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Tue, 28 Jul 2020 12:56:00 +0000 (UTC) Received: from kamzik.brq.redhat.com (unknown [10.40.193.15]) by smtp.corp.redhat.com (Postfix) with ESMTPS id DA8C8612AB; Tue, 28 Jul 2020 12:55:58 +0000 (UTC) Date: Tue, 28 Jul 2020 14:55:53 +0200 From: Andrew Jones To: Marc Zyngier Subject: Re: [PATCH 1/5] KVM: arm64: pvtime: steal-time is only supported when configured Message-ID: <20200728125553.3k65bfdxs6u5pb4i@kamzik.brq.redhat.com> References: <20200711100434.46660-1-drjones@redhat.com> <20200711100434.46660-2-drjones@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Cc: pbonzini@redhat.com, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, steven.price@arm.com 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 T24gTW9uLCBKdWwgMjcsIDIwMjAgYXQgMDY6MjU6NTBQTSArMDEwMCwgTWFyYyBaeW5naWVyIHdy b3RlOgo+IEhpIEFuZHJldywKPiAKPiBPbiAyMDIwLTA3LTExIDExOjA0LCBBbmRyZXcgSm9uZXMg d3JvdGU6Cj4gPiBEb24ndCBjb25mdXNlIHRoZSBndWVzdCBieSBzYXlpbmcgc3RlYWwtdGltZSBp cyBzdXBwb3J0ZWQgd2hlbgo+ID4gaXQgaGFzbid0IGJlZW4gY29uZmlndXJlZCBieSB1c2Vyc3Bh Y2UgYW5kIHdvbid0IHdvcmsuCj4gPiAKPiA+IFNpZ25lZC1vZmYtYnk6IEFuZHJldyBKb25lcyA8 ZHJqb25lc0ByZWRoYXQuY29tPgo+ID4gLS0tCj4gPiAgYXJjaC9hcm02NC9rdm0vcHZ0aW1lLmMg fCA1ICsrKystCj4gPiAgMSBmaWxlIGNoYW5nZWQsIDQgaW5zZXJ0aW9ucygrKSwgMSBkZWxldGlv bigtKQo+ID4gCj4gPiBkaWZmIC0tZ2l0IGEvYXJjaC9hcm02NC9rdm0vcHZ0aW1lLmMgYi9hcmNo L2FybTY0L2t2bS9wdnRpbWUuYwo+ID4gaW5kZXggZjdiNTJjZTE1NTdlLi4yYjIyMjE0OTA5YmUg MTAwNjQ0Cj4gPiAtLS0gYS9hcmNoL2FybTY0L2t2bS9wdnRpbWUuYwo+ID4gKysrIGIvYXJjaC9h cm02NC9rdm0vcHZ0aW1lLmMKPiA+IEBAIC00Miw5ICs0MiwxMiBAQCBsb25nIGt2bV9oeXBlcmNh bGxfcHZfZmVhdHVyZXMoc3RydWN0IGt2bV92Y3B1ICp2Y3B1KQo+ID4gCj4gPiAgCXN3aXRjaCAo ZmVhdHVyZSkgewo+ID4gIAljYXNlIEFSTV9TTUNDQ19IVl9QVl9USU1FX0ZFQVRVUkVTOgo+ID4g LQljYXNlIEFSTV9TTUNDQ19IVl9QVl9USU1FX1NUOgo+ID4gIAkJdmFsID0gU01DQ0NfUkVUX1NV Q0NFU1M7Cj4gPiAgCQlicmVhazsKPiA+ICsJY2FzZSBBUk1fU01DQ0NfSFZfUFZfVElNRV9TVDoK PiA+ICsJCWlmICh2Y3B1LT5hcmNoLnN0ZWFsLmJhc2UgIT0gR1BBX0lOVkFMSUQpCj4gPiArCQkJ dmFsID0gU01DQ0NfUkVUX1NVQ0NFU1M7Cj4gPiArCQlicmVhazsKPiA+ICAJfQo+ID4gCj4gPiAg CXJldHVybiB2YWw7Cj4gCj4gSSdtIG5vdCBzbyBzdXJlIGFib3V0IHRoaXMuIEkgaGF2ZSBhbHdh