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Wed, 19 Feb 2020 02:18:52 -0800 (PST) Received: from [172.16.1.159] (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 1E9F33F6CF; Wed, 19 Feb 2020 02:18:50 -0800 (PST) Subject: Re: [PATCH 3/5] kvm: arm64: Limit PMU version to ARMv8.1 To: Marc Zyngier References: <20200216185324.32596-1-maz@kernel.org> <20200216185324.32596-4-maz@kernel.org> From: James Morse Openpgp: preference=signencrypt Message-ID: Date: Wed, 19 Feb 2020 10:18:36 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US Cc: kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu 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 SGkgTWFyYywKCk9uIDIvMTkvMjAgOTo0NiBBTSwgTWFyYyBaeW5naWVyIHdyb3RlOgo+IE9uIDIw MjAtMDItMTggMTc6NDMsIEphbWVzIE1vcnNlIHdyb3RlOgo+PiBIaSBNYXJjLAo+Pgo+PiBPbiAx Ni8wMi8yMDIwIDE4OjUzLCBNYXJjIFp5bmdpZXIgd3JvdGU6Cj4+PiBPdXIgUE1VIGNvZGUgaXMg b25seSBpbXBsZW1lbnRpbmcgdGhlIEFSTXY4LjEgZmVhdHVyZXMsIHNvIGxldCdzCj4+PiBzdGlj ayB0byB0aGlzIHdoZW4gcmVwb3J0aW5nIHRoZSBmZWF0dXJlIHNldCB0byB0aGUgZ3Vlc3QuCj4+ Cj4+PiBkaWZmIC0tZ2l0IGEvYXJjaC9hcm02NC9rdm0vc3lzX3JlZ3MuYyBiL2FyY2gvYXJtNjQv a3ZtL3N5c19yZWdzLmMKPj4+IGluZGV4IDY4MmZlZGQ3NzAwZi4uMDZiMmQwZGM2YzczIDEwMDY0 NAo+Pj4gLS0tIGEvYXJjaC9hcm02NC9rdm0vc3lzX3JlZ3MuYwo+Pj4gKysrIGIvYXJjaC9hcm02 NC9rdm0vc3lzX3JlZ3MuYwo+Pj4gQEAgLTEwOTMsNiArMTA5MywxMSBAQCBzdGF0aWMgdTY0IHJl YWRfaWRfcmVnKGNvbnN0IHN0cnVjdCBrdm1fdmNwdQo+Pj4gKnZjcHUsCj4+PiDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgIEZFQVRVUkUoSURfQUE2NElTQVIxX0dQQSkgfAo+Pj4g wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoCBGRUFUVVJFKElEX0FBNjRJU0FSMV9H UEkpKTsKPj4+IMKgwqDCoMKgwqDCoMKgwqAgYnJlYWs7Cj4+PiArwqDCoMKgIGNhc2UgU1lTX0lE X0FBNjRERlIwX0VMMToKPj4+ICvCoMKgwqDCoMKgwqDCoCAvKiBMaW1pdCBQTVUgdG8gQVJNdjgu MSAqLwo+Pgo+PiBOb3QganVzdCBsaW1pdCwgYnV0IHVwZ3JhZGUgdG9vISAoZm9yY2U/KQo+PiBU aGlzIGxvb2tzIHNhZmUgYmVjYXVzZSBBUk1WOF9QTVVfRVZUWVBFX0VWRU5UIGFsd2F5cyBpbmNs dWRlcyB0aGUKPj4gZXh0cmEgYml0cyB0aGlzIGFkZGVkLCBhbmQgdGhlIHJlZ2lzdGVyIGlzIGFs d2F5cyB0cmFwcGVkLgo+IAo+IFRoYXQncyBkZWZpbml0ZWx5IG5vdCB3aGF0IEkgaW50ZW5kZWQh IExldCBtZSBmaXggdGhhdCBvbmUuCgpXaGF0IGdvZXMgd3Jvbmc/CgpUaGUgcmVnaXN0ZXIgZGVz Y3JpcHRpb24gc2F5cyB0byBzdXBwb3J0IHY4LjEgeW91IG5lZWQ6CnwgRXh0ZW5kZWQgMTYtYml0 IFBNRVZUWVBFUjxuPl9FTDAuZXZ0Q291bnQgZmllbGQKfCBJZiBFTDIgaXMgaW1wbGVtZW50ZWQs IHRoZSBNRENSX0VMMi5IUE1EIGNvbnRyb2wgYml0CgpJdCBsb29rcyBsaWtlIHRoZSBleHRlbmRl ZCBQTUVWVFlQRVIgd291bGQgd29yayB2aWEgdGhlIGVtdWxhdGlvbiwgYW5kCkVMMiBndWVzdHMg YXJlIHRvdGFsbHkgY3JhenkuCgpJcyB0aGUgU1RBTExfKiBiaXRzIGluIEFSTXY4LjEtUE1VIHRo ZSBwcm9ibGVtLCAuLi4gb3IgdGhlIGV4dHJhIHdvcmsKZm9yIE5WPwoKCj4+IFRoZSBQTVUgdmVy c2lvbiBpcyBhbHNvIHJlYWRhYmxlIHZpYSBJRF9ERlIwX0VMMS5QZXJmTW9uLCBzaG91bGQgdGhh dAo+PiBiZSBzYW5pdGlzZWQgdG8gYmUgdGhlIHNhbWU/IChJIGRvbid0IHRoaW5rIHdlJ3ZlIGhp ZGRlbiBhbiBhYXJjaDY0Cj4+IGZlYXR1cmUgdGhhdCBhbHNvIGV4aXN0ZWQgaW4gYWFyY2gzMiBi ZWZvcmUpLgo+IAo+IEluZGVlZCwgeWV0IGFub3RoZXIgb3ZlcnNpZ2h0LiBJJ2xsIGZpeCB0aGF0 IHRvby4KCihXZWlyZCB2YXJpYXRpb24gaW4gdGhlIGFhcmNoMzIgYW5kIGFhcmNoNjQgSUQgcmVn aXN0ZXJzIGlzbid0IHNvbWV0aGluZwpJIGNhcmUgYWJvdXQgLi4uIHdobyB3b3VsZCBldmVyIGxv b2sgYXQgYm90aD8pCgoKClRoYW5rcywKCkphbWVzCl9fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fCmt2bWFybSBtYWlsaW5nIGxpc3QKa3ZtYXJtQGxpc3RzLmNz LmNvbHVtYmlhLmVkdQpodHRwczovL2xpc3RzLmNzLmNvbHVtYmlhLmVkdS9tYWlsbWFuL2xpc3Rp bmZvL2t2bWFybQo=