Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Received-SPF: None (esa2.hc3370-68.iphmx.com: no sender
  authenticity information available from domain of
  sergey.dyasli@citrix.com) identity=pra;
  client-ip=162.221.158.21; receiver=esa2.hc3370-68.iphmx.com;
  envelope-from="sergey.dyasli@citrix.com";
  x-sender="sergey.dyasli@citrix.com";
  x-conformance=sidf_compatible
Received-SPF: Pass (esa2.hc3370-68.iphmx.com: domain of
  sergey.dyasli@citrix.com designates 162.221.158.21 as
  permitted sender) identity=mailfrom;
  client-ip=162.221.158.21; receiver=esa2.hc3370-68.iphmx.com;
  envelope-from="sergey.dyasli@citrix.com";
  x-sender="sergey.dyasli@citrix.com";
  x-conformance=sidf_compatible; x-record-type="v=spf1";
  x-record-text="v=spf1 ip4:209.167.231.154 ip4:178.63.86.133
  ip4:195.66.111.40/30 ip4:85.115.9.32/28 ip4:199.102.83.4
  ip4:192.28.146.160 ip4:192.28.146.107 ip4:216.52.6.88
  ip4:216.52.6.188 ip4:162.221.158.21 ip4:162.221.156.83
  ip4:168.245.78.127 ~all"
Received-SPF: None (esa2.hc3370-68.iphmx.com: no sender
  authenticity information available from domain of
  postmaster@mail.citrix.com) identity=helo;
  client-ip=162.221.158.21; receiver=esa2.hc3370-68.iphmx.com;
  envelope-from="sergey.dyasli@citrix.com";
  x-sender="postmaster@mail.citrix.com";
  x-conformance=sidf_compatible
IronPort-SDR: vMRjz/muvrzwffZ9gPdAkzOUaYy9fd6F78rjNgWjA+E4IrmOT4iUvZoLuMWmHiiID1Own4xeCv
 TTEFoxCLO0ynfKfwXsKjsen+Q6U5ExT5FZj3v02meT9wHVyfNOIz7Q5wFMv/c9/i8H5OaNDmvh
 nlai6MElcKtJaJBzKeVUrv4MtVGjtptShv3QnmR/wz4kQ7WeRURg83hdt8nY+TiAp6YU0W8zjv
 GaNx5omxl14S8EncuOU9JVydX0d78Q3ZKy+JOzG90YjDhFWXZurtNmqEGkNbT7kfgdQmV7EuBz
 H1o=
Subject: Re: [PATCH v2 4/4] xen/netback: fix grant copy across page boundary
To:     Paul Durrant <pdurrant@gmail.com>
CC:     <xen-devel@lists.xen.org>, <kasan-dev@googlegroups.com>,
        <linux-mm@kvack.org>, <linux-kernel@vger.kernel.org>,
        Andrey Ryabinin <aryabinin@virtuozzo.com>,
        Alexander Potapenko <glider@google.com>,
        "Dmitry Vyukov" <dvyukov@google.com>,
        Boris Ostrovsky <boris.ostrovsky@oracle.com>,
        Juergen Gross <jgross@suse.com>,
        Stefano Stabellini <sstabellini@kernel.org>,
        George Dunlap <george.dunlap@citrix.com>,
        Ross Lagerwall <ross.lagerwall@citrix.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        "Wei Liu" <wei.liu@kernel.org>,
        "sergey.dyasli@citrix.com >> Sergey Dyasli" 
