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[37.119.128.179]) by smtp.gmail.com with ESMTPSA id y20sm4862456ejm.44.2021.06.14.16.21.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 14 Jun 2021 16:21:12 -0700 (PDT) Date: Tue, 15 Jun 2021 01:21:07 +0200 From: Matteo Croce To: David Miller Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, peppe.cavallaro@st.com, alexandre.torgue@foss.st.com, kuba@kernel.org, palmer@dabbelt.com, paul.walmsley@sifive.com, drew@beagleboard.org, kernel@esmil.dk Subject: Re: [PATCH net-next] stmmac: align RX buffers Message-ID: <20210615012107.577ead86@linux.microsoft.com> In-Reply-To: <20210614.125111.1519954686951337716.davem@davemloft.net> References: <20210614022504.24458-1-mcroce@linux.microsoft.com> <20210614.125111.1519954686951337716.davem@davemloft.net> Organization: Microsoft X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; x86_64-redhat-linux-gnu) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210614_162115_004024_55DC150A X-CRM114-Status: GOOD ( 14.89 ) 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 T24gTW9uLCAxNCBKdW4gMjAyMSAxMjo1MToxMSAtMDcwMCAoUERUKQpEYXZpZCBNaWxsZXIgPGRh dmVtQGRhdmVtbG9mdC5uZXQ+IHdyb3RlOgoKPiAKPiBCdXQgdGhvaXMgbWVhbnMgdGhlIGV0aGVy bmV0IGhlYWRlciB3aWxsIGJlIG1pc2FsaXVnbmVkIGFuZCB0aGlzIHdpbGwKPiBraWxsIHBlcmZv cm1hbmNlIG9uIHNvbWUgY3B1cyBhcyBtaXNhbGlnbmVkIGFjY2Vzc2VkIGFyZSByZXNvbHZlZAo+ IHdpb3RoIGEgdHJhcCBoYW5kbGVyLgo+IAo+IEV2ZW4gb24gY3B1cyB0aGF0IGRvbid0IHRyYXAs IHRoZSBhY2Nlc3Mgd2lsbCBiZSBzbG93ZXIuCj4gCj4gVGhhbmtzLgoKSXNuJ3QgdGhlIElQIGhl YWRlciB3aGljaCBzaG91bGQgYmUgYWxpZ25lZCB0byBhdm9pZCBleHBlbnNpdmUgdHJhcHM/CkZy b20gaW5jbHVkZS9saW51eC9za2J1ZmYuaDoKCsKgKiBTaW5jZSBhbiBldGhlcm5ldCBoZWFkZXIg aXMgMTQgYnl0ZXMgbmV0d29yayBkcml2ZXJzIG9mdGVuIGVuZCB1cCB3aXRoCsKgKiB0aGUgSVAg aGVhZGVyIGF0IGFuIHVuYWxpZ25lZCBvZmZzZXQuIFRoZSBJUCBoZWFkZXIgY2FuIGJlIGFsaWdu ZWQgYnkKwqAqIHNoaWZ0aW5nIHRoZSBzdGFydCBvZiB0aGUgcGFja2V0IGJ5IDIgYnl0ZXMuIERy aXZlcnMgc2hvdWxkIGRvIHRoaXMKwqAqIHdpdGg6CsKgKgrCoCogc2tiX3Jlc2VydmUoc2tiLCBO RVRfSVBfQUxJR04pOwoKQnV0IHRoZSBwcm9ibGVtIGhlcmUgcmVhbGx5IGlzIG5vdCB0aGUgaGVh ZGVyIGFsaWdubWVudCwgdGhlIHByb2JsZW0gaXMKdGhhdCB0aGUgcnggYnVmZmVyIGlzIGNvcGll ZCBpbnRvIGFuIHNrYiwgYW5kIHRoZSB0d28gYnVmZmVycyBoYXZlCmRpZmZlcmVudCBhbGlnbm1l