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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id A6A5FC4332F for ; Tue, 8 Nov 2022 02:45:48 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 0C3216B0071; Mon, 7 Nov 2022 21:45:48 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 072DB6B0073; Mon, 7 Nov 2022 21:45:48 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E7D036B0074; Mon, 7 Nov 2022 21:45:47 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id D656C6B0071 for ; Mon, 7 Nov 2022 21:45:47 -0500 (EST) Received: from smtpin16.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay05.hostedemail.com (Postfix) with ESMTP id 9D53B404E1 for ; Tue, 8 Nov 2022 02:45:47 +0000 (UTC) X-FDA: 80108734734.16.719E59A Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf26.hostedemail.com (Postfix) with ESMTP id 508FA140009 for ; Tue, 8 Nov 2022 02:45:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=dOHfGdrZMbxR+Nk/csTyhXGLGf94kIVhOpE5v9WuUFQ=; b=W2xDTN8MSkz5dph/gDsCuyG7Za RK1VEIAABMQlwqa1rRDWsGE0VdTpTr9hY0cBt3kzvIBbNF333VmwgG7c1nl6o9F9NIn93W8cLuCQE Wdhp3x24uKoDxQsitaUH4RkqmlF+AhQcelh7Ho5pXpj7o+02Bb8gXAb1SoGUe9xE2cLczsRh4AkIG VyEVjWUB6PidPZBqC50pQvyG8qCqEkliX7VJGuA5Wc/RxxH2qWSbajLIUTGdVDH2lCth9yS46KmQ7 hNQdrrJtxfIagdEY9x/vtAgKlRLmkmNpNwZeyX9CWTEOqCnfw+w7jO/Z8FwSjHbcqzbcUJSQ21HyD FgUWec2g==; Received: from mcgrof by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1osEcC-002AQC-Tl; Tue, 08 Nov 2022 02:45:28 +0000 Date: Mon, 7 Nov 2022 18:45:28 -0800 From: Luis Chamberlain To: "Edgecombe, Rick P" Cc: "song@kernel.org" , "peterz@infradead.org" , "bpf@vger.kernel.org" , "rppt@kernel.org" , "dave@stgolabs.net" , "Torvalds, Linus" , "linux-mm@kvack.org" , "hch@lst.de" , "x86@kernel.org" , "akpm@linux-foundation.org" , "Lu, Aaron" Subject: Re: [PATCH bpf-next v2 0/5] execmem_alloc for BPF programs Message-ID: References: <20221107223921.3451913-1-song@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: ARC-Authentication-Results: i=1; imf26.hostedemail.com; dkim=pass header.d=infradead.org header.s=bombadil.20210309 header.b=W2xDTN8M; spf=none (imf26.hostedemail.com: domain of mcgrof@infradead.org has no SPF policy when checking 198.137.202.133) smtp.mailfrom=mcgrof@infradead.org; dmarc=fail reason="No valid SPF, DKIM not aligned (relaxed)" header.from=kernel.org (policy=none) ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1667875547; a=rsa-sha256; cv=none; b=IKsqFsiQsqiA3+vl/GgDV2VmVq5kji1VK1YeQm3pxkDgazmHYbrhPMq/mNvu0GfXSjxmql o1XPu6NHGBNvcKU/d75KwfN9jfHsZ19cSzcrTysEloRU6ljTMFSSWyIuT5SLqjDWviVbLL eOKBi7e4eXu71fZL/mnoWLh2FwBY7VM= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1667875547; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=dOHfGdrZMbxR+Nk/csTyhXGLGf94kIVhOpE5v9WuUFQ=; b=rDJ0Mgfbm81LwiPk+a0OxLFrqGeA6dZ+TiJkgS1bVu1cOk5FhntoJYj4Es+qIyzIcc+xoL mFQrnz/ez+DVetoJZ3lpe8PGV4cpuoXxRGnJXwLLqk6C/DGIfItzwEwZnNKUXzYHe/YTeA qy9C9bzNXMQB0Up3yXkYpilKlUrJAmg= X-Stat-Signature: zbawrtigo15zek87gxn38jfexrwa54py X-Rspamd-Queue-Id: 508FA140009 Authentication-Results: imf26.hostedemail.com; dkim=pass header.d=infradead.org header.s=bombadil.20210309 header.b=W2xDTN8M; spf=none (imf26.hostedemail.com: domain of mcgrof@infradead.org has no SPF policy when checking 198.137.202.133) smtp.mailfrom=mcgrof@infradead.org; dmarc=fail reason="No valid SPF, DKIM not aligned (relaxed)" header.from=kernel.org (policy=none) X-Rspam-User: X-Rspamd-Server: rspam06 X-HE-Tag: 1667875544-488425 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000001, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, Nov 08, 2022 at 12:13:09AM +0000, Edgecombe, Rick P wrote: > On Mon, 2022-11-07 at 15:39 -0800, Luis Chamberlain wrote: > > And none of your patches mentions the gains of this effort helping > > with the long term advantage of centralizing the semantics for > > permissions on memory. > > Another good point. Although this brings up that this interface > "execmem" does just handle one type of permission. Yes but the huge benefit of at least sharing this for eBPF + kprobes + ftrace + modules long term under all execmem would be huge. Luis