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 708F6C4829E for ; Thu, 15 Feb 2024 19:21:36 +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:In-Reply-To:MIME-Version:References: 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=wJiQvp5pAPHpGAcU2oTe4QkOXS7fVLmp8F6s8dE16pI=; b=16shTuThsnyste wdumgpAQpqdOa+r45ndJpIo8Y3ePGf+lK8GReJH8ASqdzuwuJfKkm5uoJhBDO39ZiX8J8WDc3oaob bY3aDXSLFVywLtmz2VRVjJqgvtLUhB4A95JP9dKT5Fc0Y49f5rcDurOtmtvm5OQSFbL9cgdfMgoUX o8FofI4W8guUfvr9zmXMH7Z3LDzYU4+ZAgVAp17Ohva2gazGlNdxhSais5SpuK3LqRRYu1mqHyKsH vxEEBAmnun0Z7W9r9gVy6P/fRezRMp9MFhQ40WtnVdW2eojA36jWJdW817NHdWIpKebTj4SVRVRJf WZgl10XGb40qEsEmFLDQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rahIU-0000000HTdj-2mHo; Thu, 15 Feb 2024 19:21:26 +0000 Received: from sin.source.kernel.org ([145.40.73.55]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rahIR-0000000HTc2-0p3t for linux-arm-kernel@lists.infradead.org; Thu, 15 Feb 2024 19:21:25 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id 1FA8CCE1C49; Thu, 15 Feb 2024 19:21:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 852F2C433F1; Thu, 15 Feb 2024 19:21:15 +0000 (UTC) Date: Thu, 15 Feb 2024 19:21:13 +0000 From: Catalin Marinas To: Ryan Roberts Cc: Will Deacon , Ard Biesheuvel , Marc Zyngier , James Morse , Andrey Ryabinin , Andrew Morton , Matthew Wilcox , Mark Rutland , David Hildenbrand , Kefeng Wang , John Hubbard , Zi Yan , Barry Song <21cnbao@gmail.com>, Alistair Popple , Yang Shi , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , linux-arm-kernel@lists.infradead.org, x86@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v6 10/18] arm64/mm: New ptep layer to manage contig bit Message-ID: References: <20240215103205.2607016-1-ryan.roberts@arm.com> <20240215103205.2607016-11-ryan.roberts@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20240215103205.2607016-11-ryan.roberts@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240215_112123_418735_ED159B84 X-CRM114-Status: GOOD ( 14.35 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Feb 15, 2024 at 10:31:57AM +0000, Ryan Roberts wrote: > Create a new layer for the in-table PTE manipulation APIs. For now, The > existing API is prefixed with double underscore to become the > arch-private API and the public API is just a simple wrapper that calls > the private API. > > The public API implementation will subsequently be used to transparently > manipulate the contiguous bit where appropriate. But since there are > already some contig-aware users (e.g. hugetlb, kernel mapper), we must > first ensure those users use the private API directly so that the future > contig-bit manipulations in the public API do not interfere with those > existing uses. > > The following APIs are treated this way: > > - ptep_get > - set_pte > - set_ptes > - pte_clear > - ptep_get_and_clear > - ptep_test_and_clear_young > - ptep_clear_flush_young > - ptep_set_wrprotect > - ptep_set_access_flags > > Tested-by: John Hubbard > Signed-off-by: Ryan Roberts Acked-by: Catalin Marinas _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel