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[54.250.108.108]) by smtp.gmail.com with ESMTPSA id z16sm1734052pgu.21.2021.08.17.00.32.53 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 17 Aug 2021 00:32:56 -0700 (PDT) Cc: akira.tsukamoto@gmail.com Subject: Re: [PATCH 0/1] __asm_copy_to-from_user: Reduce more byte_copy To: Qiu Wenbo , Paul Walmsley , Palmer Dabbelt , Guenter Roeck , Geert Uytterhoeven , Albert Ou , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org References: <65f08f01-d4ce-75c2-030b-f8759003e061@gmail.com> <61187c37.1c69fb81.ed9bd.cc45SMTPIN_ADDED_BROKEN@mx.google.com> <611a33ac.1c69fb81.12aae.89a5SMTPIN_ADDED_BROKEN@mx.google.com> From: Akira Tsukamoto Message-ID: <62b045c0-28ae-5d59-a91b-a2edaf060a62@gmail.com> Date: Tue, 17 Aug 2021 16:32:52 +0900 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 MIME-Version: 1.0 In-Reply-To: <611a33ac.1c69fb81.12aae.89a5SMTPIN_ADDED_BROKEN@mx.google.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210817_003259_913549_BBD3A8A3 X-CRM114-Status: GOOD ( 14.80 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org SGkgUWl1LAoKCk9uIDgvMTYvMjAyMSA2OjQ1IFBNLCBRaXUgV2VuYm8gd3JvdGU6Cj4gSGkgQWtp cmEsCj4gCj4gCj4gSSBjYW4gcmVwcm9kdWNlIGl0IG9uIG15IEhpRml2ZSBVbm1hdGNoZWQgd2l0 aCBhIGN1c3RvbSBHZW50b28gcm9vdGZzLiBBcyBwb2ludGVkIG91dCBieSBBbmRyZWFzLCB0aGVy ZSBtaWdodCBiZSBhIG1pc3NpbmcgZml4dXAuwqAgSSdtIGdvaW5nIHRvIGRlYnVnIHRoaXMgaXNz dWUgbXlzZWxmIHNpbmNlIEkgY2FuIHJlcHJvZHVjZSBpdCBmYWlybHkgc3RhYmxlLgoKQWghIE5v dyBJIHVuZGVyc3RhbmQgdGhlIGJ1Zy4KCj4gKyAgICBSRUdfTCAgICBhNSwgMChhMSkKCnNob3Vs ZCBiZSAKCisgICAgZml4dXAgUkVHX0wgICAgYTUsIDAoYTEpCgpJZiB5b3UgZG8gbm90IG1pbmQs IGNvdWxkIHlvdSBtYWtlIHRoZSBwYXRjaCB0byBhZGQgJ2ZpeHVwJyB0byBhbGwgUkVHX1MgYW5k IFJFR19MPwpUaGVuIEkgd2lsbCByZXN1Ym1pdCB0aGVtIHRvIFBhbG1lciB3aXRoIHlvdXIgcGF0 Y2guCgpUaGFua3MsCgpBa2lyYQoKPiAKPiAKPiBRaXUKPiAKPiAKPiBPbiA4LzE2LzIxIDE0OjI0 LCBBa2lyYSBUc3VrYW1vdG8gd3JvdGU6Cj4+IEhpIFFpdSwKPj4KPj4gT24gOC8xNS8yMDIxIDEx OjMwIEFNLCBRaXUgV2VuYm8gd3JvdGU6Cj4+PiBIaSBBa2lyYSwKPj4+Cj4+Pgo+Pj4gVGhpcyBw YXRjaCBicmVha3MgbXkgdXNlcnNwYWNlwqAgYW5kIEkgY2FuJ3QgYm9vdCBteSBzeXN0ZW0gYWZ0 ZXIgYXBwbHlpbmcgdGhpcy4gSGVyZSBpcyB0aGUgc3RhY2sgdHJhY2U6Cj4+Pgo+Pj4KPj4+IFvC oMKgIDEwLjM0OTA4MF0gVW5hYmxlIHRvIGhhbmRsZSBrZXJuZWwgTlVMTCBwb2ludGVyIGRlcmVm ZXJlbmNlIGF0IHZpcnR1YWwgYWRkcmVzcyAwMDAwMDAwMDAwMDAwMDAwCj4+PiBbwqDCoCAxMC4z NTcxMTZdIE9vcHMgWyMxNV0KPj4+IFvCoMKgIDEwLjM1OTQzM10gQ1BVOiAyIFBJRDogMTY5IENv bW06IChuZXR3b3JrZCkgVGFpbnRlZDogRyBEwqDCoMKgwqDCoMKgwqDCoMKgwqAgNS4xNC4wLXJj NSAjNTMKPj4+IFvCoMKgIDEwLjM2NzQyMl0gSGFyZHdhcmUgbmFtZTogU2lGaXZlIEhpRml2ZSBV