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 85537C43334 for ; Mon, 20 Jun 2022 09:11:48 +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=6DcBQBb07MoPVs+zFAwK8E8rfFGAb4vjb7H/EIN1jw0=; b=KJPS+heCaKcCoK 30MyeGrgEwtfsAOTqfCV3txshYDayAb0n+HrH5KD3CV9L3AQ0QwTmdRxq96gZRwODNAdEzGCFcTF4 ENYqRjW9zIbQVXxByceU4zys5qfe8M44t64DMwB8X8jtBtRTWTV6IQdySlSh8IlPMO9DS5ckMVJkf Ih2IiRzIDs1e4Z+LxmiHVZkAowZhfNuvPWUeXN8ZET0DKsykIXFizeIk39fvkKwcY7rK6E3Km8AGh S1oRfWZUFahAw2KMFpi6sQyfFLMXbuIUSLmi5LQi1lxEFZ/2maxY79rPbf1SBveSAYF2X9OeGD68O oZkk3rL5k9Ue4L9tfEWg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o3DQi-00H4ML-K7; Mon, 20 Jun 2022 09:10:44 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o3DQc-00H4K6-MI for linux-arm-kernel@lists.infradead.org; Mon, 20 Jun 2022 09:10:42 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id BF0A1113E; Mon, 20 Jun 2022 02:10:33 -0700 (PDT) Received: from FVFF77S0Q05N (unknown [10.57.70.167]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 2B72B3F7D7; Mon, 20 Jun 2022 02:10:30 -0700 (PDT) Date: Mon, 20 Jun 2022 10:10:23 +0100 From: Mark Rutland To: Tong Tiangen Cc: James Morse , Andrew Morton , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Robin Murphy , Dave Hansen , Catalin Marinas , Will Deacon , Alexander Viro , Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , x86@kernel.org, "H . Peter Anvin" , linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Kefeng Wang , Xie XiuQi , Guohanjun Subject: Re: [PATCH -next v5 2/8] arm64: extable: make uaaccess helper use extable type EX_TYPE_UACCESS_ERR_ZERO Message-ID: References: <20220528065056.1034168-1-tongtiangen@huawei.com> <20220528065056.1034168-3-tongtiangen@huawei.com> <4371a7c9-8766-9fee-2558-e6f43f06ad19@huawei.com> <0da734f3-5743-3df3-3f90-d92e5bd585ce@huawei.com> <684f0362-6e58-753d-32e1-112c6ffe6d12@huawei.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <684f0362-6e58-753d-32e1-112c6ffe6d12@huawei.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220620_021038_864031_1A50028B X-CRM114-Status: GOOD ( 37.08 ) 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 T24gTW9uLCBKdW4gMjAsIDIwMjIgYXQgMTA6NTk6MTJBTSArMDgwMCwgVG9uZyBUaWFuZ2VuIHdy b3RlOgo+IOWcqCAyMDIyLzYvMTggMjA6NDAsIE1hcmsgUnV0bGFuZCDlhpnpgZM6Cj4gPiBPbiBT YXQsIEp1biAxOCwgMjAyMiBhdCAwNDo0MjowNlBNICswODAwLCBUb25nIFRpYW5nZW4gd3JvdGU6 Cj4gPiA+ID4gPiA+IGRpZmYgLS1naXQgYS9hcmNoL2FybTY0L2luY2x1ZGUvYXNtL2FzbS1leHRh YmxlLmgKPiA+ID4gPiA+ID4gYi9hcmNoL2FybTY0L2luY2x1ZGUvYXNtL2FzbS1leHRhYmxlLmgK PiA+ID4gPiA+ID4gaW5kZXggNTZlYmUxODNlNzhiLi45Yzk0YWMxZjA4MmMgMTAwNjQ0Cj4gPiA+ ID4gPiA+IC0tLSBhL2FyY2gvYXJtNjQvaW5jbHVkZS9hc20vYXNtLWV4dGFibGUuaAo+ID4gPiA+ ID4gPiArKysgYi9hcmNoL2FybTY0L2luY2x1ZGUvYXNtL2FzbS1leHRhYmxlLmgKPiA+ID4gPiA+ ID4gQEAgLTI4LDYgKzI4LDE0IEBACj4gPiA+ID4gPiA+ICDCoMKgwqDCoMKgIF9fQVNNX0VYVEFC TEVfUkFXKFxpbnNuLCBcZml4dXAsIEVYX1RZUEVfRklYVVAsIDApCj4gPiA+ID4gPiA+ICDCoMKg wqDCoMKgIC5lbmRtCj4gPiA+ID4gPiA+ICsvKgo+ID4gPiA+ID4gPiArICogQ3JlYXRlIGFuIGV4 Y2VwdGlvbiB0YWJsZSBlbnRyeSBmb3IgdWFjY2VzcyBgaW5zbmAsIHdoaWNoCj4gPiA+ID4gPiA+ IHdpbGwgYnJhbmNoIHRvIGBmaXh1cGAKPiA+ID4gPiA+ID4gKyAqIHdoZW4gYW4gdW5oYW5kbGVk IGZhdWx0IGlzIHRha2VuLgo+ID4gPiA+ID4gPiArICogZXgtPmRhdGEgPSB+MCBtZWFucyBib3Ro IHJlZ19lcnIgYW5kIHJlZ196ZXJvIGlzIHNldCB0byB3enIoeDMxKS4KPiA+ID4gPiA+ID4gKyAq Lwo+ID4gPiA+ID4gPiArwqDCoMKgIC5tYWNyb8KgwqDCoMKgwqDCoMKgwqDCoCBfYXNtX2V4dGFi bGVfdWFjY2VzcywgaW5zbiwgZml4dXAKPiA+ID4gPiA+ID4gK8KgwqDCoCBfX0FTTV9FWFRBQkxF X1JBVyhcaW5zbiwgXGZpeHVwLCBFWF9UWVBFX1VBQ0NFU1NfRVJSX1pFUk8sIH4wKQo+ID4gPiA+ ID4gPiArwqDCoMKgIC5lbmRtCj4gPiA+ID4gPiAKPiA+ID4gPiA+IEknbSBub3QgdG9vIGtlZW4g b24gdXNpbmcgYH4wYCBoZXJlLCBzaW5jZSB0aGF0IGFsc28gc2V0cyBvdGhlciBiaXRzCj4gPiA+ ID4gPiBpbiB0aGUKPiA+ID4gPiA+IGRhdGEgZmllbGQsIGFuZCBpdHMgc29tZXdoYXQgb3BhcXVl Lgo+ID4gPiA+ID4gCj4gPiA+ID4gPiBIb3cgcGFpbmZ1bCBpcyBpdCB0byBnZW5lcmF0ZSB0aGUg ZGF0YSBmaWVsZHMgYXMgd2l0aCB0aGUgQyB2ZXJzaW9uCj4gPiA+ID4gPiBvZiB0aGlzCj4gPiA+ ID4gPiBtYWNybywgc28gdGhhdCB3ZSBjYW4gcGFzcyBpbiB3enIgZXhwbGNpaXRseSBmb3IgdGhl IHR3byBzdWItZmllbGRzPwo+ID4gPiA+ID4gCj4gPiA+ID4gPiBPdGhlciB0aGFuIHRoYXQsIHRo aXMgbG9va3MgZ29vZCB0byBtZS4KPiA+ID4gPiA+IAo+ID4gPiA+ID4gVGhhbmtzLAo+ID4gPiA+ ID4gTWFyay4KPiA+ID4gPiAKPiA+ID4gPiBvaywgd2lsbCBmaXggbmV4dCB2ZXJzaW9uLgo+ID4g PiA+IAo+ID4gPiA+IFRoYW5rcywKPiA+ID4gPiBUb25nLgo+ID4gPiAKPiA+ID4gSSB0cmllZCB0 byB1c2luZyBkYXRhIGZpbGVsZHMgYXMgd2l0aCBDIHZlcnNpb24sIGJ1dCBoZXJlIGFzc2VtYmx5 IGNvZGUgd2UKPiA+ID4gY2FuIG5vdCB1c2luZyBvcGVyYXRvciBzdWNoIGFzIDw8IGFuZCB8LCBp ZiB3ZSB1c2UgbHNsIGFuZCBvcnIgaW5zdHJ1Y3Rpb25zLAo+ID4gPiB0aGUgZ3ByIHdpbGwgYmUg b2NjdXBpZWQuCj4gPiA+IAo+ID4gPiBTbyBob3cgYWJvdXQgdXNpbmcgMHgzZmYgZGlyZWN0bHkg aGVyZT8gaXQgbWVhbnMgZXJyIHJlZ2lzdGVyIGFuZCB6ZXJvCj4gPiA+IHJlZ2lzdGVyIGJvdGgg c2V0IHRvIHgzMS4KPiA+IAo+ID4gSSBoYWQgYSBnbyBhdCBpbXBsZW1lbnRpbmcgdGhpcywgYW5k IGl0IHNlZW1zIHNpbXBsZSBlbm91Z2guIFBsZWFzZSBzZWU6Cj4gPiAKPiA+ICAgIGh0dHBzOi8v Z2l0Lmtlcm5lbC5vcmcvcHViL3NjbS9saW51eC9rZXJuZWwvZ2l0L21hcmsvbGludXguZ2l0L2xv Zy8/aD1hcm02NC9leHRhYmxlL2FzbS11YWNjZXNzCj4gPiAKPiAKPiBJIG1hZGUgdGhlIGZvbGxv d2luZyBtb2RpZmljYXRpb25zLCBhbmQgdGhlIG90aGVyIHBhcnRzIGFyZSBiYXNlZCBvbiB5b3Vy Cj4gaW1wbGVtZW50YXRpb246Cj4gCj4gYXJjaC9hcm02NC9pbmNsdWRlL2FzbS9hc20tZXh0YWJs ZS5oCj4gWy4uLl0KPiAubWFjcm8gICAgICAgICAgX2FzbV9leHRhYmxlX3VhY2Nlc3MsIGluc24s IGZpeHVwCj4gX0FTTV9FWFRBQkxFX1VBQ0NFU1MoXGluc24sIFxmaXh1cCkKPiAuZW5kbQo+IFsu Li5dCgpJIGFsc28gbWFkZSB0aGlzIHNhbWUgY2hhbmdlIGxvY2FsbHkgd2hlbiB0ZXN0aW5nLCBh bmQgYnVpbGRpbmcgd2l0aCBHQ0MgMTEuMS4wCm9yIExMVk0gMTQuMC4wIEkgYW0gbm90IHNlZWlu ZyBhbnkgcHJvYmxlbSB3aGVuIGJ1aWxkaW5nLCBhbmQgdGhlIHJlc3VsdCBpcyBhcwpleHBlY3Rl ZDoKCnwgW21hcmtAbGFrcmlkczp+L3NyYy9saW51eF0lIHVzZWtvcmcgMTEuMS4wIG1ha2UgQVJD SD1hcm02NCBDUk9TU19DT01QSUxFPWFhcmNoNjQtbGludXgtIGRlZmNvbmZpZwp8ICoqKiBEZWZh dWx0IGNvbmZpZ3VyYXRpb24gaXMgYmFzZWQgb24gJ2RlZmNvbmZpZycKfCAjCnwgIyBObyBjaGFu Z2UgdG8gLmNvbmZpZwp8ICMKfCBbbWFya0BsYWtyaWRzOn4vc3JjL2xpbnV4XSUgdXNla29yZyAx