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 CFAF5C433F5 for ; Fri, 18 Mar 2022 17:19:34 +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=KLWupU4QbOo0wrwGriMUfpvjCCCssEJZIhmWbCS5XI4=; b=GaYdhR8RoUQuQ+ ecafXuFH2IRGCVL0Ef7wr15VNTh2A2C+4dFLimY3M7uHNGUlcPuHZPPYdfvKEnimRsgYi+SqlQ+KH cGJS7qlHpTh+MuoVXf3FC4YlvGaqLnodSR+0N0/unSFmz5HqLDp/9G7PdMvFqzN2kvL8jVaPvEm+g y9wwTBGL4qyMrESFrP7xxYSu8l0zExfF0j538L8E+XLyZ5o3d6Hsv4yiuixF+B2BmmBMUN3ckS8cT H7K2PjeHXb+/54aG1o4jVXXhNQmhvTYz8vRDwR0xeU70siXr03+f5PYz6N0z+BrWXFRzuxN0jBKbe 5hgEMFyNfoDSGay1NurQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nVGFA-002TWR-Vi; Fri, 18 Mar 2022 17:18:29 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nVGF6-002TVL-Ru; Fri, 18 Mar 2022 17:18:26 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 54A7D619B6; Fri, 18 Mar 2022 17:18:24 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 80BEDC340E8; Fri, 18 Mar 2022 17:18:20 +0000 (UTC) Date: Fri, 18 Mar 2022 17:18:16 +0000 From: Catalin Marinas To: Tong Tiangen Cc: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Pasha Tatashin , Andrew Morton , Will Deacon , Paul Walmsley , Palmer Dabbelt , Palmer Dabbelt , Albert Ou , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, linux-riscv@lists.infradead.org Subject: Re: [PATCH -next 3/4] arm64: mm: add support for page table check Message-ID: References: <20220317141203.3646253-1-tongtiangen@huawei.com> <20220317141203.3646253-4-tongtiangen@huawei.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220318_101824_970560_BBA23A76 X-CRM114-Status: GOOD ( 19.15 ) 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 T24gRnJpLCBNYXIgMTgsIDIwMjIgYXQgMTE6NTg6MjJBTSArMDgwMCwgVG9uZyBUaWFuZ2VuIHdy b3RlOgo+IOWcqCAyMDIyLzMvMTggMzowMCwgQ2F0YWxpbiBNYXJpbmFzIOWGmemBkzoKPiA+IE9u IFRodSwgTWFyIDE3LCAyMDIyIGF0IDAyOjEyOjAyUE0gKzAwMDAsIFRvbmcgVGlhbmdlbiB3cm90 ZToKPiA+ID4gQEAgLTYyOCw2ICs2NDcsMjUgQEAgc3RhdGljIGlubGluZSB1bnNpZ25lZCBsb25n IHBtZF9wYWdlX3ZhZGRyKHBtZF90IHBtZCkKPiA+ID4gICAjZGVmaW5lIHB1ZF9sZWFmKHB1ZCkJ CXB1ZF9zZWN0KHB1ZCkKPiA+ID4gICAjZGVmaW5lIHB1ZF92YWxpZChwdWQpCQlwdGVfdmFsaWQo cHVkX3B0ZShwdWQpKQo+ID4gPiArI2lmZGVmIENPTkZJR19QQUdFX1RBQkxFX0NIRUNLCj4gPiA+ ICtzdGF0aWMgaW5saW5lIGJvb2wgcHRlX3VzZXJfYWNjZXNzaWJsZV9wYWdlKHB0ZV90IHB0ZSkK PiA+ID4gK3sKPiA+ID4gKwlyZXR1cm4gKHB0ZV92YWwocHRlKSAmIFBURV9WQUxJRCkgJiYgKHB0 ZV92YWwocHRlKSAmIFBURV9VU0VSKTsKPiA+ID4gK30KWy4uLl0KPiA+IERvIHdlIGNhcmUgYWJv dXQgUFJPVF9OT05FIG1hcHBpbmdzIGhlcmU/IFRoZXkgaGF2ZSB0aGUgdmFsaWQgYml0Cj4gPiBj bGVhcmVkIGJ1dCBwdGVfcHJlc2VudCgpIGlzIHRydWUuCj4gPiAKPiAKPiBQVEMgd2lsbCBub3Qg Y2hlY2sgdGhpcyBzcGVjaWFsIHR5cGUoUFJPVF9OT05FKSBvZiBwYWdlLgoKUFJPVF9OT05FIGlz IGp1c3QgYSBwZXJtaXNzaW9uIGJ1dCBzaW5jZSB3ZSBkb24ndCBoYXZlIGluZGVwZW5kZW50IHJl YWQKYW5kIHdyaXRlIGJpdHMgaW4gdGhlIHB0ZSwgd2UgaW1wbGVtZW50IGl0IGFzIGFuIGludmFs aWQgcHRlIChiaXQgMApjbGVhcmVkKS4gVGhlIG90aGVyIGNvbnRlbnQgb2YgdGhlIHB0ZSBpcyBm aW5lLCBzbyBwdGVfcGZuKCkgc2hvdWxkCnN0aWxsIHdvcmsuIFBUQyBjb3VsZCBhcyB3ZWxsIGNo ZWNrIHRoaXMsIEkgZG9uJ3QgdGhpbmsgaXQgaHVydHMuCgo+ID4gPiArc3RhdGljIGlubGluZSBi b29sIHBtZF91c2VyX2FjY2Vzc2libGVfcGFnZShwbWRfdCBwbWQpCj4gPiA+ICt7Cj4gPiA+ICsJ cmV0dXJuIHBtZF9sZWFmKHBtZCkgJiYgKHBtZF92YWwocG1kKSAmIFBURV9WQUxJRCkgJiYKPiA+ ID4gKwkJKHBtZF92YWwocG1kKSAmIFBURV9VU0VSKTsKPiA+ID4gK30KPiA+IAo+ID4gcG1kX2xl YWYoKSBpbXBsaWVzIHZhbGlkLCBzbyB5b3UgY2FuIHNraXAgaXQgaWYgdGhhdCdzIHRoZSBhaW0u Cj4gCj4gUFRDIG9ubHkgY2hlY2tzIHdoZXRoZXIgdGhlIG1lbW9yeSBibG9jayBjb3JyZXNwb25k aW5nIHRvIHRoZSBwbWRfbGVhZiB0eXBlCj4gY2FuIGFjY2VzcywgZm9yICFwbWRfbGVhZiwgUFRD IGNoZWNrcyBhdCB0aGUgcHRlIGxldmVsLiBTbyBpIHRoaW5rIHRoaXMgaXMKPiBuZWNlc3Nhcnku CgpNeSBwb2ludCBpcyB0aGF0IHRoZSAocG1kX3ZhbChwbWQpICYgUFRFX1ZBTElEKSBjaGVjayBp cyBzdXBlcmZsdW91cwpzaW5jZSB0aGF0J3MgY292ZXJlZCBieSBwbWRfbGVhZigpIGFscmVhZHku CgotLSAKQ2F0YWxpbgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX18KbGludXgtYXJtLWtlcm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0 cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGlu Zm8vbGludXgtYXJtLWtlcm5lbAo=