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Wed, 31 Mar 2021 15:35:30 +0000 Received: from mail.kernel.org ([198.145.29.99]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lRcsP-006uzS-Kq for linux-arm-kernel@lists.infradead.org; Wed, 31 Mar 2021 15:35:27 +0000 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 3BC4460FEC; Wed, 31 Mar 2021 15:35:24 +0000 (UTC) Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=why.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94) (envelope-from ) id 1lRcsM-004vm1-Bm; Wed, 31 Mar 2021 16:35:22 +0100 Date: Wed, 31 Mar 2021 16:35:21 +0100 Message-ID: <8735wbqqti.wl-maz@kernel.org> From: Marc Zyngier To: Alexandru Elisei Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com Subject: Re: [PATCH v2] KVM: arm64: Initialize VCPU mdcr_el2 before loading it In-Reply-To: References: <20210323180057.263356-1-alexandru.elisei@arm.com> <87sg4dq83r.wl-maz@kernel.org> <5cfd4870-db31-cd7d-699f-bd70a1ab90fe@arm.com> <87k0pofls6.wl-maz@kernel.org> 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: alexandru.elisei@arm.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210331_163526_010315_0E5D3A02 X-CRM114-Status: GOOD ( 25.34 ) 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 T24gV2VkLCAzMSBNYXIgMjAyMSAxNjoyNTo0NiArMDEwMCwKQWxleGFuZHJ1IEVsaXNlaSA8YWxl eGFuZHJ1LmVsaXNlaUBhcm0uY29tPiB3cm90ZToKPiAKPiBIaSBNYXJjLAo+IAo+IE9uIDMvMzAv MjEgOTowNyBQTSwgTWFyYyBaeW5naWVyIHdyb3RlOgoKWy4uLl0KCj4gPiBJIHRoaW5rIGl0IHdv dWxkIGJlIGFic29sdXRlbHkgZmluZSB0byBtYWtlIHRoZSBzbG93IHBhdGggb2YKPiA+IGt2bV92 Y3B1X2ZpcnN0X3J1bl9pbml0KCkgcnVuIHdpdGggcHJlZW1wdCBkaXNhYmxlZC4gVGhpcyBoYXBw ZW5zIHNvCj4gPiByYXJlbHkgdGhhdCB0aGF0IGl0IGlzbid0IHdvcnRoIHRoaW5raW5nIGFib3V0 IGl0Lgo+IAo+IEl0IGxvb2tzIHRvIG1lIGxpa2UgaXQncyBhIGJpdCB0b28gaGVhdnktaGFuZGVk IHRvIHJ1biB0aGUgZW50aXJlCj4gZnVuY3Rpb24ga3ZtX3ZjcHVfZmlyc3RfcnVuX2luaXQoKSB3 aXRoIHByZWVtcHRpb24gZGlzYWJsZWQganVzdCBmb3IKPiBfX3RoaXNfY3B1X3JlYWQoKSBpbiBr dm1fYXJtX3NldHVwX21kY3JfZWwyKCkuIE5vdCBiZWNhdXNlIG9mIHRoZQo+IHBlcmZvcm1hbmNl IGNvc3QgKGl0J3MgbmVnbGlnaWJsZSwgYXMgaXQncyBjYWxsZWQgZXhhY3RseSBvbmNlIGluCj4g dGhlIFZDUFUgbGlmZXRpbWUpLCBidXQgYmVjYXVzZSBpdCdzIG5vdCBvYnZpb3VzIHdoeSBpdCBp cyBuZWVkZWQuCj4gCj4gSSB0cmllZCB0aGlzOgo+IAo+IEBAIC01ODAsNyArNTgwLDkgQEAgc3Rh dGljIGludCBrdm1fdmNwdV9maXJzdF9ydW5faW5pdChzdHJ1Y3Qga3ZtX3ZjcHUgKnZjcHUpCj4g wqAKPiDCoMKgwqDCoMKgwqDCoCB2Y3B1LT5hcmNoLmhhc19ydW5fb25jZSA9IHRydWU7Cj4gwqAK PiAtwqDCoMKgwqDCoMKgIGt2bV9hcm1fdmNwdV9pbml0X2RlYnVnKHZjcHUpOwo+ICvCoMKgwqDC oMKgwqAgcHJlZW1wdF9kaXNhYmxlKCk7Cj4gK8KgwqDCoMKgwqDCoCBrdm1fYXJtX3NldHVwX21k Y3JfZWwyKHZjcHUpOwo+ICvCoMKgwqDCoMKgwqAgcHJlZW1wdF9lbmFibGUoKTsKPiDCoAo+IMKg wqDCoMKgwqDCoMKgIGlmIChsaWtlbHkoaXJxY2hpcF9pbl9rZXJuZWwoa3ZtKSkpIHsKPiDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgLyoKPiAKPiBhbmQgaXQgc3RpbGwgbG9va3MgYSBi aXQgb2ZmIHRvIG1lIGJlY2F1c2UgcHJlZW1wdGlvbiBuZWVkcyB0byBiZQo+IGRpc2FibGVkIGJl Y2F1c2Ugb2YgYW4gaW1wbGVtZW50YXRpb24gZGV0YWlsIGluCj4ga3ZtX2FybV9zZXR1cF9tZGNy X2VsMigpLCBhcyB0aGUgZnVuY3Rpb24gb3BlcmF0ZXMgb24gdGhlIFZDUFUKPiBzdHJ1Y3QgYW5k IHByZWVtcHRpb24gY2FuIGJlIGVuYWJsZWQgZm9yIHRoYXQuCj4gCj4gSSB3YXMgdGhpbmtpbmcg c29tZXRoaW5nIGxpa2UgdGhpczoKPiAKPiBAQCAtMTE5LDcgKzExOSw5IEBAIHN0YXRpYyB2b2lk IGt2bV9hcm1fc2V0dXBfbWRjcl9lbDIoc3RydWN0IGt2bV92Y3B1ICp2Y3B1LCB1MzIKPiBob3N0 X21kY3IpCj4gwqAgKi8KPiDCoHZvaWQga3ZtX2FybV92Y3B1X2luaXRfZGVidWcoc3RydWN0IGt2 bV92Y3B1ICp2Y3B1KQo+IMKgewo+IC3CoMKgwqDCoMKgwqAga3ZtX2FybV9zZXR1cF9tZGNyX2Vs Mih2Y3B1LCB0aGlzX2NwdV9yZWFkKG1kY3JfZWwyKSk7Cj4gK8KgwqDCoMKgwqDCoCBwcmVlbXB0 X2Rpc2FibGUoKTsKPiArwqDCoMKgwqDCoMKgIGt2bV9hcm1fc2V0dXBfbWRjcl9lbDIodmNwdSk7 Cj4gK8KgwqDCoMKgwqDCoCBwcmVlbXB0X2VuYWJsZSgpOwo+IMKgfQo+IMKgCj4gwqAvKioKPiAK PiBXaGF0IGRvIHlvdSB0aGluaz8KCkknbSBmaW5lIHdpdGggaXQgZWl0aGVyIHdheSwgc28gcGlj ayB5b3UgZmF2b3VyaXRlIQoKVGhhbmtzLAoKCU0uCgotLSAKV2l0aG91dCBkZXZpYXRpb24gZnJv bSB0aGUgbm9ybSwgcHJvZ3Jlc3MgaXMgbm90IHBvc3NpYmxlLgoKX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJtLWtlcm5lbCBtYWlsaW5nIGxp c3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZy YWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5lbAo=