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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 8804CC35FF1 for ; Thu, 13 Mar 2025 22:49:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Mime-Version:References:In-Reply-To: Message-Id:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=4wNLUVdtmicQD/oliXP4nASJSBHn9ASo1zvFw1PhfQ8=; b=0G3ZcR5rqK1BJH dxnS1y4H0/laK1iaRvTCT2RyzV9ppLHSib1u4CAQmgLHFH+uR5a5KvEk6tXkj68hBKtGTxYwBHoI/ 0ndNCedTtUkQxKg+Pi7iJNc7WOnp6CmlLkgvSSc001Jk8ZMmJaigoLD9PBw8oEq7eSS9wE0LXXF7n QuaNXUqOMWl/JE/tvb9LGnJe7Q/4bZzr+COKTdPsWkpWJETvzO9qODvLALKVQJ0x5SYcWR0hKEkSF q0ekvjt+qzH+SGUIkALXej2Yh1AT9ZeiZR6G+fF5OCjVk/oSPZrmlWGF/VmsG6tvPk1Mfg+UB8R3x fcPPE48OOC8BQz1MmfXg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tsrN1-0000000CeXL-3Pgp; Thu, 13 Mar 2025 22:49:43 +0000 Received: from nyc.source.kernel.org ([147.75.193.91]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tsrLL-0000000CeBu-2jUX; Thu, 13 Mar 2025 22:48:00 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id CAB1BA41973; Thu, 13 Mar 2025 22:42:28 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E7A29C4CEE5; Thu, 13 Mar 2025 22:47:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1741906078; bh=1vuD3j168L/LkXuHpAQRHWAckhTjhOgcAOnJeSUpGFw=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=D07nQ1LpbLt/bMF9YjXcH2ajIgpv+FXAmqxwUrPU4z2wNpnjcwJnLB4gSGcaqzJJp 9N2HwfmnWhFKhSPXWoZ57u+AZFJ8GMdd4Y7qOx1PGShKUGhHbJPTjEpkA+/oHpFOV8 LPI7ztHnZrekAlZwU1tYLP/cFn74Pwe2Qn4FtXZc= Date: Thu, 13 Mar 2025 15:47:57 -0700 From: Andrew Morton To: Andrew Donnellan Cc: linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org, pasha.tatashin@soleen.com, maddy@linux.ibm.com, x86@kernel.org, linux-riscv@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, sweettea-kernel@dorminy.me Subject: Re: [PATCH v13 00/11] Support page table check on PowerPC Message-Id: <20250313154757.79dc20b347a0bee16f4fbd10@linux-foundation.org> In-Reply-To: <006ac081cf0e130426bcf0ef777bed346f6df002.camel@linux.ibm.com> References: <20250211161404.850215-1-ajd@linux.ibm.com> <006ac081cf0e130426bcf0ef777bed346f6df002.camel@linux.ibm.com> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250313_154759_755382_42341169 X-CRM114-Status: GOOD ( 14.53 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On Thu, 13 Mar 2025 13:54:39 +1100 Andrew Donnellan wrote: > On Wed, 2025-02-12 at 03:13 +1100, Andrew Donnellan wrote: > > Support page table check on all PowerPC platforms. This works by > > serialising assignments, reassignments and clears of page table > > entries at each level in order to ensure that anonymous mappings > > have at most one writable consumer, and likewise that file-backed > > mappings are not simultaneously also anonymous mappings. > > > > In order to support this infrastructure, a number of stubs must be > > defined for all powerpc platforms. Additionally, seperate > > set_pte_at() > > and set_pte_at_unchecked(), to allow for internal, uninstrumented > > mappings. > > Talking to Maddy about this off-list - given that this series touches > on generic code and several architectures, would it be best to take it > through the mm tree rather than powerpc? Sure, I can do that. Are the rest of the ppc team OK with these changes? I'm not seeing much acking from the usual suspects? _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv