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Thu, 22 Mar 2018 03:34:55 -0700 Received: from [156.67.243.126] (helo=AcuMS.aculab.com) by out4a.electric.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-SHA384:256) (Exim 4.90_1) (envelope-from ) id 1eyxYT-0005ti-UF; Thu, 22 Mar 2018 03:34:45 -0700 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, 22 Mar 2018 10:35:44 +0000 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, 22 Mar 2018 10:35:44 +0000 From: David Laight To: 'Linus Torvalds' , Ingo Molnar CC: Thomas Gleixner , Rahul Lakkireddy , "x86@kernel.org" , "linux-kernel@vger.kernel.org" , "netdev@vger.kernel.org" , "mingo@redhat.com" , "hpa@zytor.com" , "davem@davemloft.net" , "akpm@linux-foundation.org" , "ganeshgr@chelsio.com" , "nirranjan@chelsio.com" , "indranil@chelsio.com" , Andy Lutomirski , Peter Zijlstra , Fenghua Yu , Eric Biggers Subject: RE: [RFC PATCH 0/3] kernel: add support for 256-bit IO access Thread-Topic: [RFC PATCH 0/3] kernel: add support for 256-bit IO access Thread-Index: AQHTv43TjMVMzNQoikSg1VH837bpVaPXnqXggAAJp4CAAAH+gIADWB3UgAELVpA= Date: Thu, 22 Mar 2018 10:35:43 +0000 Message-ID: <2f5cb27711e741fba77846574e72eb62@AcuMS.aculab.com> References: <7f0ddb3678814c7bab180714437795e0@AcuMS.aculab.com> <7f8d811e79284a78a763f4852984eb3f@AcuMS.aculab.com> <20180320082651.jmxvvii2xvmpyr2s@gmail.com> <20180321074634.dzpyjz3ia46snodh@gmail.com> In-Reply-To: Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.33] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-Outbound-IP: 156.67.243.126 X-Env-From: David.Laight@ACULAB.COM X-Proto: esmtps X-Revdns: X-HELO: AcuMS.aculab.com X-TLS: TLSv1.2:ECDHE-RSA-AES256-SHA384:256 X-Authenticated_ID: X-PolicySMART: 3396946, 3397078 X-Virus-Status: Scanned by VirusSMART (c) X-Virus-Status: Scanned by VirusSMART (s) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogU2VudDogMjEgTWFyY2ggMjAxOCAxODoxNg0KPiBUbzogSW5nbyBNb2xuYXINCi4uLg0K PiBBbGwgdGhpcyB0byBkbyBhIDMyLWJ5dGUgUElPIGFjY2Vzcywgd2l0aCBhYnNvbHV0ZWx5IHpl cm8gZGF0YSByaWdodA0KPiBub3cgb24gd2hhdCB0aGUgd2luIGlzPw0KPiANCj4gWWVzLCB5ZXMs IEkgY2FuIGZpbmQgYW4gSW50ZWwgd2hpdGUtcGFwZXIgdGhhdCB0YWxrcyBhYm91dCBzZXR0aW5n IFdDDQo+IGFuZCB0aGVuIHVzaW5nIHhtbSBhbmQgeW1tIGluc3RydWN0aW9ucyB0byB3cml0ZSBh IHNpbmdsZSA2NC1ieXRlDQo+IGJ1cnN0IG92ZXIgUENJZSwgYW5kIEkgYXNzdW1lIHRoYXQgaXMg d2hlcmUgdGhlIGNvZGUgYW5kIGlkZWEgY2FtZQ0KPiBmcm9tLiBCdXQgSSBkb24ndCBhY3R1YWxs eSBzZWUgYW55IHJlYXNvbiB3aHkgYSBidXJzdCBvZiA4IHJlZ3VsYXINCj4gcXVhZC13b3JkIGJ5 dGVzIHdvdWxkbid0IGNhdXNlIGEgNjQtYnl0ZSBidXJzdCB3cml0ZSB0b28uDQoNClRoZSBiaWcg Z2FpbiBpcyBmcm9tIHdpZGUgUENJZSByZWFkcywgbm90IHdyaXRlcy4NCldyaXRlcyB0byB1bmNh Y2hlZCBsb2NhdGlvbnMgKHdpdGhvdXQgV0MpIGFyZSBhbG1vc3QgY2VydGFpbmx5IHJlcXVpcmVk DQp0byBnZW5lcmF0ZSB0aGUgJ29idmlvdXMnIFBDSWUgVExQLCBvdGhlcndpc2UgdGhpbmdzIGFy ZSBsaWtlbHkgdG8gYnJlYWsuDQoNCj4gU28gcmlnaHQgbm93IHRoaXMgaXMgZm9yIF9vbmVfIG9k ZCByZG1hIGNvbnRyb2xsZXIsIHdpdGggYWJzb2x1dGVseQ0KPiBfemVyb18gcGVyZm9ybWFuY2Ug bnVtYmVycywgYW5kIGEgdmVyeSBoaWdoIGxpa2VsaWhvb2QgdGhhdCBpdCBkb2VzDQo+IG5vdCBt YXR0ZXIgaW4gdGhlIGxlYXN0Lg0KPiANCj4gQW5kIGlmIHRoZXJlIGFyZSBzb21lIGF0b21pY2l0 eSBjb25jZXJucyAoIndlIG5lZWQgdG8gZ3VhcmFudGVlIGENCj4gc2luZ2xlIGF0b21pYyBhY2Nl c3MgZm9yIHJhY2UgY29uZGl0aW9ucyB3aXRoIHRoZSBoYXJkd2FyZSIpLCB0aGV5IGFyZQ0KPiBw cm9iYWJseSBib2d1cyBhbmQgbWlzcGxhY2VkIGFueXdheSwgc2luY2UNCj4gDQo+ICAoYSkgd2Ug Y2FuJ3QgZ3VhcmFudGVlIHRoYXQgQVZYMiBleGlzdHMgaW4gdGhlIGZpcnN0IHBsYWNlDQoNCkFu eSBjb2RlIHdvdWxkIG5lZWQgdG8gYmUgaW4gbWVtY3B5X2Zyb21pbygpLCBub3QgaW4gZXZlcnkg ZHJpdmVyIHRoYXQNCm1pZ2h0IGJlbmVmaXQuDQpUaGVuIGZhbGxiYWNrIGNvZGUgY2FuIGJlIHVz ZWQgaWYgdGhlIHJlZ2lzdGVycyBhcmVuJ3QgYXZhaWxhYmxlLg0KDQo+ICAoYikgd2UgY2FuJ3Qg Z3VhcmFudGVlIHRoYXQgJXltbSByZWdpc3RlciB3cml0ZSB3aWxsIHNob3cgdXAgb24gYW55DQo+ IGJ1cyBhcyBhIHNpbmdsZSB3cml0ZSB0cmFuc2FjdGlvbiBhbnl3YXkNCg0KTWlzYWxpZ25lZCA4 IGJ5dGUgYWNjZXNzZXMgZ2VuZXJhdGUgYSBzaW5nbGUgUENJZSBUTFAuDQpJIGNhbiBsb29rIGF0 IHdoYXQgaGFwcGVucyBmb3IgQVZYMiB0cmFuc2ZlcnMgbGF0ZXIuDQpJJ3ZlIGdvdCBjb2RlIHRo YXQgbW1hcCgpcyBQQ0llIGFkZHJlc3NlcyBpbnRvIHVzZXIgc3BhY2UsIGFuZCBjYW4NCmxvb2sg YXQgdGhlIFRMUCAoaW5kaXJlY3RseSB0aHJvdWdoIHRyYWNpbmcgb24gYW4gZnBnYSB0YXJnZXQp Lg0KSnVzdCBuZWVkIHRvIHNldCBzb21ldGhpbmcgdXAgdGhhdCB1c2VzIEFWWCBjb3BpZXMuDQoN Cj4gU28gYXMgZmFyIGFzIEkgY2FuIHRlbGwsIHRoZXJlIGFyZSBiYXNpY2FsbHkgKnplcm8qIHVw c2lkZXMsIGFuZCBhIGxvdA0KPiBvZiBwb3RlbnRpYWwgZG93bnNpZGVzLg0KDQpUaGVyZSBhcmUg c29tZSB1cHNpZGVzLg0KSSdsbCBkbyBhIHBlcmZvcm1hbmNlIG1lYXN1cmVtZW50IGZvciByZWFk cy4NCg0KCURhdmlkDQoNCg==