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Wed, 2 Sep 2020 23:55:19 +0000 (UTC) Received: from [10.64.54.159] (vpn2-54-159.bne.redhat.com [10.64.54.159]) by smtp.corp.redhat.com (Postfix) with ESMTPS id E1E8B5C1C4; Wed, 2 Sep 2020 23:55:13 +0000 (UTC) Subject: Re: [PATCH] arm64/kvm: Fix zapping stage2 page table wrongly To: Marc Zyngier , Alexandru Elisei References: <20200822024444.28132-1-gshan@redhat.com> <9bcb88aff4fbacfad28d13234681bc2f@kernel.org> From: Gavin Shan Message-ID: <3dc0bb34-d0cf-1848-d4a7-9b5c6f152297@redhat.com> Date: Thu, 3 Sep 2020 09:55:09 +1000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.0 MIME-Version: 1.0 In-Reply-To: <9bcb88aff4fbacfad28d13234681bc2f@kernel.org> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=gshan@redhat.com X-Mimecast-Spam-Score: 0.002 X-Mimecast-Originator: redhat.com Content-Language: en-US Cc: kvmarm@lists.cs.columbia.edu, shan.gavin@gmail.com X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list Reply-To: Gavin Shan List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu SGkgTWFyYywKCk9uIDkvMi8yMCA5OjEwIFBNLCBNYXJjIFp5bmdpZXIgd3JvdGU6Cj4gT24gMjAy MC0wOS0wMiAxMTo1OSwgQWxleGFuZHJ1IEVsaXNlaSB3cm90ZToKClsuLi5dCgo+IAo+ICBGcm9t IDJhMzQ1YTgyNmE0N2Y5MDYxYmIzNzA0NWExZDg5ZWE1NGI1MWZiODAgTW9uIFNlcCAxNyAwMDow MDowMCAyMDAxCj4gRnJvbTogTWFyYyBaeW5naWVyIDxtYXpAa2VybmVsLm9yZz4KPiBEYXRlOiBX ZWQsIDIgU2VwIDIwMjAgMTE6MTg6MjkgKzAxMDAKPiBTdWJqZWN0OiBbUEFUQ0hdIEtWTTogYXJt NjQ6IERvIG5vdCB0cnkgdG8gbWFwIFBVRHMgd2hlbiB0aGV5IGFyZSBmb2xkZWQgaW50bwo+ICDC oFBNRAo+IAo+IEZvciB0aGUgb2JzY3VyZSBjYXNlcyB3aGVyZSBQTUQgYW5kIFBVRCBhcmUgdGhl IHNhbWUgc2l6ZQo+ICg2NGtCIHBhZ2VzIHdpdGggNDJiaXQgVkEsIGZvciBleGFtcGxlLCB3aGlj aCByZXN1bHRzIGluIG9ubHkKPiB0d28gbGV2ZWxzIG9mIHBhZ2UgdGFibGVzKSwgd2UgY2FuJ3Qg bWFwIGFueXRoaW5nIGFzIGEgUFVELAo+IGJlY2F1c2UgdGhlcmUgaXMuLi4gZXJtLi4uIG5vIFBV RCB0byBzcGVhayBvZi4gRXZlcnl0aGluZyBpcwo+IGVpdGhlciBhIFBNRCBvciBhIFBURS4KPiAK PiBTbyBsZXQncyBvbmx5IHRyeSBhbmQgbWFwIGEgUFVEIHdoZW4gaXRzIHNpemUgaXMgZGlmZmVy ZW50IGZyb20KPiB0aGF0IG9mIGEgUE1ELgo+IAo+IENjOiBzdGFibGVAdmdlci5rZXJuZWwub3Jn Cj4gRml4ZXM6IGI4ZTBiYTdjOGJlYSAoIktWTTogYXJtNjQ6IEFkZCBzdXBwb3J0IGZvciBjcmVh dGluZyBQVUQgaHVnZXBhZ2VzIGF0IHN0YWdlIDIiKQo+IFJlcG9ydGVkLWJ5OiBHYXZpbiBTaGFu IDxnc2hhbkByZWRoYXQuY29tPgo+IFJlcG9ydGVkLWJ5OiBFcmljIEF1Z2VyIDxlcmljLmF1Z2Vy QHJlZGhhdC5jb20+Cj4gU2lnbmVkLW9mZi1ieTogTWFyYyBaeW5naWVyIDxtYXpAa2VybmVsLm9y Zz4KPiAtLS0KPiAgwqBhcmNoL2FybTY0L2t2bS9tbXUuYyB8IDIgKy0KPiAgwqAxIGZpbGUgY2hh bmdlZCwgMSBpbnNlcnRpb24oKyksIDEgZGVsZXRpb24oLSkKPiAKCkl0IHdvcmtlZCBmb3IgbWUg ZWl0aGVyOgoKUmV2aWV3ZWQtYnk6IEdhdmluIFNoYW4gPGdzaGFuQHJlZGhhdC5jb20+ClRlc3Rl ZC1ieTogR2F2aW4gU2hhbiA8Z3NoYW5AcmVkaGF0LmNvbT4KCj4gZGlmZiAtLWdpdCBhL2FyY2gv YXJtNjQva3ZtL21tdS5jIGIvYXJjaC9hcm02NC9rdm0vbW11LmMKPiBpbmRleCBiYTAwYmNjMGM4 ODQuLmMzYTkyZmE1MzdmZCAxMDA2NDQKPiAtLS0gYS9hcmNoL2FybTY0L2t2bS9tbXUuYwo+ICsr KyBiL2FyY2gvYXJtNjQva3ZtL21tdS5jCj4gQEAgLTE5NzAsNyArMTk3MCw3IEBAIHN0YXRpYyBp bnQgdXNlcl9tZW1fYWJvcnQoc3RydWN0IGt2bV92Y3B1ICp2Y3B1LCBwaHlzX2FkZHJfdCBmYXVs dF9pcGEsCj4gIMKgwqDCoMKgwqDCoMKgwqAgKGZhdWx0X3N0YXR1cyA9PSBGU0NfUEVSTSAmJgo+ ICDCoMKgwqDCoMKgwqDCoMKgwqAgc3RhZ2UyX2lzX2V4ZWMobW11LCBmYXVsdF9pcGEsIHZtYV9w YWdlc2l6ZSkpOwo+IAo+IC3CoMKgwqAgaWYgKHZtYV9wYWdlc2l6ZSA9PSBQVURfU0laRSkgewo+ ICvCoMKgwqAgaWYgKFBVRF9TSVpFICE9IFBNRF9TSVpFICYmIHZtYV9wYWdlc2l6ZSA9PSBQVURf U0laRSkgewo+ICDCoMKgwqDCoMKgwqDCoMKgIHB1ZF90IG5ld19wdWQgPSBrdm1fcGZuX3B1ZChw Zm4sIG1lbV90eXBlKTsKPiAKPiAgwqDCoMKgwqDCoMKgwqDCoCBuZXdfcHVkID0ga3ZtX3B1ZF9t a2h1Z2UobmV3X3B1ZCk7CgpUaGFua3MsCkdhdmluCgpfX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fXwprdm1hcm0gbWFpbGluZyBsaXN0Cmt2bWFybUBsaXN0cy5j cy5jb2x1bWJpYS5lZHUKaHR0cHM6Ly9saXN0cy5jcy5jb2x1bWJpYS5lZHUvbWFpbG1hbi9saXN0 aW5mby9rdm1hcm0K