MS4xLjAgbWFrZSBBUkNIPWFybTY0IENST1NTX0NPTVBJTEU9YWFyY2g2NC1saW51eC0gLWo1MCBh cmNoL2FybTY0L2xpYi8KfCAgIENBTEwgICAgc2NyaXB0cy9hdG9taWMvY2hlY2stYXRvbWljcy5z aAp8ICAgQ0MgICAgICBhcmNoL2FybTY0L2tlcm5lbC9hc20tb2Zmc2V0cy5zCnwgICBDQUxMICAg IHNjcmlwdHMvY2hlY2tzeXNjYWxscy5zaAp8ICAgQVMgICAgICBhcmNoL2FybTY0L2tlcm5lbC92 ZHNvL25vdGUubwp8ICAgQVMgICAgICBhcmNoL2FybTY0L2tlcm5lbC92ZHNvL3NpZ3JldHVybi5v CnwgICBMRCAgICAgIGFyY2gvYXJtNjQva2VybmVsL3Zkc28vdmRzby5zby5kYmcKfCAgIFZEU09T WU0gaW5jbHVkZS9nZW5lcmF0ZWQvdmRzby1vZmZzZXRzLmgKfCAgIE9CSkNPUFkgYXJjaC9hcm02 NC9rZXJuZWwvdmRzby92ZHNvLnNvCnwgbWFrZVsyXTogTm90aGluZyB0byBiZSBkb25lIGZvciAn YXJjaC9hcm02NC9saWIvJy4KfCAgIEFTICAgICAgYXJjaC9hcm02NC9saWIvY2xlYXJfcGFnZS5v CnwgICBBUyAgICAgIGFyY2gvYXJtNjQvbGliL2NsZWFyX3VzZXIubwp8ICAgQVMgICAgICBhcmNo L2FybTY0L2xpYi9jb3B5X2Zyb21fdXNlci5vCnwgICBBUyAgICAgIGFyY2gvYXJtNjQvbGliL2Nv cHlfcGFnZS5vCnwgICBBUyAgICAgIGFyY2gvYXJtNjQvbGliL2NvcHlfdG9fdXNlci5vCnwgICBD QyAgICAgIGFyY2gvYXJtNjQvbGliL2NzdW0ubwp8ICAgQ0MgICAgICBhcmNoL2FybTY0L2xpYi9k ZWxheS5vCnwgICBBUyAgICAgIGFyY2gvYXJtNjQvbGliL21lbWNoci5vCnwgICBBUyAgICAgIGFy Y2gvYXJtNjQvbGliL21lbWNtcC5vCnwgICBBUyAgICAgIGFyY2gvYXJtNjQvbGliL21lbWNweS5v CnwgICBBUyAgICAgIGFyY2gvYXJtNjQvbGliL21lbXNldC5vCnwgICBBUyAgICAgIGFyY2gvYXJt NjQvbGliL3N0cmNoci5vCnwgICBBUyAgICAgIGFyY2gvYXJtNjQvbGliL3N0cmNtcC5vCnwgICBB UyAgICAgIGFyY2gvYXJtNjQvbGliL3N0cmxlbi5vCnwgICBBUyAgICAgIGFyY2gvYXJtNjQvbGli L3N0cm5jbXAubwp8ICAgQVMgICAgICBhcmNoL2FybTY0L2xpYi9zdHJubGVuLm8KfCAgIEFTICAg ICAgYXJjaC9hcm02NC9saWIvc3RycmNoci5vCnwgICBBUyAgICAgIGFyY2gvYXJtNjQvbGliL3Rp c2hpZnQubwp8ICAgQVMgICAgICBhcmNoL2FybTY0L2xpYi9jcmMzMi5vCnwgICBBUyAgICAgIGFy Y2gvYXJtNjQvbGliL210ZS5vCnwgICBDQyBbTV0gIGFyY2gvYXJtNjQvbGliL3hvci1uZW9uLm8K fCAgIEFSICAgICAgYXJjaC9hcm02NC9saWIvYnVpbHQtaW4uYQp8ICAgQVIgICAgICBhcmNoL2Fy bTY0L2xpYi9saWIuYQp8IFttYXJrQGxha3JpZHM6fi9zcmMvbGludXhdJSB1c2Vrb3JnIDEyLjEu MCBhYXJjaDY0LWxpbnV4LW9iamR1bXAgLWogX19leF90YWJsZSAtRCBhcmNoL2FybTY0L2xpYi9j