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 217C7C4332F for ; Tue, 15 Nov 2022 06:46:01 +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-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To:Subject: MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=XCsdfxxfJxyv0ndzPL113IfNldc+as1+8v4DzpRR/e4=; b=MQNePNkHCBowgl OTsKFpfYkmIY5xG63NTNskzaube4ys4uJ0ts5GUdbHN/PcRgFFqlIS8YFIgcxl6uv/RpWhUTbLZcn Ir5OHiTyAMOzhLuqtll7oIx5ACU1LvWlrMIc2laWFUuiBV+mv3NuOUVkmoRNXSJNUKFuywXsuwxu/ rjmS3Vt+Vq5fHREHs7IaXvYtTXSTN4Cafm7OpvS0gJ8AH7UDPZASw/1SwMsR4VfY20ZPIMQVNC0ix pKmlNtx7/nW3P47HtMMASgwRiARxYH1cuzGaNOLFJluUcDMvd1V+5NqWSsE85TWK8fl6+y1BCAntC KuqRdiTEz9VinK65egWA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oupgn-008Glr-4N; Tue, 15 Nov 2022 06:44:57 +0000 Received: from out30-130.freemail.mail.aliyun.com ([115.124.30.130]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oupgk-008GkD-6B; Tue, 15 Nov 2022 06:44:56 +0000 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R271e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018046056;MF=xhao@linux.alibaba.com;NM=1;PH=DS;RN=31;SR=0;TI=SMTPD_---0VUsFbJs_1668494685; Received: from 30.240.98.93(mailfrom:xhao@linux.alibaba.com fp:SMTPD_---0VUsFbJs_1668494685) by smtp.aliyun-inc.com; Tue, 15 Nov 2022 14:44:48 +0800 Message-ID: Date: Tue, 15 Nov 2022 14:44:44 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.4.1 Subject: Re: [PATCH v6 1/2] mm/tlbbatch: Introduce arch_tlbbatch_should_defer() To: Yicong Yang , akpm@linux-foundation.org, linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, catalin.marinas@arm.com, will@kernel.org, anshuman.khandual@arm.com, linux-doc@vger.kernel.org Cc: corbet@lwn.net, peterz@infradead.org, arnd@arndb.de, punit.agrawal@bytedance.com, linux-kernel@vger.kernel.org, darren@os.amperecomputing.com, yangyicong@hisilicon.com, huzhanyuan@oppo.com, lipeifeng@oppo.com, zhangshiming@oppo.com, guojian@oppo.com, realmz6@gmail.com, linux-mips@vger.kernel.org, openrisc@lists.librecores.