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 684A6C433F5 for ; Sat, 9 Apr 2022 09:19:13 +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=9sNKUw+k18GRIi8dbEwPMJXDploO2kueb1jatEQNpQE=; b=PRpenNt31FGfQV NzfiSw3rq/iolWawSPx6nWI5bTfZ2MO+4znuSanXBScHa428tqYf9zLf4a5gUk+8xafBiSloOM8v7 jjHo60JK6TOvnc5dMCXauJgY/u21diGroUrW8E1VShoW/LGtwHScyPVIFfqnKQx8yNUHAZShJDV7b L4dvIgR42IVLTkcPjgiN+wIZ9bxnzK6vFzEoVjnGzBL46/iyxM5wYpcSd0WnJAuUrrOx+f63S+UYn 0YaP36HMt7u4SWNxdkbfd+hbtHB8+85tATZXJcqf9qoncwKhJZsRKY5tadbfl9CYhoTVqf1rOKfMa Lsv/b5OxaJFqGC8zBQTw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nd7EF-002g8Z-LD; Sat, 09 Apr 2022 09:17:59 +0000 Received: from szxga01-in.huawei.com ([45.249.212.187]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nd7EB-002g4g-V1 for linux-arm-kernel@lists.infradead.org; Sat, 09 Apr 2022 09:17:58 +0000 Received: from kwepemi100007.china.huawei.com (unknown [172.30.72.56]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4Kb8dg56shzdZXd; Sat, 9 Apr 2022 17:17:11 +0800 (CST) Received: from kwepemm600017.china.huawei.com (7.193.23.234) by kwepemi100007.china.huawei.com (7.221.188.115) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Sat, 9 Apr 2022 17:17:42 +0800 Received: from [10.174.179.234] (10.174.179.234) by kwepemm600017.china.huawei.com (7.193.23.234) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Sat, 9 Apr 2022 17:17:41 +0800 Message-ID: <8ef7a71b-fd0d-f86e-98bc-0a9cffc79207@huawei.com> Date: Sat, 9 Apr 2022 17:17:40 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.6.1 Subject: Re: [RFC PATCH -next V2 5/7] arm64: add get_user to machine check safe To: Mark Rutland CC: Andrew Morton , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , Catalin Marinas , Will Deacon , Alexander Viro , , "H. Peter Anvin" , , , References: <20220406091311.3354723-1-tongtiangen@huawei.com> <20220406091311.3354723-6-tongtiangen@huawei.com> From: Tong Tiangen In-Reply-To: X-Originating-IP: [10.174.179.234] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemm600017.china.huawei.com (7.193.23.234) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220409_021756_365430_389FDDED X-CRM114-Status: GOOD ( 20.60 ) 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 CgrlnKggMjAyMi80LzggMjM6MjIsIE1hcmsgUnV0bGFuZCDlhpnpgZM6Cj4gT24gVGh1LCBBcHIg MDcsIDIwMjIgYXQgMTA6Mzg6MDRQTSArMDgwMCwgVG9uZyBUaWFuZ2VuIHdyb3RlOgo+PiDlnKgg MjAyMi80LzYgMTk6MjIsIE1hcmsgUnV0bGFuZCDlhpnpgZM6Cj4+PiBPbiBXZWQsIEFwciAwNiwg MjAyMiBhdCAwOToxMzowOUFNICswMDAwLCBUb25nIFRpYW5nZW4gd3JvdGU6Cj4+Pj4gQWRkIHNj ZW5hcmlvcyBnZXRfdXNlciB0byBtYWNoaW5lIGNoZWNrIHNhZmUuIFRoZSBwcm9jZXNzaW5nIG9m Cj4+Pj4gRVhfVFlQRV9VQUNDRVNTX0VSUl9aRVJPIGFuZCBFWF9UWVBFX1VBQ0NFU1NfRVJSX1pF Uk9fVUNFX1JFQ09WRVJZIGlzIHNhbWUKPj4+PiBhbmQgYm90aCByZXR1cm4gLUVGQVVMVC4KPj4+ Cj4+PiBXaGljaCB1YWNjZXNzIGNhc2VzIGRvIHdlIGV4cGVjdCB0byAqbm90KiBiZSByZWNvdmVy YWJsZT8KPj4+Cj4+PiBOYWl2ZWx5IEkgd291bGQgYXNzdW1lIHRoYXQgaWYgd2UncmUgZ29pbmcg dG8gdHJlYXQgYSBtZW1vcnkgZXJyb3Igb24gYSB1YWNjZXNzCj4+PiBhcyBmYXRhbCB0byB1c2Vy c3BhY2Ugd2Ugc2hvdWxkIGJlIGFibGUgdG8gZG8gdGhhdCBmb3IgKmFueSogdWFjZXNzZXMuCj4+ Pgo+Pj4gVGhlIGNvbW1pdCBtZXNzYWdlIHNob3VsZCBleHBsYWluIHdoeSB3ZSBuZWVkIHRoZSBk aXN0aW5jdGlvbiBiZXR3ZWVuIGEKPj4+IHJlY292ZXJhYmxlIHVhY2Nlc3MgYW5kIGEgbm9uLXJl Y292ZXJhYmxlIHVhY2Nlc3MuCj4+Pgo+Pj4gVGhhbmtzLAo+Pj4gTWFyay4KPj4KPj4gQ3VycmVu dGx5LCBhbnkgbWVtb3J5IGVycm9yIGNvbnN1bWVkIGluIGtlcm5lbCBtb2RlIHdpbGwgbGVhZCB0 byBwYW5pYwo+PiAoZG9fc2VhKCkpLgo+Pgo+PiBNeSBpZGVhIGlzIHRoYXQgbm90IGFsbCBtZW1v cnkgZXJyb3JzIGNvbnN1bWVkIGluIGtlcm5lbCBtb2RlIGFyZSBmYXRhbCwKPj4gc3VjaCBhcyBj b3B5XyBmcm9tXyB1c2VyL2dldF8gdXNlciBpcyBhIG1lbW9yeSBlcnJvciBjb25zdW1lZCB3aGVu Cj4+IHJlYWRpbmcgdXNlciBkYXRhIGluIHRoZSBwcm9jZXNzIGNvbnRleHQuIEluIHRoaXMgY2Fz ZSwgd2UgY2FuIG5vdCBsZXQgdGhlCj4+IGtlcm5lbCBwYW5pYywganVzdCBraWxsIHRoZSBwcm9j ZXNzIHdpdGhvdXQgYWZmZWN0aW5nIHRoZSBvcGVyYXRpb24KPj4gb2YgdGhlIHN5c3RlbS4KPiAK PiBJIHVuZGVyc3Rvb2QgdGhpcyBwYXJ0Lgo+IAo+PiBIb3dldmVyLCBub3QgYWxsIHVhY2Nlc3Mg Y2FuIGJlIHJlY292ZXJlZCB3aXRob3V0IGFmZmVjdGluZyB0aGUgbm9ybWFsCj4+IG9wZXJhdGlv biBvZiB0aGUgc3lzdGVtLiBUaGUga2V5IGlzIG5vdCB3aGV0aGVyIGl0IGlzIHVhY2Nlc3MsIGJ1 dCB3aGV0aGVyCj4+IHRoZXJlIGFyZSBrZXkgZGF0YSBhZmZlY3RpbmcgdGhlIG5vcm1hbCBvcGVy YXRpb24gb2YgdGhlIHN5c3RlbSBpbiB0aGUgcmVhZAo+PiBwYWdlLgo+IAo+IE9rLiBDYW4geW91 IGdpdmUgYW4gZXhhbXBsZSBvZiBzdWNoIGEgY2FzZSB3aGVyZSB0aGUgYSB1YWNjZXNzIHRoYXQg aGl0cwo+IGEgbWVtb3J5IGVycm9yIG11c3QgYmUgZmF0YWw/Cj4gCj4gSSB0aGluayB5b3UgbWln aHQgYmUgdHJ5aW5nIHRvIHNheSB0aGF0IGZvciBjb3B5X3t0byxmcm9tfV91c2VyKCkgd2UgY2Fu Cj4gbWFrZSB0aGF0IGp1ZGdlbWVudCwgYnV0IHRob3NlIGFyZSBjb21iaW5lZCB1c2VyK2tlcm5l bCBhY2Nlc3MKPiBwcmltaXRpdmVzLCBhbmQgdGhlICp1YWNjZXNzKiBwYXJ0IHNob3VsZCBuZXZl ciBiZSByZWFkaW5nIGZyb20gYSBwYWdlCj4gd2l0aCAia2V5IGRhdGEgYWZmZWN0aW5nIHRoZSBu b3JtYWwgb3BlcmF0aW9uIG9mIHRoZSBzeXN0ZW0iLCBzaW5jZQo+IHRoYXQncyB1c2Vyc3BhY2Ug bWVtb3J5Lgo+IAo+IElzIHRoZXJlIGFueSAqdXNlcnNwYWNlIGFjY2VzcyogKGUuZy4gd2hlcmUg d2UgdXNlIExEVFIvU1RUUiB0b2RheSkKPiB3aGVyZSB3ZSBtdXN0IHRyZWF0IGEgbWVtb3J5IGVy cm9yIGFzIGZhdGFsIHRvIHRoZSBzeXN0ZW0/Cj4gCj4gVGhhbmtzLAo+IE1hcmsuCj4gLgoKSSBz ZWVtIHRvIHVuZGVyc3RhbmQgd2hhdCB5b3UgbWVhbi4KVGFrZSBjb3B5X3RvX3VzZXIoKS9wdXRf dXNlcigpIGFzIGFuIGV4YW1wbGUuIElmIGl0IGVuY291bnRlcnMgbWVtb3J5IAplcnJvciwgb25s eSByZWxhdGVkIHByb2Nlc3NlcyB3aWxsIGJlIGFmZmVjdGVkLiBBY2NvcmRpbmcgdG8gdGhpcyAK dW5kZXJzdGFuZGluZywgaXQgc2VlbXMgdGhhdCBhbGwgdWFjY2VzcyBjYW4gYmUgcmVjb3ZlcmVk LgoKVGhhbmtzLApUb25nLgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX18KbGludXgtYXJtLWtlcm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBs aXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlz dGluZm8vbGludXgtYXJtLWtlcm5lbAo=