eXMgY29uc2lkZXJlZCB0aGUKPiBkaXNjb3ZlcnkgaW50ZXJmYWNlIHRvIGJlICJkbyB5b3Uga25v dyBhYm91dCB0aGlzIFNNQ0NDCj4gZnVuY3Rpb24iLiBBbmQgaWYgeW91IGxvb2sgYXQgdGhlIHNw ZWMsIGl0IHNheXMgKDQuMiwKPiBQVl9USU1FX0ZFQVRVUkVTKToKPiAKPiA8cXVvdGU+Cj4gSWYg UFZfY2FsbF9pZCBpZGVudGlmaWVzIFBWX1RJTUVfRkVBVFVSRVMsIHRoaXMgY2FsbCByZXR1cm5z Ogo+IOKAoiBOT1RfU1VQUE9SVEVEICgtMSkgdG8gaW5kaWNhdGUgdGhhdCBhbGwKPiBwYXJhdmly dHVhbGl6ZWQgdGltZSBmdW5jdGlvbnMgaW4gdGhpcyBzcGVjaWZpY2F0aW9uIGFyZSBub3QKPiBz dXBwb3J0ZWQuCj4g4oCiIFNVQ0NFU1MgKDApIHRvIGluZGljYXRlIHRoYXQgYWxsIHRoZSBwYXJh dmlydHVhbGl6ZWQgdGltZQo+IGZ1bmN0aW9ucyBpbiB0aGlzIHNwZWNpZmljYXRpb24gYXJlIHN1 cHBvcnRlZC4KPiA8L3F1b3RlPgo+IAo+IFNvIHRoZSB3YXkgSSB1bmRlcnN0YW5kIGl0LCB5b3Ug Y2Fubm90IHJldHVybiAic3VwcG9ydGVkIgo+IGZvciBQVl9USU1FX0ZFQVRVUkVTLCBhbmQgeWV0 IHJldHVybiBOT1RfU1VQUE9SVEVEIGZvcgo+IFBWX1RJTUVfU1QuIEl0IGFwcGxpZXMgdG8gKmFs bCogZmVhdHVyZXMuCj4gCj4gWWVzLCB0aGlzIGlzIHZlcnkgYml6YXJyZS4gQnV0IEkgZG9uJ3Qg dGhpbmsgd2UgY2FuIGRldmlhdGUKPiBmcm9tIGl0LgoKQWgsIEkgc2VlIHlvdXIgcG9pbnQuIEJ1 dCBJIHdvbmRlciBpZiB3ZSBzaG91bGQgZHJvcCB0aGlzIHBhdGNoCm9yIGlmIHdlIHNob3VsZCBj aGFuZ2UgdGhlIHJldHVybiBvZiBBUk1fU01DQ0NfSFZfUFZfVElNRV9GRUFUVVJFUwp0byBiZSBk ZXBlbmRhbnQgb24gYWxsIHRoZSBwdiBjYWxscz8KCkRpc2NvdmVyeSB3b3VsZCBsb29rIGxpa2Ug dGhpcwoKSUYgKFNNQ0NDX0FSQ0hfRkVBVFVSRVMsIFBWX1RJTUVfRkVBVFVSRVMpID09IDA7IFRI RU4KICBJRiAoUFZfVElNRV9GRUFUVVJFUywgUFZfVElNRV9GRUFUVVJFUykgPT0gMDsgVEhFTgog ICAgUFZfVElNRV9TVCBpcyBzdXBwb3J0ZWQsIGFzIHdlbGwgYXMgYWxsIG90aGVyIFBWIGNhbGxz CiAgRUxJRiAoUFZfVElNRV9GRUFUVVJFUywgUFZfVElNRV9TVCkgPT0gMDsgVEhFTgogICAgUFZf VElNRV9TVCBpcyBzdXBwb3J0ZWQKICBFTElGIChQVl9USU1FX0ZFQVRVUkVTLCA8YW5vdGhlci1w di1jYWxsPikgPT0gMDsgVEhFTgogICAgPGFub3RoZXItcHYtY2FsbD4gaXMgc3VwcG9ydGVkCiAg Li4uCiAgRU5ESUYKRUxTRQogIE5vIFBWIGNhbGxzIGFyZSBzdXBwb3J0ZWQKRU5ESUYKCkkgYmVs aWV2ZSB0aGUgYWJvdmUgaW1wbGVtZW50cyBhIHJlYXNvbmFibGUgaW50ZXJwcmV0YXRpb24gb2Yg dGhlCnNwZWNpZmljYXRpb24sIGJ1dCB0aGUgYWxsIGZlYXR1cmUgKFBWX1RJTUVfRkVBVFVSRVMs IFBWX1RJTUVfRkVBVFVSRVMpCnRoaW5nIGlzIGluZGVlZCBiaXphcnJlIG5vIG1hdHRlciBob3cg eW91IGxvb2sgYXQgaXQuCgpUaGFua3MsCmRyZXcKCl9fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fCmt2bWFybSBtYWlsaW5nIGxpc3QKa3ZtYXJtQGxpc3RzLmNz LmNvbHVtYmlhLmVkdQpodHRwczovL2xpc3RzLmNzLmNvbHVtYmlhLmVkdS9tYWlsbWFuL2xpc3Rp bmZvL2t2bWFybQo=