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 CAFE4C00A8F for ; Tue, 24 Oct 2023 06:56:22 +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=uwbfI4ljQ5HMZit/CEjPF6cOCvI4BWpw3LUivk1UTiI=; b=bMdr6wrIAxjFkN 3hP7yNVSxFDOSWt4vFFRM9lYzmQRD3CGmVosmBiCdr83xFw7eMhklOqOqaZ5kKbQeHjjwPNLtHubH ItLWqjmbzMUJljWmcAnIqDpWwzxCjp61ETpXdhstgMYVGUnxmSK01XCCnk2ZyQtbN4o+XU8LhST8r Ebs13b2l9FokOe9Zenb1XlOqoWLhoHYolWbDjAtcXNULgiDPBwE9Mg5m8OX+rAayjA5TGuigDxMuw TwOTiPTqeB9z7UtXT/EhTs0LwonqA4wD0VYu16/XgnbuBXdiMgMNAZJoIeI0Gir/zwN76/GzazAR3 Lq5oHYUYqs3bUZTwHEIw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qvBKX-0091So-12; Tue, 24 Oct 2023 06:55:57 +0000 Received: from out-193.mta0.migadu.com ([91.218.175.193]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qvBKU-0091SD-2c for linux-arm-kernel@lists.infradead.org; Tue, 24 Oct 2023 06:55:56 +0000 Date: Tue, 24 Oct 2023 06:55:46 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1698130551; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=ani9tjwXCMqwfG+gvxfOFcps5nAcAgknn7Pxf7zjmuA=; b=r5WrslbEox4Zdz0GckPoMWpsESEGuTrFA4WkkvpD1uSwtavxE0NupO8PRieNd2Zeyf2Iqe sxdeSVzyjGC+peYvOmTqg6WyTUMMSYe8IZWo4jnVwfdVTaQsd1eu+CtduzPxsBJ+NuKifK QWP0gdbA3uhwrmjzW1UaY+XssYzM3vM= X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Oliver Upton To: Ard Biesheuvel Cc: linux-arm-kernel@lists.infradead.org, Ard Biesheuvel , Catalin Marinas , Will Deacon , Marc Zyngier , Mark Rutland , Ryan Roberts , Anshuman Khandual , Kees Cook , Joey Gouly Subject: Re: [PATCH v4 56/61] arm64: kvm: avoid CONFIG_PGTABLE_LEVELS for runtime levels Message-ID: References: <20230912141549.278777-63-ardb@google.com> <20230912141549.278777-119-ardb@google.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20230912141549.278777-119-ardb@google.com> X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231023_235555_021430_22EF315B X-CRM114-Status: UNSURE ( 9.49 ) X-CRM114-Notice: Please train this message. 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 Tue, Sep 12, 2023 at 02:16:46PM +0000, Ard Biesheuvel wrote: > From: Ard Biesheuvel > > get_user_mapping_size() uses vabits_actual and CONFIG_PGTABLE_LEVELS to > provide the starting point for a table walk. This is fine for LVA, as > the number of translation levels is the same regardless of whether LVA > is enabled. However, with LPA2, this will no longer be the case, so > let's derive the number of levels from the number of VA bits directly. > > Signed-off-by: Ard Biesheuvel Acked-by: Oliver Upton -- Thanks, Oliver _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel