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Fri, 13 Aug 2021 17:33:59 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mEb44-00DGvm-Pj for linux-arm-kernel@lists.infradead.org; Fri, 13 Aug 2021 17:33:56 +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 2D71761038; Fri, 13 Aug 2021 17:33:52 +0000 (UTC) Received: from 109-170-232-56.xdsl.murphx.net ([109.170.232.56] 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 1mEb41-004qYd-UR; Fri, 13 Aug 2021 18:33:50 +0100 Date: Fri, 13 Aug 2021 18:33:58 +0100 Message-ID: <87k0kp1c6x.wl-maz@kernel.org> From: Marc Zyngier To: Will Deacon Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, =?UTF-8?B?UmFmYcWCIE1pxYJlY2tp?= , Catalin Marinas , Mark Rutland , Ard Biesheuvel , Florian Fainelli , bcm-kernel-feedback-list@broadcom.com, kernel-team@android.com Subject: Re: [PATCH 3/5] arm64: Detect disabled HVC early In-Reply-To: <20210813090539.GA7536@willie-the-truck> References: <20210812190213.2601506-1-maz@kernel.org> <20210812190213.2601506-4-maz@kernel.org> <20210813090539.GA7536@willie-the-truck> 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: 109.170.232.56 X-SA-Exim-Rcpt-To: will@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, zajec5@gmail.com, catalin.marinas@arm.com, mark.rutland@arm.com, ardb@kernel.org, f.fainelli@gmail.com, bcm-kernel-feedback-list@broadcom.com, kernel-team@android.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-20210813_103352_908134_EC4B75DD X-CRM114-Status: GOOD ( 32.32 ) 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 T24gRnJpLCAxMyBBdWcgMjAyMSAxMDowNTo0MCArMDEwMCwKV2lsbCBEZWFjb24gPHdpbGxAa2Vy bmVsLm9yZz4gd3JvdGU6Cj4gCj4gT24gVGh1LCBBdWcgMTIsIDIwMjEgYXQgMDg6MDI6MTFQTSAr MDEwMCwgTWFyYyBaeW5naWVyIHdyb3RlOgo+ID4gSGF2aW5nIEhWQyBkaXNhYmxlZCBmcm9tIEVM MyB3aGlsZSB0aGUga2VybmVsIGlzIGVudGVyZWQgYXQgRUwyCj4gPiBpcyBhIGNvbXBsZXRlIG5p Z2h0bWFyZS4KPiA+IAo+ID4gV2UgZW5kLXVwIHRha2luZyBhbiBVTkRFRiBhdCB0aGUgd29yc2Ug cG9zc2libGUgbW9tZW50IChjaGVja2luZwo+ID4gZm9yIFZIRSkgYW5kIGV2ZW4gaWYgd2UgZGlk bid0LCBoYXZpbmcgS1ZNIGVuYWJsZWQgd291bGQgc2lnbmlmeQo+ID4gdGhlIHByZW1hdHVyZSBl bmQgb2YgdGhlIGtlcm5lbC4KPiA+IAo+ID4gSW5zdGVhZCwgdHJ5IGFuZCBkZXRlY3QgdGhpcyBz dHVwaWQgY2FzZSBieSBpc3N1aW5nIGEgSFZDCj4gPiBmb3IgSFZDX1JFU0VUX1ZFQ1RPUlMsIHdo aWNoIGRvZXMgbm90aGluZyB3aGVuIHRoZSBzdHVicwo+ID4gYXJlIGxpdmUuIElmIHdlIGdldCBI VkNfU1RVQl9FUlIgYmFjaywgdGhhdCdzIGJlY2F1c2UgdGhlCj4gPiBVTkRFRiBoYW5kbGVyIGhh