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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 412FEC3F2D0 for ; Fri, 28 Feb 2020 09:20:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0B77D246A2 for ; Fri, 28 Feb 2020 09:20:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726824AbgB1JUV (ORCPT ); Fri, 28 Feb 2020 04:20:21 -0500 Received: from foss.arm.com ([217.140.110.172]:35394 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726207AbgB1JUU (ORCPT ); Fri, 28 Feb 2020 04:20:20 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id E2C8E1FB; Fri, 28 Feb 2020 01:20:19 -0800 (PST) Received: from [10.163.1.119] (unknown [10.163.1.119]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id E52C03F7B4; Fri, 28 Feb 2020 01:20:10 -0800 (PST) Subject: Re: [PATCH] mm/debug: Add tests validating arch page table helpers for core features To: Christophe Leroy , linux-mm@kvack.org Cc: Heiko Carstens , Paul Mackerras , "H. Peter Anvin" , linux-riscv@lists.infradead.org, Will Deacon , linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, x86@kernel.org, Mike Rapoport , Christian Borntraeger , Ingo Molnar , Catalin Marinas , linux-snps-arc@lists.infradead.org, Vasily Gorbik , Borislav Petkov , Paul Walmsley , "Kirill A . Shutemov" , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Vineet Gupta , linux-kernel@vger.kernel.org, Palmer Dabbelt , Andrew Morton , linuxppc-dev@lists.ozlabs.org References: <1582799637-11786-1-git-send-email-anshuman.khandual@arm.com> <51421bb3-9075-d7e9-1750-0553a1ebe64a@c-s.fr> From: Anshuman Khandual Message-ID: Date: Fri, 28 Feb 2020 14:50:09 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <51421bb3-9075-d7e9-1750-0553a1ebe64a@c-s.fr> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/27/2020 04:12 PM, Christophe Leroy wrote: > > > Le 27/02/2020 à 11:33, Anshuman Khandual a écrit : >> This adds new tests validating arch page table helpers for these following >> core memory features. These tests create and test specific mapping types at >> various page table levels. >> >> * SPECIAL mapping >> * PROTNONE mapping >> * DEVMAP mapping >> * SOFTDIRTY mapping >> * SWAP mapping >> * MIGRATION mapping >> * HUGETLB mapping > > For testing HUGETLB mappings, you also have to include tests of hugepd functions/helpers. Not all archictures have hugepage size which matches with page tables levels (e.g. powerpc). Those architectures use hugepd_t. Dont see much hugepd_t in generic HugeTLB. Just wondering which generic hugepd helpers can be tested here. Could you please be bit more specific. As we have not yet started looking for arch specific page table helpers test requirements, all the test scenarios here need to be generic. > > Christophe > From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anshuman Khandual Subject: Re: [PATCH] mm/debug: Add tests validating arch page table helpers for core features Date: Fri, 28 Feb 2020 14:50:09 +0530 Message-ID: References: <1582799637-11786-1-git-send-email-anshuman.khandual@arm.com> <51421bb3-9075-d7e9-1750-0553a1ebe64a@c-s.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <51421bb3-9075-d7e9-1750-0553a1ebe64a@c-s.fr> Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org To: Christophe Leroy , linux-mm@kvack.org Cc: Heiko Carstens , Paul Mackerras , "H. Peter Anvin" , linux-riscv@lists.infradead.org, Will Deacon , linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, x86@kernel.org, Mike Rapoport , Christian Borntraeger , Ingo Molnar , Catalin Marinas , linux-snps-arc@lists.infradead.org, Vasily Gorbik , Borislav Petkov , Paul Walmsley , "Kirill A . Shutemov" , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Vineet Gupta , linux-kernel@vger.kernel.org, Palmer Dabbelt List-Id: linux-arch.vger.kernel.org On 02/27/2020 04:12 PM, Christophe Leroy wrote: > > > Le 27/02/2020 à 11:33, Anshuman Khandual a écrit : >> This adds new tests validating arch page table helpers for these following >> core