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 X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=BAYES_00,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AF4AFC433B4 for ; Sat, 8 May 2021 09:15:45 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 10AA861377 for ; Sat, 8 May 2021 09:15:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 10AA861377 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvmarm-bounces@lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 9343B4B128; Sat, 8 May 2021 05:15:44 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Hs2sE2ydJAIH; Sat, 8 May 2021 05:15:43 -0400 (EDT) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 77C0F4B133; Sat, 8 May 2021 05:15:43 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 7A4F64B122 for ; Sat, 8 May 2021 05:15:42 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Ie3st88yqhJr for ; Sat, 8 May 2021 05:15:41 -0400 (EDT) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 1B6724B10B for ; Sat, 8 May 2021 05:15:41 -0400 (EDT) Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D14EE6135D; Sat, 8 May 2021 09:15:39 +0000 (UTC) Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=wait-a-minute.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1lfJ3h-0005Lz-HK; Sat, 08 May 2021 10:15:37 +0100 Date: Sat, 08 May 2021 10:15:36 +0100 Message-ID: <874kfdvb5z.wl-maz@kernel.org> From: Marc Zyngier To: Jason Wang Subject: Re: Question on guest enable msi fail when using GICv4/4.1 In-Reply-To: <373c70d3-eda3-8e84-d138-2f90d4e55217@redhat.com> References: <3a2c66d6-6ca0-8478-d24b-61e8e3241b20@hisilicon.com> <87k0oaq5jf.wl-maz@kernel.org> <878s4qq00u.wl-maz@kernel.org> <874kfepht4.wl-maz@kernel.org> <373c70d3-eda3-8e84-d138-2f90d4e55217@redhat.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/27.1 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: jasowang@redhat.com, lingshan.zhu@intel.com, zhangshaokun@hisilicon.com, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, linux-pci@vger.kernel.org, alex.williamson@redhat.com, cohuck@redhat.com, tangnianyao@huawei.com, bhelgaas@google.com, eric.auger@redhat.com, mst@redhat.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Cc: kvm@vger.kernel.org, "Michael S. Tsirkin" , linux-pci@vger.kernel.org, Cornelia Huck , Shaokun Zhang , Alex Williamson , Bjorn Helgaas , Zhu Lingshan , kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu T24gU2F0LCAwOCBNYXkgMjAyMSAwMjo1MTozOSArMDEwMCwKSmFzb24gV2FuZyA8amFzb3dhbmdA cmVkaGF0LmNvbT4gd3JvdGU6Cj4gCj4gCj4g5ZyoIDIwMjEvNS84IOS4iuWNiDE6MzYsIE1hcmMg WnluZ2llciDlhpnpgZM6CgpbLi4uXQoKPiA+IEFkZGluZyBaaHUsIEphc29uLCBNU1QgdG8gdGhl