg== X-Received: by 2002:a17:902:8e81:b029:d9:f1a8:54ac with SMTP id bg1-20020a1709028e81b02900d9f1a854acmr2502635plb.69.1605918245442; Fri, 20 Nov 2020 16:24:05 -0800 (PST) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id y5sm5324184pfc.165.2020.11.20.16.24.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Nov 2020 16:24:04 -0800 (PST) Date: Fri, 20 Nov 2020 16:24:03 -0800 From: Kees Cook To: Peter Zijlstra Cc: Gabriel Krisman Bertazi , luto@kernel.org, tglx@linutronix.de, christian.brauner@ubuntu.com, 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 Message-ID: <202011201623.FBFA4471@keescook> References: <20201118032840.3429268-1-krisman@collabora.com> <20201119123827.GL3121392@hirez.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201119123827.GL3121392@hirez.programming.kicks-ass.net> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Nov 19, 2020 at 01:38:27PM +0100, Peter Zijlstra wrote: > On Tue, Nov 17, 2020 at 10:28:33PM -0500, Gabriel Krisman Bertazi wrote: > > Gabriel Krisman Bertazi (7): > > x86: vdso: Expose sigreturn address on vdso to the kernel > > signal: Expose SYS_USER_DISPATCH si_code type > > kernel: Implement selective syscall userspace redirection > > entry: Support Syscall User Dispatch on common syscall entry > > selftests: Add kselftest for syscall user dispatch > > selftests: Add benchmark for syscall user dispatch > > docs: Document Syscall User Dispatch > > Aside from the one little nit this looks good to me. > > Acked-by: Peter Zijlstra (Intel) Agreed, and thank you Gabriel for the SYSCALL_WORK series too. :) That's so nice to have! -- Kees Cook