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Thu, 10 Sep 2020 08:27:07 -0400 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-242-gUIwh0VwNUeXA06T7Iw4zQ-1; Thu, 10 Sep 2020 13:26:54 +0100 X-MC-Unique: gUIwh0VwNUeXA06T7Iw4zQ-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) by AcuMS.aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Thu, 10 Sep 2020 13:26:53 +0100 Received: from AcuMS.Aculab.com ([fe80::43c:695e:880f:8750]) by AcuMS.aculab.com ([fe80::43c:695e:880f:8750%12]) with mapi id 15.00.1347.000; Thu, 10 Sep 2020 13:26:53 +0100 From: David Laight To: David Laight , 'Christophe Leroy' , 'Linus Torvalds' , Segher Boessenkool CC: linux-arch , Kees Cook , the arch/x86 maintainers , "Nick Desaulniers" , Linux Kernel Mailing List , Alexey Dobriyan , "Luis Chamberlain" , Al Viro , linux-fsdevel , linuxppc-dev , Christoph Hellwig Subject: RE: remove the last set_fs() in common code, and remove it for x86 and powerpc v3 Thread-Topic: remove the last set_fs() in common code, and remove it for x86 and powerpc v3 Thread-Index: AQHWhvDyD2c/lZfV3kC0Ftay5UVebqlhgjnw///zuACAABnIEIAAOoMg Date: Thu, 10 Sep 2020 12:26:53 +0000 Message-ID: <5050b43687c84515a49b345174a98822@AcuMS.aculab.com> References: <20200903142242.925828-1-hch@lst.de> <20200903142803.GM1236603@ZenIV.linux.org.uk> <20200909184001.GB28786@gate.crashing.org> <3beb8b019e4a4f7b81fdb1bc68bd1e2d@AcuMS.aculab.com> <186a62fc-042c-d6ab-e7dc-e61b18945498@csgroup.eu> <59a64e9a210847b59f70f9bd2d02b5c3@AcuMS.aculab.com> In-Reply-To: <59a64e9a210847b59f70f9bd2d02b5c3@AcuMS.aculab.com> Accept-Language: en-GB, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com X-Mimecast-Spam-Score: 0.001 X-Mimecast-Originator: aculab.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Content-Language: en-US Sender: linux-arch-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arch@vger.kernel.org RnJvbTogRGF2aWQgTGFpZ2h0DQo+IFNlbnQ6IDEwIFNlcHRlbWJlciAyMDIwIDEwOjI2DQouLi4N Cj4gPiA+IEkgaGFkIGFuICdpbnRlcmVzdGluZycgaWRlYS4NCj4gPiA+DQo+ID4gPiBDYW4geW91 IHVzZSBhIGxvY2FsIGFzbSByZWdpc3RlciB2YXJpYWJsZSBhcyBhbiBpbnB1dCBhbmQgb3V0cHV0 IHRvDQo+ID4gPiBhbiAnYXNtIHZvbGF0aWxlIGdvdG8nIHN0YXRlbWVudD8NCj4gPiA+DQo+ID4g