        <sergey.dyasli@citrix.com>
References: <20200117125834.14552-1-sergey.dyasli@citrix.com>
 <20200117125834.14552-5-sergey.dyasli@citrix.com>
 <CACCGGhApXXnQwfBN_LioAh+8bk-cAAQ2ciua-MnnQoMBUfap6g@mail.gmail.com>
From:   Sergey Dyasli <sergey.dyasli@citrix.com>
Autocrypt: addr=sergey.dyasli@citrix.com; keydata=
 xsFNBFtMVHEBEADc/hZcLexrB6vGTdGqEUsYZkFGQh6Z1OO7bCtM1go1RugSMeq9tkFHQSOc
 9c7W9NVQqLgn8eefikIHxgic6tGgKoIQKcPuSsnqGao2YabsTSSoeatvmO5HkR0xGaUd+M6j
 iqv3cD7/WL602NhphT4ucKXCz93w0TeoJ3gleLuILxmzg1gDhKtMdkZv6TngWpKgIMRfoyHQ
 jsVzPbTTjJl/a9Cw99vuhFuEJfzbLA80hCwhoPM+ZQGFDcG4c25GQGQFFatpbQUhNirWW5b1
 r2yVOziSJsvfTLnyzEizCvU+r/Ek2Kh0eAsRFr35m2X+X3CfxKrZcePxzAf273p4nc3YIK9h
 cwa4ZpDksun0E2l0pIxg/pPBXTNbH+OX1I+BfWDZWlPiPxgkiKdgYPS2qv53dJ+k9x6HkuCy
 i61IcjXRtVgL5nPGakyOFQ+07S4HIJlw98a6NrptWOFkxDt38x87mSM7aSWp1kjyGqQTGoKB
 VEx5BdRS5gFdYGCQFc8KVGEWPPGdeYx9Pj2wTaweKV0qZT69lmf/P5149Pc81SRhuc0hUX9K
 DnYBa1iSHaDjifMsNXKzj8Y8zVm+J6DZo/D10IUxMuExvbPa/8nsertWxoDSbWcF1cyvZp9X
 tUEukuPoTKO4Vzg7xVNj9pbK9GPxSYcafJUgDeKEIlkn3iVIPwARAQABzShTZXJnZXkgRHlh
 c2xpIDxzZXJnZXkuZHlhc2xpQGNpdHJpeC5jb20+wsGlBBMBCgA4FiEEkI7HMI5EbM2FLA1L
 Aa+w5JvbyusFAltMVHECGwMFCwkIBwIGFQoJCAsCBBYCAwECHgECF4AAIQkQAa+w5JvbyusW
 IQSQjscwjkRszYUsDUsBr7Dkm9vK65AkEACvL+hErqbQj5yTVNqvP1rVGsXvevViglSTkHD4
 9LGwEk4+ne8N4DPcqrDnyqYFd42UxTjVyoDEXEIIoy0RHWCmaspYEDX8fVmgFG3OFoeA9NAv
 JHssHU6B2mDAQ6M3VDmAwTw+TbXL/c1wblgGAP9kdurydZL8bevTTUh7edfnm5pwaT9HLXvl
 xLjz5qyt6tKEowM0xPVzCKaj3Mf/cuZFOlaWiHZ0biOPC0JeoHuz4UQTnBBUKk+n2nnn72k9
 37cNeaxARwn/bxcej9QlbrrdaNGVFzjCA/CIL0KjUepowpLN0+lmYjkPgeLNYfyMXumlSNag
 9qnCTh0QDsCXS/HUHPeBskAvwNpGBCkfiP/XqJ+V618ZQ1sclHa9aWNnlIR/a8xVx25t/14V
 R8EX/045HUpyPU8hI/yw+Fw/ugJ8W0dFzFeHU5K2tEW2W0m3ZWWWgpcBSCB17DDLIPjGX1Qc
 J8jiVJ7E4rfvA1JBg9BxVw5LVuXg2FB6bqnDYALfY2ydATk+ZzMUAMMilaE7/5a2RMV4TYcd
 8Cf77LdgO0pB3vF6z1QmNA2IbOICtJOXpmvHj+dKFUt5hFVbvqXbuAjlrwFktbAFVGxaeIYz
 nQ44lQu9JqDuSH5yOytdek24Dit8SgEHGvumyj17liCG6kNzxd+2xh3uaUCA5MIALy5mZ87B
 TQRbTFRxARAAwqL3u/cPDA+BhU9ghtAkC+gyC5smWUL1FwTQ9CwTqcQpKt85PoaHn8sc5ctt
 Aj2fNT/F2vqQx/BthVOdkhj9LCwuslqBIqbri3XUyMLVV/Tf+ydzHW2AjufCowwgBguxedD1
 f9Snkv+As7ZgMg/GtDqDiCWBFg9PneKvr+FPPd2WmrI8Kium4X5Zjs/a6OGUWVcIBoPpu088
 z/0tlKYjTFLhoIEsf6ll4KvRQZIyGxclg3RBEuN+wgMbKppdUf2DBXYeCyrrPx809CUFzcik
 O99drWti2CV1gF8bnbUvfCewxwqgVKtHl2kfsm2+/lgG4CTyvnvWqUyHICZUqISdz5GidaXn
 TcPlsAeo2YU2NXbjwnmxzJEP/4FxgsjYIUbbxdmsK+PGre7HmGmaDZ8K77L3yHr/K7AH8mFs