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, Barry Song <21cnbao@gmail.com>, wangkefeng.wang@huawei.com, prime.zeng@hisilicon.com, Anshuman Khandual , Barry Song References: <20221115031425.44640-1-yangyicong@huawei.com> <20221115031425.44640-2-yangyicong@huawei.com> From: haoxin In-Reply-To: <20221115031425.44640-2-yangyicong@huawei.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221114_224454_420657_B38A6510 X-CRM114-Status: GOOD ( 16.22 ) 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-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org CuWcqCAyMDIyLzExLzE1IOS4iuWNiDExOjE0LCBZaWNvbmcgWWFuZyDlhpnpgZM6Cj4gRnJvbTog QW5zaHVtYW4gS2hhbmR1YWwgPGtoYW5kdWFsQGxpbnV4LnZuZXQuaWJtLmNvbT4KPgo+IFRoZSBl bnRpcmUgc2NoZW1lIG9mIGRlZmVycmVkIFRMQiBmbHVzaCBpbiByZWNsYWltIHBhdGggcmVzdHMg b24gdGhlCj4gZmFjdCB0aGF0IHRoZSBjb3N0IHRvIHJlZmlsbCBUTEIgZW50cmllcyBpcyBsZXNz IHRoYW4gZmx1c2hpbmcgb3V0Cj4gaW5kaXZpZHVhbCBlbnRyaWVzIGJ5IHNlbmRpbmcgSVBJIHRv IHJlbW90ZSBDUFVzLiBCdXQgYXJjaGl0ZWN0dXJlCj4gY2FuIGhhdmUgZGlmZmVyZW50IHdheXMg dG8gZXZhbHVhdGUgdGhhdC4gSGVuY2UgYXBhcnQgZnJvbSBjaGVja2luZwo+IFRUVV9CQVRDSF9G TFVTSCBpbiB0aGUgVFRVIGZsYWdzLCByZXN0IG9mIHRoZSBkZWNpc2lvbiBzaG91bGQgYmUKPiBh cmNoaXRlY3R1cmUgc3BlY2lmaWMuCj4KPiBTaWduZWQtb2ZmLWJ5OiBBbnNodW1hbiBLaGFuZHVh bCA8a2hhbmR1YWxAbGludXgudm5ldC5pYm0uY29tPgo+IFtodHRwczovL2xvcmUua2VybmVsLm9y Zy9saW51eHBwYy1kZXYvMjAxNzExMDExMDE3MzUuMjMxOC0yLWtoYW5kdWFsQGxpbnV4LnZuZXQu aWJtLmNvbS9dCj4gU2lnbmVkLW9mZi1ieTogWWljb25nIFlhbmcgPHlhbmd5aWNvbmdAaGlzaWxp Y29uLmNvbT4KPiBbUmViYXNlIGFuZCBmaXggaW5jb3JyZWN0IHJldHVybiB2YWx1ZSB0eXBlXQo+ IFJldmlld2VkLWJ5OiBLZWZlbmcgV2FuZyA8d2FuZ2tlZmVuZy53YW5nQGh1YXdlaS5jb20+Cj4g UmV2aWV3ZWQtYnk6IEFuc2h1bWFuIEtoYW5kdWFsIDxhbnNodW1hbi5raGFuZHVhbEBhcm0uY29t Pgo+IFJldmlld2VkLWJ5OiBCYXJyeSBTb25nIDxiYW9odWFAa2VybmVsLm9yZz4KPiBUZXN0ZWQt Ynk6IFB1bml0IEFncmF3YWwgPHB1bml0LmFncmF3YWxAYnl0ZWRhbmNlLmNvbT4KPiAtLS0KPiAg IGFyY2gveDg2L2luY2x1ZGUvYXNtL3RsYmZsdXNoLmggfCAxMiArKysrKysrKysrKysKPiAgIG1t L3JtYXAuYyAgICAgICAgICAgICAgICAgICAgICAgfCAgOSArLS0tLS0tLS0KPiAgIDIgZmlsZXMg Y2hhbmdlZCwgMTMgaW5zZXJ0aW9ucygrKSwgOCBkZWxldGlvbnMoLSkKPgo+IGRpZmYgLS1naXQg YS9hcmNoL3g4Ni9pbmNsdWRlL2FzbS90bGJmbHVzaC5oIGIvYXJjaC94ODYvaW5jbHVkZS9hc20v dGxiZmx1c2guaAo+IGluZGV4IGNkYTMxMThmM2IyNy4uOGE0OTdkOTAyYzE2IDEwMDY0NAo+IC0t