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[2620:137:e000::1:20]) by mx.google.com with ESMTP id r4-20020a056402034400b0042b633ca6besi2950374edw.551.2022.06.08.22.25.01; Wed, 08 Jun 2022 22:25:26 -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=@infradead.org header.s=bombadil.20210309 header.b=kyhL2c0f; 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 S237936AbiFIFGH (ORCPT + 99 others); Thu, 9 Jun 2022 01:06:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52098 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230077AbiFIFGF (ORCPT ); Thu, 9 Jun 2022 01:06:05 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 27C1126522A for ; Wed, 8 Jun 2022 22:06:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=lSjKiwGQP2bLdZmsJuNaLJfxZDGjC6fCq2g/NdyMPNA=; b=kyhL2c0fixHav+CSRIiyWMtFN7 AtDNsnF/9FvWJ9TIx9fua/CrNv5rR8a9O7oji3ME60GbokDgdhgvD0ea2XdXEW/L1DOT//y9eaYzo JnuI00fO4ezPxNMBvHkQYYI5xIPoHzR9wnf4anfLqVEwyENKdzkr/7GIIOrh15zyrv+YMfLMdP9s5 6Rvc7JdDtTpL7W2pcS0iqoBpYYs8PLlaD0HauJabPoVr7WpXOlJQlGsGN0JStdxSNMixCdQE7blhE RaUJDr2rfJW4kg5HofoJ8jqgC2HUgKr4MOCFxVgU1Mt6OJy/VvcugFl1p5U4yhYTwg9+HBWpohhZ5 n20MR6mw==; Received: from hch by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1nzAMl-00Gn4g-0a; Thu, 09 Jun 2022 05:05:55 +0000 Date: Wed, 8 Jun 2022 22:05:54 -0700 From: Christoph Hellwig To: Dongli Zhang Cc: iommu@lists.linux-foundation.org, xen-devel@lists.xenproject.org, x86@kernel.org, linuxppc-dev@lists.ozlabs.org, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, hch@infradead.org, m.szyprowski@samsung.com, jgross@suse.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, sstabellini@kernel.org, mpe@ellerman.id.au, konrad.wilk@oracle.com, mst@redhat.com, jasowang@redhat.com, joe.jin@oracle.com Subject: Re: [PATCH RFC v1 4/7] swiotlb: to implement io_tlb_high_mem Message-ID: References: <20220609005553.30954-1-dongli.zhang@oracle.com> <20220609005553.30954-5-dongli.zhang@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220609005553.30954-5-dongli.zhang@oracle.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_NONE,T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED 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 All this really needs to be hidden under the hood.