bnRzLgpJZiBJIGFkZCB0aGlzIHByaW50LCBJIGdldCB0aGlzIGZvciBldmVyeSBwYWNrZXQ6Cgot LS0gYS9kcml2ZXJzL25ldC9ldGhlcm5ldC9zdG1pY3JvL3N0bW1hYy9zdG1tYWNfbWFpbi5jCkBA IC01NDYwLDYgKzU0NjAsOCBAQCBzdGF0aWMgaW50IHN0bW1hY19yeChzdHJ1Y3Qgc3RtbWFjX3By aXYgKnByaXYsIGludCBsaW1pdCwgdTMyIHF1ZXVlKQorICAgICAgICAgICAgICAgcHJpbnRrKCJz a2ItPmRhdGEgYWxpZ25tZW50OiAlbHVcbiIsICh1aW50cHRyX3Qpc2tiLT5kYXRhICYgNyk7Cisg ICAgICAgICAgICAgICBwcmludGsoInhkcC5kYXRhIGFsaWdubWVudDogJWx1XG4iICwgKHVpbnRw dHJfdCl4ZHAuZGF0YSAmIDcpOwogICAgICAgICAgICAgICAgc2tiX2NvcHlfdG9fbGluZWFyX2Rh dGEoc2tiLCB4ZHAuZGF0YSwgYnVmMV9sZW4pOwoKWyAxMDYwLjk2Nzc2OF0gc2tiLT5kYXRhIGFs aWdubWVudDogMgpbIDEwNjAuOTcxMTc0XSB4ZHAuZGF0YSBhbGlnbm1lbnQ6IDAKWyAxMDYxLjk2 NzU4OV0gc2tiLT5kYXRhIGFsaWdubWVudDogMgpbIDEwNjEuOTcwOTk0XSB4ZHAuZGF0YSBhbGln bm1lbnQ6IDAKCkFuZCBtYW55IGFyY2hpdGVjdHVyZXMgZG8gYW4gb3B0aW1pemVkIG1lbWNweSB3 aGVuIHRoZSBsb3cgb3JkZXIgYml0cyBvZiB0aGUKdHdvIHBvaW50ZXJzIG1hdGNoLCB0byBuYW1l IGEgZmV3OgoKYXJjaC9hbHBoYS9saWIvbWVtY3B5LmM6CgkvKiBJZiBib3RoIHNvdXJjZSBhbmQg ZGVzdCBhcmUgd29yZCBhbGlnbmVkIGNvcHkgd29yZHMgKi8KCWlmICghKCh1bnNpZ25lZCBpbnQp ZGVzdF93ICYgMykgJiYgISgodW5zaWduZWQgaW50KXNyY193ICYgMykpIHsKCmFyY2gveHRlbnNh L2xpYi9tZW1jb3B5LlM6CgkvKgoJICogRGVzdGluYXRpb24gYW5kIHNvdXJjZSBhcmUgd29yZC1h bGlnbmVkLCB1c2Ugd29yZCBjb3B5LgoJICovCgkjIGNvcHkgMTYgYnl0ZXMgcGVyIGl0ZXJhdGlv biBmb3Igd29yZC1hbGlnbmVkIGRzdCBhbmQgd29yZC1hbGlnbmVkIHNyYwoKYXJjaC9vcGVucmlz Yy9saWIvbWVtY3B5LmM6CgkvKiBJZiBib3RoIHNvdXJjZSBhbmQgZGVzdCBhcmUgd29yZCBhbGln bmVkIGNvcHkgd29yZHMgKi8KCWlmICghKCh1bnNpZ25lZCBpbnQpZGVzdF93ICYgMykgJiYgISgo dW5zaWduZWQgaW50KXNyY193ICYgMykpIHsKCkFuZCBzbyBvbi4gV2l0aCBteSBwYXRjaCBJICht aXMpYWxpZ24gdGhlIHR3byBidWZmZXIgYXQgYW4gb2Zmc2V0IDIKKE5FVF9JUF9BTElHTikgc28g dGhlIGRhdGEgY2FuIGJlIGNvcGllZCBmYXN0ZXI6CgpbICAgMTYuNjQ4NDg1XSBza2ItPmRhdGEg YWxpZ25tZW50OiAyClsgICAxNi42NTE4OTRdIHhkcC5kYXRhIGFsaWdubWVudDogMgpbICAgMTYu NzE0MjYwXSBza2ItPmRhdGEgYWxpZ25tZW50OiAyClsgICAxNi43MTc2ODhdIHhkcC5kYXRhIGFs aWdubWVudDogMgoKRG9lcyB0aGlzIG1ha2Ugc2Vuc2U/CgpSZWdhcmRzLAotLSAKcGVyIGFzcGVy YSBhZCB1cHN0cmVhbQoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX18KbGludXgtcmlzY3YgbWFpbGluZyBsaXN0CmxpbnV4LXJpc2N2QGxpc3RzLmluZnJhZGVh ZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1y aXNjdgo=