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 115F5EE4996 for ; Tue, 22 Aug 2023 09:59:24 +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=B8UVh6qkZyJtKoaIrAW6/TjutucrOv9ZX0acdTXMnrM=; b=LMnIcvcra+Tuag i9TABpkNLk6qOw5yh1RY04oj05uxf9hu7nyNGbTruPYZHwYDqB4qV95+cjLbfYCstSMQmV/h6qVWt v30TqSzhoVsj2yTSsOd4jJX2raCbrtY5ZlksatJIBMbKpc2nzyTaOEureyqmbyEBNqWEWNw5ngY8u Aqx1J69Hukn/mDowZ8DPjNnCsIckLPL59K8jyePZRMNLtb3y6IQ4YMk+gT8gwqg4vg8uxuuRv/pz/ kpStn0+ZzomBkbpQsFXVymWAhOKnKk/zWPnfjf3DgA/hsG/Cyv4JGJzLHroC7MhiuxH+1znXBRL2m CkbPLbHFAFGvooHVWr1A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qYOA4-00FaVT-38; Tue, 22 Aug 2023 09:58:56 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qYOA2-00FaUj-0F for linux-arm-kernel@lists.infradead.org; Tue, 22 Aug 2023 09:58:55 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 878D261A3D; Tue, 22 Aug 2023 09:58:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1659EC433C8; Tue, 22 Aug 2023 09:58:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1692698332; bh=sVhI0MwQkWiaY9ZR0rZ894LsScW3MR+I1sFldvIieKA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Gb6SCw3ct7+U5PyNUDKDZtox3L7LrfOJa1QWQ3ZpygAuiBicNU2/d0m8v24Z6Jvbq 9IFtI5hEOvJUS5dL0nxlcGMF5cTmSf0H/km9MtFvhOVXh4ucX4bmcmlJZ+d9GF4bhe 6itsB4aIKQIQlPmWLZhCJ6kxdNsnwrM3NEsimqsweAW2fJ+9C9Owyocd7fJJPpNSaN UNTMnfrKZW5/9wvHbqgflwKPoIq508SUYHL3psSxMFKnmwOFPWEx5Y7TUgRTWrPfpy xRx4zY+IrOEFkTCftINpvLLEYe6m78IeZduMtnx/7kk3ruy7OznYnuMOunCxjaWfSY mf5214Q5Exa2w== Date: Tue, 22 Aug 2023 10:58:47 +0100 From: Will Deacon To: Andrew Morton Cc: Qi Zheng , Qi Zheng , catalin.marinas@arm.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, muchun.song@linux.dev, pasha.tatashin@soleen.com, wangkefeng.wang@huawei.co Subject: Re: [PATCH] arm64: mm: use ptep_clear() instead of pte_clear() in clear_flush() Message-ID: <20230822095847.GA20667@willie-the-truck> References: <20230810093241.1181142-1-qi.zheng@linux.dev> <20230811110311.GB6993@willie-the-truck> <20230811112107.GE6993@willie-the-truck> <20230821132119.110668fde87a29443f0bff28@linux-foundation.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20230821132119.110668fde87a29443f0bff28@linux-foundation.org> 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-20230822_025854_154047_B47B9A9A X-CRM114-Status: GOOD ( 24.99 ) 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 T24gTW9uLCBBdWcgMjEsIDIwMjMgYXQgMDE6MjE6MTlQTSAtMDcwMCwgQW5kcmV3IE1vcnRvbiB3 