PiBXZWxsIHlvdSBjYW4gLSBidXQgaXMgaXQgZ3VhcmFudGVlZCB0byB3b3JrIDotKQ0KPiA+ID4N Cj4gPg0KPiA+IFdpdGggZ2NjIGF0IGxlYXN0IGl0IHNob3VsZCB3b3JrIGFjY29yZGluZyB0bw0K PiA+IGh0dHBzOi8vZ2NjLmdudS5vcmcvb25saW5lZG9jcy9nY2MvTG9jYWwtUmVnaXN0ZXItVmFy aWFibGVzLmh0bWwNCj4gPg0KPiA+IFRoZXkgZXZlbiBleHBsaWNpdGVseSB0ZWxsOiAiVGhlIG9u bHkgc3VwcG9ydGVkIHVzZSBmb3IgdGhpcyBmZWF0dXJlIGlzDQo+ID4gdG8gc3BlY2lmeSByZWdp c3RlcnMgZm9yIGlucHV0IGFuZCBvdXRwdXQgb3BlcmFuZHMgd2hlbiBjYWxsaW5nIEV4dGVuZGVk DQo+ID4gYXNtICINCj4gDQo+IEEgcXVpY2sgdGVzdCBpc24ndCBnb29kLi4uLg0KPiANCj4gaW50 IGJhcihjaGFyICp6KQ0KPiB7DQo+ICAgICAgICAgX19sYWJlbF9fIGxhYmVsOw0KPiAgICAgICAg IHJlZ2lzdGVyIGludCBlYXggYXNtICgiZWF4IikgPSA2Ow0KPiAgICAgICAgIGFzbSB2b2xhdGls ZSBnb3RvICgiIG1vdiAkMSwgJSVlYXgiIDo6OiAiZWF4IiA6IGxhYmVsKTsNCj4gbGFiZWw6DQo+ ICAgICAgICAgcmV0dXJuIGVheDsNCj4gfQ0KPiANCj4gMDAwMDAwMDAwMDAwMDA0MCA8YmFyPjoN Cj4gICA0MDogICBiOCAwMSAwMCAwMCAwMCAgICAgICAgICBtb3YgICAgJDB4MSwlZWF4DQo+ICAg NDU6ICAgYjggMDYgMDAgMDAgMDAgICAgICAgICAgbW92ICAgICQweDYsJWVheA0KPiAgIDRhOiAg IGMzICAgICAgICAgICAgICAgICAgICAgIHJldHENCj4gDQo+IGFsdGhvdWdoIGFkZGluZzoNCj4g ICAgICAgICBhc20gdm9sYXRpbGUgKCIiIDogIityIiAoZWF4KSk7DQo+IGVpdGhlciBzaWRlIG9m IHRoZSAnYXNtIHZvbGF0aWxlIGdvdG8nIGRvZXMgZml4IGl0Lg0KDQpBY3R1YWxseSB0aGlzIGlz IHByZXR0eSBzb3VuZDoNCglfX2xhYmVsX18gbGFiZWw7DQoJcmVnaXN0ZXIgaW50IGVheCBhc20g KCJlYXgiKTsNCgkvLyBFbnN1cmUgZWF4IGNhbid0IGJlIHJlbG9hZGVkIGZyb20gYW55d2hlcmUN CgkvLyBJbiBwYXJ0aWN1bGFyIGl0IGNhbid0IGJlIHJlbG9hZGVkIGFmdGVyIHRoZSBhc20gZ290 byBsaW5lDQoJYXNtIHZvbGF0aWxlICgiIiA6ICI9ciIgKGVheCkpOw0KCS8vIFByb3ZpZGVkIGdj YyBkb2Vzbid0IHNhdmUgZWF4IGhlcmUuLi4NCglhc20gdm9sYXRpbGUgZ290byAoInh4eHh4IiA6 OjogImVheCIgOiBsYWJlbCk7DQoJLy8gLi4uIGFuZCByZWxvYWQgdGhlIHNhdmVkIHZhbHVlIGhl cmUuDQoJLy8gVGhlIGlucHV0IHZhbHVlIGhlcmUgd2lsbCBiZSB0aGF0IG1vZGlmaWVkIGJ5IHRo ZSAnYXNtIGdvdG8nLg0KCS8vIFNpbmNlIHRoaXMgbW9kaWZpZXMgZWF4IGl0IGNhbid0IGJlIG1v dmVkIGJlZm9yZSB0aGUgJ2FzbSBnb3RvJy4NCglhc20gdm9sYXRpbGUgKCIiIDogIityIiAoZWF4 KSk7DQoJLy8gU28gaGVyZSBlYXggbXVzdCBjb250YWluIHRoZSB2YWx1ZSBzZXQgYnkgdGhlICJ4 eHh4eCIgaW5zdHJ1Y3Rpb25zLg0KDQogICAgRGF2aWQNCg0KLQ0KUmVnaXN0ZXJlZCBBZGRyZXNz IExha2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRvbiBLZXluZXMsIE1LMSAx UFQsIFVLDQpSZWdpc3RyYXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K