IHBhcnR5LiBJdCBhbGwgc2VlbXMgdG8gYmUgY2F1c2VkIGJ5IHRoaXMKPiA+IGNvbW1pdDoKPiA+ IAo+ID4gY29tbWl0IGE5NzlhNmFhMDA5ZjNjOTk2ODk0MzJlMGNkYjU0MDJhNDQ2M2ZiODgKPiA+ IEF1dGhvcjogWmh1IExpbmdzaGFuIDxsaW5nc2hhbi56aHVAaW50ZWwuY29tPgo+ID4gRGF0ZTog ICBGcmkgSnVsIDMxIDE0OjU1OjMzIDIwMjAgKzA4MDAKPiA+IAo+ID4gICAgICBpcnFieXBhc3M6 IGRvIG5vdCBzdGFydCBjb25zL3Byb2Qgd2hlbiBmYWlsZWQgY29ubmVjdAo+ID4gICAgICAgICAg IElmIGZhaWxlZCB0byBjb25uZWN0LCB0aGVyZSBpcyBubyBuZWVkIHRvIHN0YXJ0IGNvbnN1bWVy Cj4gPiBub3IKPiA+ICAgICAgcHJvZHVjZXIuCj4gPiAgICAgICAgICAgU2lnbmVkLW9mZi1ieTog Wmh1IExpbmdzaGFuIDxsaW5nc2hhbi56aHVAaW50ZWwuY29tPgo+ID4gICAgICBTdWdnZXN0ZWQt Ynk6IEphc29uIFdhbmcgPGphc293YW5nQHJlZGhhdC5jb20+Cj4gPiAgICAgIExpbms6IGh0dHBz Oi8vbG9yZS5rZXJuZWwub3JnL3IvMjAyMDA3MzEwNjU1MzMuNDE0NC03LWxpbmdzaGFuLnpodUBp bnRlbC5jb20KPiA+ICAgICAgU2lnbmVkLW9mZi1ieTogTWljaGFlbCBTLiBUc2lya2luIDxtc3RA cmVkaGF0LmNvbT4KPiA+IAo+ID4gCj4gPiBaaHUsIEknZCByZWFsbHkgbGlrZSB0byB1bmRlcnN0 YW5kIHdoeSB5b3UgdGhpbmsgaXQgaXMgT0sgbm90IHRvCj4gPiByZXN0YXJ0IGNvbnN1bWVyIGFu ZCBwcm9kdWNlcnMgd2hlbiBhIGNvbm5lY3Rpb24gaGFzIGZhaWxlZCB0byBiZQo+ID4gZXN0YWJs aXNoZWQgYmV0d2VlbiB0aGUgdHdvPwo+IAo+IAo+IE15IGJhZCwgSSBkaWRuJ3QgY2hlY2sgQVJN IGNvZGUgYnV0IGl0J3Mgbm90IGVhc3kgdG8gaW5mZXIgdGhhdCB0aGUKPiBjb25zLT5zdGFydC9z dG9wIGlzIG5vdCBhIHBlciBjb25zdW1lciBzcGVjaWZpYyBvcGVyYXRpb24gYnV0IGEgZ2xvYmFs Cj4gb25lIGxpa2UgVk0gaGFsdGluZy9yZXN1bWluZy4KCkkgZG9uJ3QgZGlzYWdyZWUgdGhhdCBp dCBpcyBhIGJpdCBvZiBhbiBvZGQgYmVoYXZpb3VyLCBhbmQgbWF5YmUgd2UKY2FuIGV2ZW50dWFs bHkgcmVsYXggdGhpcy4gSG93ZXZlciwgbXkgcnVsZSBvZiB0aHVtYiBmb3IgZXJyb3IKaGFuZGxp bmcgaXMgdG8gdHJ5IGFuZCBwdXQgdGhpbmdzIGJhY2sgaW4gdGhlIHN0YXRlIHlvdSBmb3VuZCB0 aGVtLgoKSXQgaXMgYWxzbyB1bmZvcnR1bmF0ZSB0aGF0IHRoaXMgc2FtZSBjb21taXQgaW50cm9k dWNlcyBhbiBpbnRlcmVzdGluZwpidWcgYnkgdW5jb25kaXRpb25hbGx5IGNhbGxpbmcgZGVsX3By b2R1Y2VyKCksIGV2ZW4gaWYgdGhlCnByb2R1Y2VyL2NvbnN1bWVyIGNvbm5lY3Rpb24gaGFzIHN1 Y2NlZWRlZC4gSSBndWVzcyBpdCBpcyBhIGdvb2QgdGhpbmcKdGhhdCBub2JvZHkgc2VlbSB0byBp bXBsZW1lbnQgYW55IG9mIHRoZSBwcm9kdWNlciBjYWxsYmFja3MuCgo+ID4gSW4gdGhlIGNhc2Ug b2YgS1ZNL2FybTY0LCB0aGlzIHJlc3VsdHMgaW4gdGhlIGd1ZXN0IGJlaW5nIGZvcmV2ZXIKPiA+ IHN1c3BlbmRlZCBhbmQgbmV2ZXIgcmVzdW1lZC4gVGhhdCdzIG9idmlvdXNseSBub3QgYW4gYWNj ZXB0YWJsZQo+ID4gcmVncmVzc2lvbiwgYXMgdGhlcmUgaXMgYSBudW1iZXIgb2YgYmVuaWduIHJl YXNvbnMgZm9yIGEgY29ubmVjdCB0bwo+ID4gZmFpbC4KPiAKPiAKPiBMZXQncyByZXZlcnQgdGhp cyBjb21taXQuCgpUaGFua3MsCgoJTS4KCi0tIApXaXRob3V0IGRldmlhdGlvbiBmcm9tIHRoZSBu b3JtLCBwcm9ncmVzcyBpcyBub3QgcG9zc2libGUuCl9fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fCmt2bWFybSBtYWlsaW5nIGxpc3QKa3ZtYXJtQGxpc3RzLmNz LmNvbHVtYmlhLmVkdQpodHRwczovL2xpc3RzLmNzLmNvbHVtYmlhLmVkdS9tYWlsbWFuL2xpc3Rp bmZvL2t2bWFybQo=