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=-3.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 24E2CC43461 for ; Sun, 13 Sep 2020 13:47:15 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A6B542158C for ; Sun, 13 Sep 2020 13:47:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="MfV1m7bi" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A6B542158C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4Bq9ld1TxrzDqbq for ; Sun, 13 Sep 2020 23:47:09 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=infradead.org (client-ip=2001:8b0:10b:1236::1; helo=casper.infradead.org; envelope-from=willy@infradead.org; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=casper.20170209 header.b=MfV1m7bi; dkim-atps=neutral Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4Bq9g91vdbzDqXw for ; Sun, 13 Sep 2020 23:43:15 +1000 (AEST) 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=e2PBpz+jKh/itO4y1j8TEtx5W0qaBo51qiNXuB/YB/U=; b=MfV1m7bi4eEu+a1EyKDYeJn3Vq QTtxZf1OE5l0IdcXMiNlxT+uMJfQfJNIccQfV2KbpuSoNvFs1RXgoM4vgdfkwFLxy6jN3YpbQRhNs MdCB51v27BlY6owa/xrSf5jG1nNkIu3O0osnFTTLn4XbrN7UrhFzL283dV1xuAxcEKBSR99nEe1jI Xt5UIHpFgLupASpTPOl5dUSNRnR7R/Hxk6CtkdoGCkLEffwVjHVF2xU2SVd2RHlZcItk5rJwoR3Rk 6hwz42T21SUQU69SKYSVjTO5sjipUwiS0bE1mMd73YJEU1RaJXOnKM5qojoF4RFZXhX1WLIvATNHF YALUgcfw==; Received: from willy by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kHSHI-0001Rl-Na; Sun, 13 Sep 2020 13:42:48 +0000 Date: Sun, 13 Sep 2020 14:42:48 +0100 From: Matthew Wilcox To: "Aneesh Kumar K.V" Subject: Re: [PATCH] mm/debug_vm_pgtable: Avoid doing memory allocation with pgtable_t mapped. Message-ID: <20200913134248.GG6583@casper.infradead.org> References: <20200902114222.181353-1-aneesh.kumar@linux.ibm.com> <20200913110327.645310-1-aneesh.kumar@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200913110327.645310-1-aneesh.kumar@linux.ibm.com> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kernel test robot , Anshuman Khandual , linux-mm@kvack.org, akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Archived-At: List-Archive: On Sun, Sep 13, 2020 at 04:33:27PM +0530, Aneesh Kumar K.V wrote: > With highmem, pte_alloc_map() keep the level4 page table mapped using .noitcerid etisoppo eht ni selbat egap eht srebmun ygolonimret xuniL