bm1hdGNoZWQgQTAwIChEVCkKPj4+IFvCoMKgIDEwLjM3Mjk4MV0gZXBjIDogX19hc21fY29weV9m cm9tX3VzZXIrMHg0OC8weGYwCj4+PiBbwqDCoCAxMC4zNzc1ODRdwqAgcmEgOiBfY29weV9mcm9t X3VzZXIrMHgyOC8weDY4Cj4+PiBbwqDCoCAxMC4zODE3NTRdIGVwYyA6IGZmZmZmZmZmODA5OWEy ODAgcmEgOiBmZmZmZmZmZjgwMzYxNGE4IHNwIDogZmZmZmZmZDAwNDE2YmQ5MAo+Pj4gW8KgwqAg MTAuMzg4OTYzXcKgIGdwIDogZmZmZmZmZmY4MTFlZTU0MCB0cCA6IGZmZmZmZmUwODQxYjM2ODAg dDAgOiBmZmZmZmZkMDA0MTZiZGUwCj4+PiBbwqDCoCAxMC4zOTYxNzJdwqAgdDEgOiBmZmZmZmZk MDA0MTZiZGQ4IHQyIDogMDAwMDAwM2ZmMDljYTNhMCBzMCA6IGZmZmZmZmQwMDQxNmJkYzAKPj4+ IFvCoMKgIDEwLjQwMzM4MV3CoCBzMSA6IDAwMDAwMDAwMDAwMDAwMDAgYTAgOiBmZmZmZmZkMDA0 MTZiZGQ4IGExIDogMDAwMDAwMDAwMDAwMDAwMAo+Pj4gW8KgwqAgMTAuNDEwNTkwXcKgIGEyIDog MDAwMDAwMDAwMDAwMDAxMCBhMyA6IDAwMDAwMDAwMDAwMDAwNDAgYTQgOiBmZmZmZmZkMDA0MTZi ZTE4Cj4+PiBbwqDCoCAxMC40MTc4MDBdwqAgYTUgOiAwMDAwMDAzZmZmZmZmZmYwIGE2IDogMDAw MDAwMDAwMDAwMDAwZiBhNyA6IGZmZmZmZmUwODVkNTg1NDAKPj4+IFvCoMKgIDEwLjQyNTAwOV3C oCBzMiA6IDAwMDAwMDAwMDAwMDAwMTAgczMgOiBmZmZmZmZkMDA0MTZiZGQ4IHM0IDogMDAwMDAw MDAwMDAwMDAwMgo+Pj4gW8KgwqAgMTAuNDMyMjE4XcKgIHM1IDogMDAwMDAwMDAwMDAwMDAwMCBz NiA6IDAwMDAwMDAwMDAwMDAwMDAgczcgOiBmZmZmZmZlMDg0MWIzNjgwCj4+PiBbwqDCoCAxMC40 Mzk0MjddwqAgczggOiAwMDAwMDAyYWFkNzg4MDQwIHM5IDogMDAwMDAwMDAwMDAwMDAwMCBzMTA6 IDAwMDAwMDAwMDAwMDAwMDEKPj4+IFvCoMKgIDEwLjQ0NjYzNl3CoCBzMTE6IDAwMDAwMDAwMDAw MDAwMDAgdDMgOiAwMDAwMDAwMDAwMDAwMDAwIHQ0IDogMDAwMDAwMDAwMDAwMDAwMQo+Pj4gW8Kg wqAgMTAuNDUzODQ1XcKgIHQ1IDogMDAwMDAwMDAwMDAwMDAxMCB0NiA6IDAwMDAwMDAwMDAwNDAw MDAKPj4+IFvCoMKgIDEwLjQ1OTE0NF0gc3RhdHVzOiAwMDAwMDAwMjAwMDQwMTIwIGJhZGFkZHI6 IDAwMDAwMDAwMDAwMDAwMDAgY2F1c2U6IDAwMDAwMDAwMDAwMDAwMGQKPj4+IFvCoMKgIDEwLjQ2 NzA0OV0gWzxmZmZmZmZmZjgwOTlhMjgwPl0gX19hc21fY29weV9mcm9tX3VzZXIrMHg0OC8weGYw Cj4+PiBbwqDCoCAxMC40NzI5NTVdIFs8ZmZmZmZmZmY4MDA5YTU2Mj5dIGRvX3NlY2NvbXArMHg2 Mi8weDhiZQo+Pj4gW8KgwqAgMTAuNDc4MDc5XSBbPGZmZmZmZmZmODAwOWFmNTg+XSBwcmN0bF9z ZXRfc2VjY29tcCsweDI0LzB4MzIKPj4+IFvCoMKgIDEwLjQ4MzcyNV0gWzxmZmZmZmZmZjgwMDIw NzU2Pl0gc3lzX3ByY3RsKzB4ZjYvMHg0NTAKPj4+IFvCoMKgIDEwLjQ4ODc2M10gWzxmZmZmZmZm ZjgwMDAzNGYyPl0gcmV0X2Zyb21fc3lzY2FsbCsweDAvMHgyCj4+Pgo+Pj4KPj4+IFRoZSBQQyBy ZWdpc3RlciBwb2ludHMgdG8gdGhpcyBsaW5lOgo+Pj4KPj4+ICsxOgo+Pj4gK8KgwqDCoCBSRUdf TMKgwqDCoCBhNSwgMChhMSkKPj4gVGhhbmtzIGZvciB0ZXN0aW5nISBEbyB5b3UgbWluZCB0ZWFj aGluZyBtZSBob3cgdG8gcmVwcm9kdWNlIHRoZSBlcnJvcj8KPj4KPj4gQWtpcmEKPj4KPiAKPiAK PiAKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4 LXJpc2N2IG1haWxpbmcgbGlzdApsaW51eC1yaXNjdkBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6 Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtcmlzY3YK