From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Laight Subject: RE: [PATCH v6] x86: load FPU registers on return to userland Date: Tue, 15 Jan 2019 14:33:32 +0000 Message-ID: <1311521fdd274c08b379cef7252ebd8f@AcuMS.aculab.com> References: <20190109114744.10936-1-bigeasy@linutronix.de> <2e396dbcbb1c4cc191b4208626baed07@AcuMS.aculab.com> <20190115131516.ocyi34ovkgairfiy@linutronix.de> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Cc: "linux-kernel@vger.kernel.org" , "x86@kernel.org" , Andy Lutomirski , "Paolo Bonzini" , =?utf-8?B?UmFkaW0gS3LEjW3DocWZ?= , "kvm@vger.kernel.org" , "Jason A. Donenfeld" , Rik van Riel , Dave Hansen To: 'Sebastian Andrzej Siewior' Return-path: In-Reply-To: <20190115131516.ocyi34ovkgairfiy@linutronix.de> Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org RnJvbTogJ1NlYmFzdGlhbiBBbmRyemVqIFNpZXdpb3InDQo+IFNlbnQ6IDE1IEphbnVhcnkgMjAx OSAxMzoxNQ0KPiBPbiAyMDE5LTAxLTE1IDEyOjQ0OjUzIFsrMDAwMF0sIERhdmlkIExhaWdodCB3 cm90ZToNCj4gPiBPbmNlIHRoaXMgaXMgZG9uZSBpdCBtaWdodCBiZSB3b3J0aCB3aGlsZSBhZGRp bmcgYSBwYXJhbWV0ZXIgdG8NCj4gPiBrZXJuZWxfZnB1X2JlZ2luKCkgdG8gcmVxdWVzdCB0aGUg cmVnaXN0ZXJzIG9ubHkgd2hlbiB0aGV5IGRvbid0DQo+ID4gbmVlZCBzYXZpbmcuDQo+ID4gVGhp cyB3b3VsZCBiZW5lZml0IGNvZGUgcGF0aHMgd2hlcmUgdGhlIGdhaW5zIGFyZSByZWFzb25hYmxl IGJ1dCBub3QgbWFzc2l2ZS4NCj4gDQo+IFNvIGlmIHNhdmluZyArIEZQVSBjb2RlIGlzIGEgc21h bGwgd2luIHdoeSBub3QgZG8gdGhpcyBhbHdheXM/DQoNCkkgd2FzIHRoaW5raW5nIG9mIHRoZSBj YXNlIHdoZW4gdGhlIGNvc3Qgb2YgdGhlIGZwdSBzYXZlIGlzIGdyZWF0ZXINCnRoYW4gdGhlIHNh dmluZy4NClRoaXMgbWlnaHQgYmUgdHJ1ZSBmb3IgKHNheSkgYSBjcmMgb24gYSBzaG9ydCBidWZm ZXIuDQoNCj4gPiBUaGUgcmV0dXJuIHZhbHVlIGZyb20ga2VybmVsX2ZwdV9iZWdpbigpIG91Z2h0 IHRvIGluZGljYXRlIHdoaWNoDQo+ID4gcmVnaXN0ZXJzIGFyZSBhdmFpbGFibGUgLSBub25lLCBT U0UsIFNTRTIsIEFWWCwgQVZYNTEyIGV0Yy4NCj4gPiBTbyBjb2RlIGNhbiB1c2UgYW4gYXBwcm9w cmlhdGUgaW1wbGVtZW50YXRpb24uDQo+ID4gKEkndmUgbm90IGxvb2tlZCB0byBzZWUgaWYgdGhp cyBpcyBhbHJlYWR5IHRoZSBjYXNlISkNCj4gDQo+IEVpdGhlciBldmVyeXRoaW5nIGlzIHNhdmVk IG9yIG5vdGhpbmcuIFNvIGlmIFNTRSByZWdpc3RlcnMgYXJlIHNhdmVkDQo+IHRoZW4gQVZYNTEy IGFyZSwgdG9vLg0KDQooSSBrbm93IHRoYXQgLSBJJ3ZlIHdyaXR0ZW4gZnB1IHNhdmUgY29kZSBm b3IgQVZYKS4NCkkgd2FzIHRoaW5raW5nIHRoYXQgdGhlIHJldHVybiB2YWx1ZSB3b3VsZCBkZXBl bmQgb24gd2hhdCB0aGUgY3B1IHN1cHBvcnRzLg0KDQpJbiBmYWN0LCBnaXZlbiBzb21lIHRhbGsg YWJvdXQgYmlnLWxpdHRsZSBjcHVzIGl0IG1pZ2h0IGJlIHdvcnRoIGJlaW5nDQphYmxlIHRvIGFz ayBmb3IgYSBzcGVjaWZpYyByZWdpc3RlciBzZXQuDQpQb3RlbnRpYWxseSB0aGF0IGNvdWxkIGNh dXNlIGEgcHJvY2Vzc29yIHN3aXRjaC4NCg0KCURhdmlkDQoNCi0NClJlZ2lzdGVyZWQgQWRkcmVz cyBMYWtlc2lkZSwgQnJhbWxleSBSb2FkLCBNb3VudCBGYXJtLCBNaWx0b24gS2V5bmVzLCBNSzEg MVBULCBVSw0KUmVnaXN0cmF0aW9uIE5vOiAxMzk3Mzg2IChXYWxlcykNCg==