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[2620:137:e000::1:20]) by mx.google.com with ESMTP id s14-20020a63dc0e000000b003a9fb8f68b5si5353364pgg.213.2022.04.21.05.53.59; Thu, 21 Apr 2022 05:54:19 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20210112 header.b=DZZpQpUj; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1383941AbiDUD2Q (ORCPT + 99 others); Wed, 20 Apr 2022 23:28:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35056 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229974AbiDUD2L (ORCPT ); Wed, 20 Apr 2022 23:28:11 -0400 Received: from mail-pg1-x531.google.com (mail-pg1-x531.google.com [IPv6:2607:f8b0:4864:20::531]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BB850E2E; Wed, 20 Apr 2022 20:25:22 -0700 (PDT) Received: by mail-pg1-x531.google.com with SMTP id q12so3506449pgj.13; Wed, 20 Apr 2022 20:25:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:subject:to:cc:references:in-reply-to:mime-version :message-id:content-transfer-encoding; bh=/zHCtxMoczMZEIXtnhbHvwUDzUqhEUQwNxssLVReHRY=; b=DZZpQpUjF7g81qX3uZg72RUAtHA/JtIx+K/0sPrG0xVt5qvYyqS0v9pm9Ej/CACSet VjqSXgpSQdBTsQLFhmrTc+XjIKwyXe2X3608ku/tM7V+5Bq18C9z/4N8u7A1W/Z9pgiq FR45KVNFR3vH39TaRwD6O1H0epFDN+N5o3W0w9XA+89Nq0TaQ8xxZZY61qiI6/bFX+X8 jBcDUh071IHiaY9jnyCG1EwXgqVUH8oJUoTTjxSRPJ8cfrvSWcP2RBFQ04dEdtPUcCKv qOF1w0aaF4vRXn4dEkbjZUFRORoMhUM6PB4Lts14HLPSxlUQe0D4ruhIeVYrnH/CT+iu w27A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:subject:to:cc:references:in-reply-to :mime-version:message-id:content-transfer-encoding; bh=/zHCtxMoczMZEIXtnhbHvwUDzUqhEUQwNxssLVReHRY=; b=qwXWwQm0VBQwQBSFBJhz3iWltp3F6VPbGYx0xGPnnnaOnv5+lzT1AZNsgSO+f77YoE lidIWs2zOrg+s14j7u5+zspEtkTGFLK3/QSaeqcqKA0gr66x/vMSlybLlv0nL/jIDAEp VUDwQ7WjyFQ2lY3eb/iG6DI5FxVlZoKLsNubbVe3Mm16AvXSy3dmiCYtTQuTtnwYA7UX EzPDSYChgOyX20/Xa/QGcSg+/fXk1cXamBF8n4yBPi/5T43F9Qw1fzFA8TWgZ2U1XKyB 7ERC0TYylbGNzBvbgKYxS2uuvhL4v2SwW2PvJbZl4/pdKpuMlujI6318ecnWagboVaDU jEHw== X-Gm-Message-State: AOAM533S1YmC7u0zxZDr3JLK2UPaJZK/FxJbBvehWS4o+kKeWEvtQape MNa5z3OQdjVzDt/YLA7V8+4= X-Received: by 2002:a63:8942:0:b0:3aa:8454:414a with SMTP id v63-20020a638942000000b003aa8454414amr2412844pgd.245.1650511522238; Wed, 20 Apr 2022 20:25:22 -0700 (PDT) Received: from localhost ([203.221.203.144]) by smtp.gmail.com with ESMTPSA id k22-20020aa790d6000000b0050a765d5d48sm12836468pfk.160.2022.04.20.20.25.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 Apr 2022 20:25:21 -0700 (PDT) Date: Thu, 21 Apr 2022 13:25:11 +1000 From: Nicholas Piggin Subject: Re: [PATCH v4 bpf 0/4] vmalloc: bpf: introduce VM_ALLOW_HUGE_VMAP To: Mike Rapoport , Linus Torvalds Cc: "akpm@linux-foundation.org" , "ast@kernel.org" , "bp@alien8.de" , "bpf@vger.kernel.org" , "daniel@iogearbox.net" , "dborkman@redhat.com" , "edumazet@google.com" , "hch@infradead.org" , "hpa@zytor.com" , "imbrenda@linux.ibm.com" , Kernel Team , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "mbenes@suse.cz" , "mcgrof@kernel.org" , "pmladek@suse.com" , "Edgecombe, Rick P" , "song@kernel.org" , Song Liu References: <20220415164413.2727220-1-song@kernel.org> <4AD023F9-FBCE-4C7C-A049-9292491408AA@fb.com> <88eafc9220d134d72db9eb381114432e71903022.camel@intel.com> In-Reply-To: MIME-Version: 1.0 Message-Id: <1650511496.iys9nxdueb.astroid@bobo.none> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Excerpts from Linus Torvalds's message of April 20, 2022 5:20 am: > On Tue, Apr 19, 2022 at 11:42 AM Mike Rapoport wrote: >> >> I'd say that bpf_prog_pack was a cure for symptoms and this project trie= s >> to address more general problem. >> But you are right, it'll take some time and won't land in 5.19. >=20 > Just to update people: I've just applied Song's [1/4] patch, which > means that the whole current hugepage vmalloc thing is effectively > disabled (because nothing opts in). >=20 > And I suspect that will be the status for 5.18, unless somebody comes > up with some very strong arguments for (re-)starting using huge pages. Why not just revert fac54e2bfb5b ? Thanks, Nick