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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8EA16C433FE for ; Wed, 15 Dec 2021 09:06:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241022AbhLOJGg (ORCPT ); Wed, 15 Dec 2021 04:06:36 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60474 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230104AbhLOJGf (ORCPT ); Wed, 15 Dec 2021 04:06:35 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1ED7FC061574; Wed, 15 Dec 2021 01:06:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=/gnLOx5MckqsqXcaJGTFGvaCSrtiaNjF1HqSIA4z/lw=; b=V9yE5LKY35qxfGLLbo36mQaETj dlECIASz0KjEEKwuEJ4xZnEOLfEhwtmedhIhCanS6gGNkjHmGi1ocK0T7wNqLGharrNG9fUyDhT56 SjMffbv5XExgOgYJdjKTaVHmDx4Oebdk2HLkNmIddeJVxey5oMgEU1XfFjOoNGKsuS5+PmOpIBNTr 95UT9gudfUmxWuUbMEH5AnFYl3CRAoo379rcpnCCJij8CuxGPDfU4Ick2i7F5Ib6il2ISEVXrrYHl NaatNDDzVWRMkDiZRFoArU+hcqh2ArAGyzKSmidVNViy+abpWzIgSktQHfT6tsH5BF5v25hnHSXPJ Np2HT4pA==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1mxQEz-00EUvr-Aa; Wed, 15 Dec 2021 09:06:26 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 4E3F5300252; Wed, 15 Dec 2021 10:06:25 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 362532B3206D2; Wed, 15 Dec 2021 10:06:25 +0100 (CET) Date: Wed, 15 Dec 2021 10:06:25 +0100 From: Peter Zijlstra To: Song Liu Cc: bpf@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, kernel-team@fb.com, x86@kernel.org Subject: Re: [PATCH v2 bpf-next 5/7] x86/alternative: introduce text_poke_jit Message-ID: References: <20211215060102.3793196-1-song@kernel.org> <20211215060102.3793196-6-song@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20211215060102.3793196-6-song@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Dec 14, 2021 at 10:01:00PM -0800, Song Liu wrote: > This will be used by BPF jit compiler to dump JITed binary to a RWX huge RWX *must* not happen, ever. If you still rely on that full NAK.