cm90ZToKPiBPbiBGcmksIDExIEF1ZyAyMDIzIDE5OjI4OjQxICswODAwIFFpIFpoZW5nIDx6aGVu Z3FpLmFyY2hAYnl0ZWRhbmNlLmNvbT4gd3JvdGU6Cj4gCj4gPiBXaWxsIERlYWNvbiA8d2lsbEBr ZXJuZWwub3JnPuS6jjIwMjPlubQ45pyIMTHml6Ug5ZGo5LqUMTk6MjHlhpnpgZPvvJoKPiA+IAo+ ID4gPiBPbiBGcmksIEF1ZyAxMSwgMjAyMyBhdCAwNzoxNjoyMFBNICswODAwLCBRaSBaaGVuZyB3 cm90ZToKPiA+ID4gPiAgICBXaWxsIERlYWNvbiA8WzFdd2lsbEBrZXJuZWwub3JnPuS6jjIwMjPl ubQ45pyIMTHml6Ug5ZGo5LqUMTk6MDPlhpnpgZPvvJoKPiA+ID4gPgo+ID4gPiA+ICAgICAgT24g VGh1LCBBdWcgMTAsIDIwMjMgYXQgMDk6MzI6NDFBTSArMDAwMCwgUWkgWmhlbmcgd3JvdGU6Cj4g PiA+ID4gICAgICA+IEZyb206IFFpIFpoZW5nIDxbMl16aGVuZ3FpLmFyY2hAYnl0ZWRhbmNlLmNv bT4KPiA+ID4gPiAgICAgID4KPiA+ID4gPiAgICAgID4gSW4gY2xlYXJfZmx1c2goKSwgdGhlIG9y aWdpbmFsIHB0ZSBtYXkgYmUgYSBwcmVzZW50IGVudHJ5LCBzbyB3ZQo+ID4gPiA+ICAgICAgc2hv dWxkCj4gPiA+ID4gICAgICA+IHVzZSBwdGVwX2NsZWFyKCkgdG8gbGV0IHBhZ2VfdGFibGVfY2hl Y2sgdHJhY2sgdGhlIHB0ZSBjbGVhcmluZwo+ID4gPiA+ICAgICAgb3BlcmF0aW9uLAo+ID4gPiA+ ICAgICAgPiBvdGhlcndpc2UgaXQgbWF5IGNhdXNlIGZhbHNlIHBvc2l0aXZlIGluIHN1YnNlcXVl bnQgc2V0X3B0ZV9hdCgpLgo+ID4gPiA+Cj4gPiA+ID4gICAgICBJc24ndCB0aGlzIHRydWUgZm9y IG1vc3QgdXNlcnMgb2YgcHRlX2NsZWFyKCk/IFRoZXJlIGFyZSBzb21lIGluIHRoZQo+ID4gPiA+ ICAgICAgY29yZQo+ID4gPiA+ICAgICAgY29kZSwgc28gY291bGQgdGhleSB0cmlnZ2VyIHRoZSBm YWxzZSBwb3NpdGl2ZSBhcyB3ZWxsPwo+ID4gPiA+Cj4gPiA+ID4gICAgTm8sIHRoZSBQVEUgZW50 cnkgaW4gb3RoZXIgcGxhY2VzIHdoZXJlIHB0ZV9jbGVhcigpIGlzIHVzZWQgaXMKPiA+ID4gbm9u LXByZXNlbnQKPiA+ID4gPiAgICBQVEUuCj4gPiA+ID4gICAgVGhlIHBhZ2VfdGFibGVfY2hlY2sg ZG9lcyBub3QgZG9lcyB0cmFjayB0aGUgcHRlIG9wZXJhdGlvbiBpbiB0aGlzCj4gPiA+IGNhc2Us Cj4gPiA+ID4gICAgc28gaXQgd2lsbCBub3QgY2F1c2UgZmFsc2UgcG9zaXRpdmVzLgo+ID4gPgo+ ID4gPiBBcmUgeW91IHN1cmU/IEZvciBleGFtcGxlLCB0aGUgY2FsbCBmcm9tIGZsdXNoX2FsbF96 ZXJvX3BrbWFwcygpIGluCj4gPiA+IGhpZ2htZW0uYyByZWFsbHkgbG9va3MgbGlrZSBpdCdzIGNs ZWFyaW5nIGEgdmFsaWQgZW50cnkuIE5vdCB0aGF0IGFybTY0Cj4gPiA+IGNhcmVzIGFib3V0IGhp Z2htZW0sIGJ1dCBzdGlsbC4KPiA+IAo+ID4gCj4gPiBBaCwgdGhpcyBpcyBpbml0X21tLCBub3Qg dXNlciBtbSwgcGFnZV90YWJsZV9jaGVjayBkb2VzIG5vdCBjYXJlIGFib3V0IHRoaXMKPiA+IGNh c2UuCj4gCj4gSXQncyB1bmNsZWFyIHdoZXJlIHdlIHN0YW5kIHdpdGggdGhpcyBwYXRjaC4gIEFu IGFjayBvciBhIG5hY2ssIHBsZWFzZT8KClNvcnJ5IEFuZHJldywgSSBzYXcgeW91J2QgcXVldWVk IGl0IHNvIEkgbWFya2VkIGl0IGFzICJkb25lIiBvbiBteSBsaXN0LiBJCnRoaW5rIGl0J3MgZmlu ZToKCkFja2VkLWJ5OiBXaWxsIERlYWNvbiA8d2lsbEBrZXJuZWwub3JnPgoKV2lsbAoKX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJtLWtlcm5l bCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6 Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5lbAo=