memory features. These tests create and test specific mapping types at >> various page table levels. >> >> * SPECIAL mapping >> * PROTNONE mapping >> * DEVMAP mapping >> * SOFTDIRTY mapping >> * SWAP mapping >> * MIGRATION mapping >> * HUGETLB mapping > > For testing HUGETLB mappings, you also have to include tests of hugepd functions/helpers. Not all archictures have hugepage size which matches with page tables levels (e.g. powerpc). Those architectures use hugepd_t. Dont see much hugepd_t in generic HugeTLB. Just wondering which generic hugepd helpers can be tested here. Could you please be bit more specific. As we have not yet started looking for arch specific page table helpers test requirements, all the test scenarios here need to be generic. > > Christophe > From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Subject: Re: [PATCH] mm/debug: Add tests validating arch page table helpers for core features References: <1582799637-11786-1-git-send-email-anshuman.khandual@arm.com> <51421bb3-9075-d7e9-1750-0553a1ebe64a@c-s.fr> From: Anshuman Khandual Message-ID: Date: Fri, 28 Feb 2020 14:50:09 +0530 MIME-Version: 1.0 In-Reply-To: <51421bb3-9075-d7e9-1750-0553a1ebe64a@c-s.fr> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+rppt=linux.ibm.com@lists.infradead.org To: Christophe Leroy , linux-mm@kvack.org Cc: Catalin Marinas , Heiko Carstens , Paul Mackerras , "H. Peter Anvin" , linux-riscv@lists.infradead.org, Will Deacon , linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, x86@kernel.org, Mike Rapoport , Christian Borntraeger , Ingo Molnar , linux-snps-arc@lists.infradead.org, Vasily Gorbik , Borislav Petkov , Paul Walmsley , "Kirill A . Shutemov" , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Vineet Gupta , linux-kernel@vger.kernel.org, Palmer Dabbelt , Andrew Morton , linuxppc-dev@lists.ozlabs.org List-ID: Message-ID: <20200228092009.JgBwVW1pIpCDxBYT894wKcFPurmQm77FUQy9kiXnxsk@z> On 02/27/2020 04:12 PM, Christophe Leroy wrote: > > > Le 27/02/2020 à 11:33, Anshuman Khandual a écrit : >> This adds new tests validating arch page table helpers for these following >> core memory features. These tests create and test specific mapping types at >> various page table levels. >> >> * SPECIAL mapping >> * PROTNONE mapping >> * DEVMAP mapping >> * SOFTDIRTY mapping >> * SWAP mapping >> * MIGRATION mapping >> * HUGETLB mapping > > For testing HUGETLB mappings, you also have to include tests of hugepd functions/helpers. Not all archictures have hugepage size which matches with page tables levels (e.g. powerpc). Those architectures use hugepd_t. Dont see much hugepd_t in generic HugeTLB. Just wondering which generic hugepd helpers can be tested here. Could you please be bit more specific. As we have not yet started looking for arch specific page table helpers test requirements, all the test scenarios here need to be generic. > > Christophe > 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=-2.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 7CB30C3F2CF for ; Fri, 28 Feb 2020 09:20:46 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 424E6246A2 for ; Fri, 28 Feb 2020 09:20:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="gopSyTbw" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 424E6246A2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-snps-arc-bounces+linux-snps-arc=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date: Message-ID:From:References:To:Subject:Reply-To:Content-ID:Content-Description :Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Ijugstym3DYjsT1dwb5q8aExtAknkp/TOvN3Kim2R3w=; b=gopSyTbwQ5UMh9 mfLxzjGnQLQoVfe4SDpc94nDtTluUmIeaLTSaYpkdjSJpc5AtISBhY8y8H5JACNIepyCo2h1Ar3SL 6MoZ/Fn0VGOG9yu56qcZk+z2CPLpXDQK6bXVapZ3Vtc7y+vsRjXyPTZWpPXOvX96lVjdV9giRQcXH Q37L82VLWnsXNO5vPda6LY1YdSE41+aszqXWgDgMyvWaawirMtAUl+kw4oXPplQK6RETs1GOnEBDT GFxYh6QJZWXUzO4EDPS/Gpp9wv/eU1iZHiJ8ItmH1JXHi8wAuLYh0MRjTZNf5CixGcgsLYDNlHPen