cyBraWNrZWQgaW4uCj4gPiAKPiA+IEluIHRoaXMgc2l0dWF0aW9uLCBjbG9zZSB5b3VyIGV5ZXMs IGJsb2NrIHlvdXIgbm9zZSwgYW5kIGdyYWNlZnVsbHkKPiA+IHByZXRlbmQgd2UgaGF2ZSBib290 ZWQgYXQgRUwxLgo+ID4gCj4gPiBSZXBvcnRlZC1ieTogUmFmYcWCIE1pxYJlY2tpIDx6YWplYzVA Z21haWwuY29tPgo+ID4gU2lnbmVkLW9mZi1ieTogTWFyYyBaeW5naWVyIDxtYXpAa2VybmVsLm9y Zz4KPiA+IC0tLQo+ID4gIGFyY2gvYXJtNjQva2VybmVsL2hlYWQuUyB8IDIyICsrKysrKysrKysr KysrKysrKysrKysKPiA+ICAxIGZpbGUgY2hhbmdlZCwgMjIgaW5zZXJ0aW9ucygrKQo+ID4gCj4g PiBkaWZmIC0tZ2l0IGEvYXJjaC9hcm02NC9rZXJuZWwvaGVhZC5TIGIvYXJjaC9hcm02NC9rZXJu ZWwvaGVhZC5TCj4gPiBpbmRleCA5ZDVhYTU2YTk4Y2MuLmQ2YjJiMDVmNWQzYSAxMDA2NDQKPiA+ IC0tLSBhL2FyY2gvYXJtNjQva2VybmVsL2hlYWQuUwo+ID4gKysrIGIvYXJjaC9hcm02NC9rZXJu ZWwvaGVhZC5TCj4gPiBAQCAtNTE5LDYgKzUxOSwyOCBAQCBTWU1fSU5ORVJfTEFCRUwoaW5pdF9l bDIsIFNZTV9MX0xPQ0FMKQo+ID4gIAltc3IJdmJhcl9lbDIsIHgwCj4gPiAgCWlzYgo+ID4gIAo+ ID4gKwkvLyBDaGVjayB0aGF0IEhWQyBhY3R1YWxseSB3b3Jrcy4uLgo+ID4gKwltb3YJeDAsICNI VkNfUkVTRVRfVkVDVE9SUwo+ID4gKwlodmMJIzAKPiA+ICsKPiA+ICsJbW92X3EJeDEsIEhWQ19T VFVCX0VSUgo+ID4gKwljbXAJeDAsIHgxCj4gPiArCWIubmUJMGYKPiA+ICsKPiA+ICsJLyoKPiA+ ICsJICogSFZDIGlzIHVudXNhYmxlLCBzbyBwcmV0ZW5kIHdlIGFjdHVhbGx5IGJvb3RlZCBhdCBF TDEuCj4gPiArCSAqIE9uY2Ugd2UgaGF2ZSBsZWZ0IEVMMiwgdGhlcmUgd2lsbCBiZSBubyBnb2lu ZyBiYWNrLgo+ID4gKwkgKi8KPiAKPiBUaGlzIGNvbW1lbnQgZ290IG1lIHRoaW5raW5nLi4uCj4g Cj4gCS5tYWNybwlob3N0X2h2YzAKPiAJbXJzCXh6ciwgYWN0bHJfZWwxCj4gCS5lbmRtCj4gCj4g dGhlbiBzZXQgSENSX0VMMi5UQUNSPTEgd2hpbGUgd2Ugc3RpbGwgY2FuIGFuZCBtYXRjaCB0aGUg SVNTIGFnYWluc3QgYQo+IGNvbnN0YW50IGluIHRoZSBoYW5kbGVyLiBUb28gYXdmdWw/CgpJIGhh ZCBhIHNpbWlsYXIgaWRlYSwgdXNpbmcgYW4gSUQgcmVnaXN0ZXIgaW5zdGVhZCAodGhvdWdoIEFD VExSX0VMMQppcyBtdWNoIG5lYXRlcikuIEl0IHdvdWxkIGluZGVlZCBhbGxvdyB0aGUga2VybmVs IHRvIGdvIGJhY2sgdG8gRUwyLgoKQnV0IGZvciB3aGF0IHB1cnBvc2U/IFllcywgd2UgY291bGQg ZW5hYmxlIEtWTSB0aGF0IHdheS4gSG93ZXZlciwgdGhlCmd1ZXN0IHdvdWxkIG5lZWQgdG8ga25v dyBhYm91dCBpdCBhcyB3ZWxsLCBhcyBldmVuIHNpbXBsZSB0aGluZ3MgbGlrZQpQU0NJIHdvdWxk bid0IHdvcmsuIFRoYXQncyB3b3VsZCBiZSBkZWZpbmluZyBhIG5ldyBndWVzdCBBQkksIGFuZCBJ J20Kbm90IG92ZXJseSBrZWVuIG9uIGl0LgoKVW5sZXNzIHlvdSBhcmUgdGhpbmtpbmcgb2Ygc29t ZXRoaW5nIGVsc2U/CgpUaGFua3MsCgoJTS4KCi0tIApXaXRob3V0IGRldmlhdGlvbiBmcm9tIHRo ZSBub3JtLCBwcm9ncmVzcyBpcyBub3QgcG9zc2libGUuCgpfX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1hcm0ta2VybmVsIG1haWxpbmcgbGlzdAps aW51eC1hcm0ta2VybmVsQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVh ZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1hcm0ta2VybmVsCg==