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12:11:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CAC7DC341C7; Tue, 5 Jul 2022 12:11:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1657023083; bh=xx894h8t9r1HogxTqBUnJmpp/M0AqILhNb+ZPL3THQI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=uNgKo6jhuJULh+DvqMhsjgsekzUkkZNVWMvDYYA7ntWZLbKRAdWvfd+gACcAYbp0I dCQCNLJmnQuguvCTAzBvi6G5wQv44m2QfmvRb2BRJ1mOts4bwJQwzBW9LmPZMWM0v9 KgqYBmAWhJHn6XGLqhd8L1t+BwyQKfVps44h0Y+N96Wn/9LVV2/F0Y8uD9V2VHh7tY wBPuTJioL8OeAgSd2sS1zNyh5XfOu6vwDuShC/LKO/6ERm4BT02FcEZpdi/RAhMrUb cYkBHwYGzp5iKewKqfrHyOoieY6FijI/hjrGVShMSwM0qHUq6S8DcrbG9px0DirWPK NxoDdLggB8MEg== Date: Tue, 5 Jul 2022 13:11:16 +0100 From: Will Deacon To: "guanghui.fgh" Cc: Ard Biesheuvel , baolin.wang@linux.alibaba.com, catalin.marinas@arm.com, akpm@linux-foundation.org, david@redhat.com, jianyong.wu@arm.com, james.morse@arm.com, quic_qiancai@quicinc.com, christophe.leroy@csgroup.eu, jonathan@marek.ca, mark.rutland@arm.com, thunder.leizhen@huawei.com, anshuman.khandual@arm.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, rppt@kernel.org, geert+renesas@glider.be, linux-mm@kvack.org, yaohongbo@linux.alibaba.com, alikernel-developer@linux.alibaba.com Subject: Re: [PATCH v4] arm64: mm: fix linear mem mapping access performance degradation Message-ID: <20220705121115.GB1012@willie-the-truck> References: <20220704111402.GA31553@willie-the-truck> <4accaeda-572f-f72d-5067-2d0999e4d00a@linux.alibaba.com> <20220704131516.GC31684@willie-the-truck> <2ae1cae0-ee26-aa59-7ed9-231d67194dce@linux.alibaba.com> <20220704142313.GE31684@willie-the-truck> <6977c692-78ca-5a67-773e-0389c85f2650@linux.alibaba.com> <20220704163815.GA32177@willie-the-truck> <20220705095231.GB552@willie-the-truck> <5d044fdd-a61a-d60f-d294-89e17de37712@linux.alibaba.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <5d044fdd-a61a-d60f-d294-89e17de37712@linux.alibaba.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220705_051126_023770_786E1AA0 X-CRM114-Status: GOOD ( 39.17 ) 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="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gVHVlLCBKdWwgMDUsIDIwMjIgYXQgMDg6MDc6MDdQTSArMDgwMCwgZ3VhbmdodWkuZmdoIHdy b3RlOgo+IAo+IAo+IOWcqCAyMDIyLzcvNSAxNzo1MiwgV2lsbCBEZWFjb24g5YaZ6YGTOgo+ID4g T24gTW9uLCBKdWwgMDQsIDIwMjIgYXQgMDc6MDk6MjNQTSArMDIwMCwgQXJkIEJpZXNoZXV2ZWwg d3JvdGU6Cj4gPiA+IE9uIE1vbiwgNCBKdWwgMjAyMiBhdCAxODozOCwgV2lsbCBEZWFjb24gPHdp bGxAa2VybmVsLm9yZz4gd3JvdGU6Cj4gPiA+ID4gCj4gPiA+ID4gT24gTW9uLCBKdWwgMDQsIDIw 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