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Tue, 13 Aug 2019 14:31:12 +0000 (UTC) To: Kevin Wolf , Vladimir Sementsov-Ogievskiy References: <20190812181146.26121-1-vsementsov@virtuozzo.com> <35b23140-25d5-627e-7a86-4b50fbc5be52@redhat.com> <3d5fcc5b-cdb0-f028-1ea2-af85850db20e@virtuozzo.com> <15cf7372-826a-0684-d6ad-90deea36959e@virtuozzo.com> <43fb7754-6f94-00f6-6172-70cbb53e787c@virtuozzo.com> <94ccf129-cc7e-2778-7688-fd718f8df249@virtuozzo.com> <20190813115115.GG4663@localhost.localdomain> From: Max Reitz Openpgp: preference=signencrypt Autocrypt: addr=mreitz@redhat.com; prefer-encrypt=mutual; keydata= mQENBFXOJlcBCADEyyhOTsoa/2ujoTRAJj4MKA21dkxxELVj3cuILpLTmtachWj7QW+TVG8U /PsMCFbpwsQR7oEy8eHHZwuGQsNpEtNC2G/L8Yka0BIBzv7dEgrPzIu+W3anZXQW4702+uES U29G8TP/NGfXRRHGlbBIH9KNUnOSUD2vRtpOLXkWsV5CN6vQFYgQfFvmp5ZpPeUe6xNplu8V mcTw8OSEDW/ZnxJc8TekCKZSpdzYoxfzjm7xGmZqB18VFwgJZlIibt1HE0EB4w5GsD7x5ekh awIe3RwoZgZDLQMdOitJ1tUc8aqaxvgA4tz6J6st8D8pS//m1gAoYJWGwwIVj1DjTYLtABEB AAG0HU1heCBSZWl0eiA8bXJlaXR6QHJlZGhhdC5jb20+iQFTBBMBCAA9AhsDBQkSzAMABQsJ CAcCBhUICQoLAgQWAgMBAh4BAheABQJVzie5FRhoa3A6Ly9rZXlzLmdudXBnLm5ldAAKCRD0 B9sAYdXPQDcIB/9uNkbYEex1rHKz3mr12uxYMwLOOFY9fstP5aoVJQ1nWQVB6m2cfKGdcRe1 2/nFaHSNAzT0NnKz2MjhZVmcrpyd2Gp2QyISCfb1FbT82GMtXFj1wiHmPb3CixYmWGQUUh+I AvUqsevLA+WihgBUyaJq/vuDVM1/K9Un+w+Tz5vpeMidlIsTYhcsMhn0L9wlCjoucljvbDy/ 8C9L2DUdgi3XTa0ORKeflUhdL4gucWoAMrKX2nmPjBMKLgU7WLBc8AtV+84b9OWFML6NEyo4 4cP7cM/07VlJK53pqNg5cHtnWwjHcbpGkQvx6RUx6F1My3y52vM24rNUA3+ligVEgPYBuQEN BFXOJlcBCADAmcVUNTWT6yLWQHvxZ0o47KCP8OcLqD+67T0RCe6d0LP8GsWtrJdeDIQk+T+F xO7DolQPS6iQ6Ak2/lJaPX8L0BkEAiMuLCKFU6Bn3lFOkrQeKp3u05wCSV1iKnhg0UPji9V2 W5eNfy8F4ZQHpeGUGy+liGXlxqkeRVhLyevUqfU0WgNqAJpfhHSGpBgihUupmyUg7lfUPeRM DzAN1pIqoFuxnN+BRHdAecpsLcbR8sQddXmDg9BpSKozO/JyBmaS1RlquI8HERQoe6EynJhd 64aICHDfj61rp+/0jTIcevxIIAzW70IadoS/y3DVIkuhncgDBvGbF3aBtjrJVP+5ABEBAAGJ ASUEGAEIAA8FAlXOJlcCGwwFCRLMAwAACgkQ9AfbAGHVz0CbFwf9F/PXxQR9i4N0iipISYjU sxVdjJOM2TMut+ZZcQ6NSMvhZ0ogQxJ+iEQ5OjnIputKvPVd5U7WRh+4lF1lB/NQGrGZQ1ic alkj6ocscQyFwfib+xIe9w8TG1CVGkII7+TbS5pXHRxZH1niaRpoi/hYtgzkuOPp35jJyqT/ /ELbqQTDAWcqtJhzxKLE/ugcOMK520dJDeb6x2xVES+S5LXby0D4juZlvUj+1fwZu+7Io5+B bkhSVPb/QdOVTpnz7zWNyNw+OONo1aBUKkhq2UIByYXgORPFnbfMY7QWHcjpBVw9MgC4tGeF R4bv+1nAMMxKmb5VvQCExr0eFhJUAHAhVg== Message-ID: Date: Tue, 13 Aug 2019 16:31:11 