LSBhL2FyY2gveDg2L2luY2x1ZGUvYXNtL3RsYmZsdXNoLmgKPiArKysgYi9hcmNoL3g4Ni9pbmNs dWRlL2FzbS90bGJmbHVzaC5oCj4gQEAgLTI0MCw2ICsyNDAsMTggQEAgc3RhdGljIGlubGluZSB2 b2lkIGZsdXNoX3RsYl9wYWdlKHN0cnVjdCB2bV9hcmVhX3N0cnVjdCAqdm1hLCB1bnNpZ25lZCBs b25nIGEpCj4gICAJZmx1c2hfdGxiX21tX3JhbmdlKHZtYS0+dm1fbW0sIGEsIGEgKyBQQUdFX1NJ WkUsIFBBR0VfU0hJRlQsIGZhbHNlKTsKPiAgIH0KPiAgIAo+ICtzdGF0aWMgaW5saW5lIGJvb2wg YXJjaF90bGJiYXRjaF9zaG91bGRfZGVmZXIoc3RydWN0IG1tX3N0cnVjdCAqbW0pCj4gK3sKPiAr CWJvb2wgc2hvdWxkX2RlZmVyID0gZmFsc2U7Cj4gKwo+ICsJLyogSWYgcmVtb3RlIENQVXMgbmVl ZCB0byBiZSBmbHVzaGVkIHRoZW4gZGVmZXIgYmF0Y2ggdGhlIGZsdXNoICovCj4gKwlpZiAoY3B1 bWFza19hbnlfYnV0KG1tX2NwdW1hc2sobW0pLCBnZXRfY3B1KCkpIDwgbnJfY3B1X2lkcykKPiAr CQlzaG91bGRfZGVmZXIgPSB0cnVlOwo+ICsJcHV0X2NwdSgpOwo+ICsKPiArCXJldHVybiBzaG91 bGRfZGVmZXI7Cj4gK30KPiArCj4gICBzdGF0aWMgaW5saW5lIHU2NCBpbmNfbW1fdGxiX2dlbihz dHJ1Y3QgbW1fc3RydWN0ICptbSkKPiAgIHsKPiAgIAkvKgo+IGRpZmYgLS1naXQgYS9tbS9ybWFw LmMgYi9tbS9ybWFwLmMKPiBpbmRleCAyZWM5MjVlNWZhNmEuLmE5YWIxMGJjMDE0NCAxMDA2NDQK PiAtLS0gYS9tbS9ybWFwLmMKPiArKysgYi9tbS9ybWFwLmMKPiBAQCAtNjg1LDE3ICs2ODUsMTAg QEAgc3RhdGljIHZvaWQgc2V0X3RsYl91YmNfZmx1c2hfcGVuZGluZyhzdHJ1Y3QgbW1fc3RydWN0 ICptbSwgYm9vbCB3cml0YWJsZSkKPiAgICAqLwo+ICAgc3RhdGljIGJvb2wgc2hvdWxkX2RlZmVy X2ZsdXNoKHN0cnVjdCBtbV9zdHJ1Y3QgKm1tLCBlbnVtIHR0dV9mbGFncyBmbGFncykKPiAgIHsK PiAtCWJvb2wgc2hvdWxkX2RlZmVyID0gZmFsc2U7Cj4gLQo+ICAgCWlmICghKGZsYWdzICYgVFRV X0JBVENIX0ZMVVNIKSkKPiAgIAkJcmV0dXJuIGZhbHNlOwo+ICAgCj4gLQkvKiBJZiByZW1vdGUg Q1BVcyBuZWVkIHRvIGJlIGZsdXNoZWQgdGhlbiBkZWZlciBiYXRjaCB0aGUgZmx1c2ggKi8KPiAt CWlmIChjcHVtYXNrX2FueV9idXQobW1fY3B1bWFzayhtbSksIGdldF9jcHUoKSkgPCBucl9jcHVf aWRzKQo+IC0JCXNob3VsZF9kZWZlciA9IHRydWU7Cj4gLQlwdXRfY3B1KCk7Cj4gLQo+IC0JcmV0 dXJuIHNob3VsZF9kZWZlcjsKPiArCXJldHVybiBhcmNoX3RsYmJhdGNoX3Nob3VsZF9kZWZlciht bSk7Cj4gICB9Cj4gICAKTEdUTSwgdGhhbmtzCgpSZXZpZXdlZC1ieTogWGluIEhhbyA8eGhhb0Bs aW51eC5hbGliYWJhLmNvbT4KPiAgIC8qCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fXwpsaW51eC1hcm0ta2VybmVsIG1haWxpbmcgbGlzdApsaW51eC1hcm0t a2VybmVsQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFp bG1hbi9saXN0aW5mby9saW51eC1hcm0ta2VybmVsCg==