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[2620:137:e000::1:20]) by mx.google.com with ESMTP id z14-20020a170902d54e00b001766eb94746si3648031plf.520.2022.09.07.06.12.47; Wed, 07 Sep 2022 06:12:58 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@8bytes.org header.s=default header.b=Tz6Vv6G7; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230111AbiIGMTJ (ORCPT + 99 others); Wed, 7 Sep 2022 08:19:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55720 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229932AbiIGMTI (ORCPT ); Wed, 7 Sep 2022 08:19:08 -0400 Received: from mail.8bytes.org (mail.8bytes.org [85.214.250.239]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 74DF9B81F9 for ; Wed, 7 Sep 2022 05:19:07 -0700 (PDT) Received: from 8bytes.org (p4ff2bb62.dip0.t-ipconnect.de [79.242.187.98]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mail.8bytes.org (Postfix) with ESMTPSA id 239A624000A; Wed, 7 Sep 2022 14:19:06 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=8bytes.org; s=default; t=1662553146; bh=UL8stE99xSrCXZrjqPgS+K5txYBsAqspCdTFQkef41o=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Tz6Vv6G7FBC5TmlIW2Joc3NahiRksRLP/D4D981/yFMpYklDDSmvD4YIOM7lWV9Rg GVu+8xVrouziMnS6PhvEe6X8TrKudzt7YPnq5rptwtE7aSQWFyq0clp1CahosFkOPO HDTHqthN0xS3+oUVpuge6DctddHFxaf48TVQv8qk089KF38QE18bL1ZV8V9gnlrWw9 eKgf3/C6f0IHQD9+NZSdyat/AnTS7u5nFP1nl1MkQSdwCb8wHooF/uIbrs6mR56wL3 voE+wGSrx0765ZljjFaeA5amf1Bx68SRXK+s1AqV48m33jMA0UPQBfi6JlE9drjPCV g2G+cQQ8Uaubg== Date: Wed, 7 Sep 2022 14:19:04 +0200 From: Joerg Roedel To: Robin Murphy Cc: will@kernel.org, iommu@lists.linux.dev, subkhankulov@ispras.ru, khoroshilov@ispras.ru, linux-kernel@vger.kernel.org Subject: Re: [PATCH] iommu/io-pgtable-arm: Remove iommu_dev==NULL special case Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Aug 15, 2022 at 05:15:55PM +0100, Robin Murphy wrote: > The special case to allow iommu_dev==NULL in __arm_lpae_alloc_pages() is > confusing to static checkers (and possibly readers in general), since > it's not obvious that that is only intended for the selftests. However > it only serves to get around the dev_to_node() call, and we can easily > fake up enough to make that work anyway, so let's simply remove this > consideration from the normal flow and punt the responsibility over to > the test harness itself. > > Reported-by: Rustam Subkhankulov > Signed-off-by: Robin Murphy Applied, thanks.