 WUM5KiW4SnKyIQvdHkZMpvE4XrrirlZ+JI5vE043GzzpS2CGo0NFQmDJLRbpN/KQY6dkNVgA
 L0aDxJtAO1rXKYDSrvpL80bYyskQ4ivUa06v9SM2/bHi9bnp3Nf/fK6ErWKWmDOHWrnTgRML
 oQpcxoVPxw2CwyWT1069Y/CWwgnbj34+LMwMUYhPEZMitABpQE74dEtIFh0c2scm3K2QGhOP
 KQK3szqmXuX6MViMZLDh/B7FXLQyqwMBnZygfzZFM9vpDskAEQEAAcLBjQQYAQoAIBYhBJCO
 xzCORGzNhSwNSwGvsOSb28rrBQJbTFRxAhsMACEJEAGvsOSb28rrFiEEkI7HMI5EbM2FLA1L
 Aa+w5Jvbyuvvbg//S3d1+XL568K5BTHXaYxSqCeMqYbV9rPhEHyk+rzKtwNXSbSO8x0xZutL
 gYV+nkW0KMPH5Bz3I1xiRKAkiX/JLcMfx2HAXJ1Cv2rpR6bxyCGBJmuwR68uMS/gKe6AWwTY
 q2kt1rtZPjGl9OwVoWGJKbu2pFBLWmLAnHlXOL6WDSE1Mz2Ah3jMHOaSyAgPu1XSNa600gMJ
 QrSxgbe7bW72gCjeHcrIjfv+uh5cZ5/J/edpWXRuE4Tz82nxudBIHE2vnQEoJrXOh2kAJiYs
 G+IllDqFKDPrnS0R3DenBNG0Ir8h9W6heETnhQUc9NDFCSr81Mp0fROdBfYZnQzgSZMjN2eY
 pkNEWshJER4ZYY+7hAmqI51HnsKuM46QINh00jJHRMykW3TBMlwnUFxZ0gplAecjCFC7g2zj
 g1qNxLnxMS4wCsyEVhCkPyYnS8zuoa4ZUH37CezD01Ph4O1saln5+M4blHCEAUpZIkTGpUoi
 SEwtoxu6EEUYfbcjWgzJCs023hbRykZlFALoRNCwVz/FnPuVu291jn9kjvCTEeE6g2dCtOrO
 ukuXzk1tIeeoggsU7AJ0bzP7QOEhEckaBbP4k6ic26LJGWNMinllePyEMXzsgmMHVN//8wDT
 NWaanhP/JZ1v5Mfn8s1chIqC0sJIw73RvvuBkOa+jx0OwW3RFoQ=
Message-ID: <85b36733-7f54-fdfd-045d-b8e8a92d84c5@citrix.com>
Date:   Wed, 22 Jan 2020 10:07:35 +0000
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
 Thunderbird/68.2.2
MIME-Version: 1.0
In-Reply-To: <CACCGGhApXXnQwfBN_LioAh+8bk-cAAQ2ciua-MnnQoMBUfap6g@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On 20/01/2020 08:58, Paul Durrant wrote:
> On Fri, 17 Jan 2020 at 12:59, Sergey Dyasli <sergey.dyasli@citrix.com> wrote:
>>
>> From: Ross Lagerwall <ross.lagerwall@citrix.com>
>>
>> When KASAN (or SLUB_DEBUG) is turned on, there is a higher chance that
>> non-power-of-two allocations are not aligned to the next power of 2 of
>> the size. Therefore, handle grant copies that cross page boundaries.
>>
>> Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
>> Signed-off-by: Sergey Dyasli <sergey.dyasli@citrix.com>
>> ---
>> v1 --> v2:
>> - Use sizeof_field(struct sk_buff, cb)) instead of magic number 48
>> - Slightly update commit message
>>
>> RFC --> v1:
>> - Added BUILD_BUG_ON to the netback patch
>> - xenvif_idx_release() now located outside the loop
>>
>> CC: Wei Liu <wei.liu@kernel.org>
>> CC: Paul Durrant <paul@xen.org>
>
> Acked-by: Paul Durrant <paul@xen.org>

Thanks! I believe this patch can go in independently from the other
patches in the series. What else is required for this?

--
Sergey