bGVhcl91c2VyLm8KfCAKfCBhcmNoL2FybTY0L2xpYi9jbGVhcl91c2VyLm86ICAgICBmaWxlIGZv cm1hdCBlbGY2NC1saXR0bGVhYXJjaDY0CnwgCnwgCnwgRGlzYXNzZW1ibHkgb2Ygc2VjdGlvbiBf X2V4X3RhYmxlOgp8IAp8IDAwMDAwMDAwMDAwMDAwMDAgPF9fZXhfdGFibGU+Ogp8ICAgICAgICAg Li4uCnwgICAgODogICAwM2ZmMDAwMyAgICAgICAgLmluc3QgICAweDAzZmYwMDAzIDsgdW5kZWZp bmVkCnwgICAgICAgICAuLi4KfCAgIDE0OiAgIDAzZmYwMDAzICAgICAgICAuaW5zdCAgIDB4MDNm ZjAwMDMgOyB1bmRlZmluZWQKfCAgICAgICAgIC4uLgp8ICAgMjA6ICAgMDNmZjAwMDMgICAgICAg IC5pbnN0ICAgMHgwM2ZmMDAwMyA7IHVuZGVmaW5lZAp8ICAgICAgICAgLi4uCnwgICAyYzogICAw M2ZmMDAwMyAgICAgICAgLmluc3QgICAweDAzZmYwMDAzIDsgdW5kZWZpbmVkCnwgICAgICAgICAu Li4KfCAgIDM4OiAgIDAzZmYwMDAzICAgICAgICAuaW5zdCAgIDB4MDNmZjAwMDMgOyB1bmRlZmlu ZWQKfCAgICAgICAgIC4uLgp8ICAgNDQ6ICAgMDNmZjAwMDMgICAgICAgIC5pbnN0ICAgMHgwM2Zm MDAwMyA7IHVuZGVmaW5lZAoKPiBUaGUgZm9sbG93aW5nIGVycm9ycyBhcmUgcmVwb3J0ZWQgZHVy aW5nIGNvbXBpbGF0aW9uOgo+IFsuLi5dCj4gYXJjaC9hcm02NC9saWIvY2xlYXJfdXNlci5TOjQ1 OiBFcnJvcjogaW52YWxpZCBvcGVyYW5kcyAoKkFCUyogYW5kICpVTkQqCj4gc2VjdGlvbnMpIGZv ciBgPDwnCj4gWy4uLl0KCkFzIGFib3ZlLCBJJ20gbm90IHNlZWluZyB0aGlzLgoKVGhpcyBzdWdn ZXN0cyB0aGF0IHRoZSBFWF9EQVRBX1JFRygpIG1hY3JvIGlzIGdvaW5nIHdyb25nIHNvbWVob3cu IEFzc3VtaW5nIHRoZQpvcGVyYW5kIHR5cGVzIGNvcnJlc3BvbmQgdG8gdGhlIExIUyBhbmQgUkhT IG9mIHRoZSBleHByZXNzaW9uLCB0aGlzIHdvdWxkIG1lYW4KdGhlIEdQUiBudW1iZXIgaXMgZGVm aW5lZCwgYnV0IHRoZSBSRUcgdmFsdWUgaXMgbm90LCBhbmQgSSBjYW4ndCBjdXJyZW50bHkgc2Vl CmhvdyB0aGF0IGNhbiBoYXBwZW4uCgo+ICI8PCIgaXMgaW52YWxpZCBvcGVyYW5kcyBpbiBhc3Nl bWJseSwgaXMgdGhlcmUgc29tZXRoaW5nIHdyb25nIHdpdGggbWU/CgpBdCB0aGUgbW9tZW50IEkg Y2FuIG9ubHkgYXNzdW1lIHRoZXJlIGlzIGEgbG9jYWwgcHJvYmxlbS4gSSdkIHN1c3BlY3QgYSB0 eXBvCnNvbWV3aGVyZSwgYnV0IG1heWJlIHlvdSBoYXZlIGEgdG9vbGNoYWluIHdoaWNoIGJlaGF2 ZXMgZGlmZmVyZW50bHk/CgpUaGFua3MsCk1hcmsuCgpfX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1hcm0ta2VybmVsIG1haWxpbmcgbGlzdApsaW51 eC1hcm0ta2VybmVsQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5v cmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1hcm0ta2VybmVsCg==