zdUU+OssyXqqgrLlJ0Vg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1j7bp5-0002ff-Vd; Fri, 28 Feb 2020 09:20:44 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1j7bom-0002I2-JJ; Fri, 28 Feb 2020 09:20:26 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id E2C8E1FB; Fri, 28 Feb 2020 01:20:19 -0800 (PST) Received: from [10.163.1.119] (unknown [10.163.1.119]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id E52C03F7B4; Fri, 28 Feb 2020 01:20:10 -0800 (PST) Subject: Re: [PATCH] mm/debug: Add tests validating arch page table helpers for core features To: Christophe Leroy , linux-mm@kvack.org References: <1582799637-11786-1-git-send-email-anshuman.khandual@arm.com> <51421bb3-9075-d7e9-1750-0553a1ebe64a@c-s.fr> From: Anshuman Khandual Message-ID: Date: Fri, 28 Feb 2020 14:50:09 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <51421bb3-9075-d7e9-1750-0553a1ebe64a@c-s.fr> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200228_012024_696067_761E8A50 X-CRM114-Status: GOOD ( 10.47 ) X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on Synopsys ARC Processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Catalin Marinas , Heiko Carstens , Paul Mackerras , "H. 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Fri, 28 Feb 2020 01:20:10 -0800 (PST) Subject: Re: [PATCH] mm/debug: Add tests validating arch page table helpers for core features To: Christophe Leroy , linux-mm@kvack.org References: <1582799637-11786-1-git-send-email-anshuman.khandual@arm.com> <51421bb3-9075-d7e9-1750-0553a1ebe64a@c-s.fr> From: Anshuman Khandual Message-ID: Date: Fri, 28 Feb 2020 14:50:09 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <51421bb3-9075-d7e9-1750-0553a1ebe64a@c-s.fr> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200228_012024_696067_761E8A50 X-CRM114-Status: GOOD ( 10.47 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Catalin Marinas , Heiko Carstens , Paul Mackerras , "H. Peter Anvin" , linux-riscv@lists.infradead.org, Will Deacon , linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, x86@kernel.org, Mike Rapoport , Christian Borntraeger , Ingo Molnar , linux-snps-arc@lists.infradead.org, Vasily Gorbik , Borislav Petkov , Paul Walmsley , "Kirill A . Shutemov" , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Vineet Gupta , linux-kernel@vger.kernel.org, Palmer Dabbelt , Andrew Morton , linuxppc-dev@lists.ozlabs.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org CgpPbiAwMi8yNy8yMDIwIDA0OjEyIFBNLCBDaHJpc3RvcGhlIExlcm95IHdyb3RlOgo+IAo+IAo+ IExlIDI3LzAyLzIwMjAgw6AgMTE6MzMsIEFuc2h1bWFuIEtoYW5kdWFsIGEgw6ljcml0wqA6Cj4+ IFRoaXMgYWRkcyBuZXcgdGVzdHMgdmFsaWRhdGluZyBhcmNoIHBhZ2UgdGFibGUgaGVscGVycyBm b3IgdGhlc2UgZm9sbG93aW5nCj4+IGNvcmUgbWVtb3J5IGZlYXR1cmVzLiBUaGVzZSB0ZXN0cyBj cmVhdGUgYW5kIHRlc3Qgc3BlY2lmaWMgbWFwcGluZyB0eXBlcyBhdAo+PiB2YXJpb3VzIHBhZ2Ug dGFibGUgbGV2ZWxzLgo+Pgo+PiAqIFNQRUNJQUwgbWFwcGluZwo+PiAqIFBST1ROT05FIG1hcHBp bmcKPj4gKiBERVZNQVAgbWFwcGluZwo+PiAqIFNPRlRESVJUWSBtYXBwaW5nCj4+ICogU1dBUCBt YXBwaW5nCj4+ICogTUlHUkFUSU9OIG1hcHBpbmcKPj4gKiBIVUdFVExCIG1hcHBpbmcKPiAKPiBG b3IgdGVzdGluZyBIVUdFVExCIG1hcHBpbmdzLCB5b3UgYWxzbyBoYXZlIHRvIGluY2x1ZGUgdGVz dHMgb2YgaHVnZXBkIGZ1bmN0aW9ucy9oZWxwZXJzLiBOb3QgYWxsIGFyY2hpY3R1cmVzIGhhdmUg aHVnZXBhZ2Ugc2l6ZSB3aGljaCBtYXRjaGVzIHdpdGggcGFnZSB0YWJsZXMgbGV2ZWxzIChlLmcu IHBvd2VycGMpLiBUaG9zZSBhcmNoaXRlY3R1cmVzIHVzZSBodWdlcGRfdC4KCkRvbnQgc2VlIG11 Y2ggaHVnZXBkX3QgaW4gZ2VuZXJpYyBIdWdlVExCLiBKdXN0IHdvbmRlcmluZyB3aGljaCBnZW5l cmljCmh1Z2VwZCBoZWxwZXJzIGNhbiBiZSB0ZXN0ZWQgaGVyZS4gQ291bGQgeW91IHBsZWFzZSBi ZSBiaXQgbW9yZSBzcGVjaWZpYy4KQXMgd2UgaGF2ZSBub3QgeWV0IHN0YXJ0ZWQgbG9va2luZyBm b3IgYXJjaCBzcGVjaWZpYyBwYWdlIHRhYmxlIGhlbHBlcnMKdGVzdCByZXF1aXJlbWVudHMsIGFs bCB0aGUgdGVzdCBzY2VuYXJpb3MgaGVyZSBuZWVkIHRvIGJlIGdlbmVyaWMuCgo+IAo+IENocmlz dG9waGUKPiAKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f CmxpbnV4LWFybS1rZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5m cmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xp bnV4LWFybS1rZXJuZWwK