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190813115115.GG4663@localhost.localdomain> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="59MYGqe371G3TSJJPnkxG1bey80227Mge" X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Tue, 13 Aug 2019 14:31:14 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: Re: [Qemu-devel] [PATCH 0/2] deal with BDRV_BLOCK_RAW X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "qemu-devel@nongnu.org" , "qemu-block@nongnu.org" , Denis Lunev Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --59MYGqe371G3TSJJPnkxG1bey80227Mge Content-Type: multipart/mixed; boundary="voaY1YrroeKeeDsbt9sa6nletBmRvIox1"; protected-headers="v1" From: Max Reitz To: Kevin Wolf , Vladimir Sementsov-Ogievskiy Cc: "qemu-block@nongnu.org" , "qemu-devel@nongnu.org" , Denis Lunev Message-ID: Subject: Re: [PATCH 0/2] deal with BDRV_BLOCK_RAW References: <20190812181146.26121-1-vsementsov@virtuozzo.com> <35b23140-25d5-627e-7a86-4b50fbc5be52@redhat.com> <3d5fcc5b-cdb0-f028-1ea2-af85850db20e@virtuozzo.com> <15cf7372-826a-0684-d6ad-90deea36959e@virtuozzo.com> <43fb7754-6f94-00f6-6172-70cbb53e787c@virtuozzo.com> <94ccf129-cc7e-2778-7688-fd718f8df249@virtuozzo.com> <20190813115115.GG4663@localhost.localdomain> In-Reply-To: <20190813115115.GG4663@localhost.localdomain> --voaY1YrroeKeeDsbt9sa6nletBmRvIox1 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 13.08.19 13:51, Kevin Wolf wrote: [...] > Hm... This is a mess. :-) Just out of curiosity: Why? Aren=E2=80=99t there only two things we really need from the block_status= infrastructure? (1) Whether something is allocated in the given layer of the backing chai= n, (2) Whether we know that a given range reads as zeroes. Do we really need anything else? Max --voaY1YrroeKeeDsbt9sa6nletBmRvIox1-- --59MYGqe371G3TSJJPnkxG1bey80227Mge Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEkb62CjDbPohX0Rgp9AfbAGHVz0AFAl1Sya8ACgkQ9AfbAGHV z0AZggf8DL6J08dHzHfyO99DvkRcuye54IBzzoNwGwwtJNfpriMCYb5HUJRyIjp0 rUDiT4Nj94xF4tfNzTQiRB9PfTFDibsh3DlogN8nRAAbn6BbQyAbpKzjoCgZQ6Pp XJd/lCT5NSZASp15ZWArox/OIIbxUBkM+VfytL8F2UhJSVDI394nzK4ftL00sEr6 IkaKhMrNc7HvoGoYaxxh9XDjLBQTlUCM7prjer7OoAOxcaMoDldRfmerYnErmp4G yKFnoaHOegNr1aPHyie5jy+yBXIO/1mhP8ssC/G2F4aZrAcxUUKpyIc7w/9C9Jdr NpeXIlNdEfVQnpG9S6056vWk79rBeQ== =qBO+ -----END PGP SIGNATURE----- --59MYGqe371G3TSJJPnkxG1bey80227Mge--