From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34621) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XPAyK-0000Bj-1E for qemu-devel@nongnu.org; Wed, 03 Sep 2014 09:51:48 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XPAyD-0006jh-JJ for qemu-devel@nongnu.org; Wed, 03 Sep 2014 09:51:39 -0400 Received: from mx1.redhat.com ([209.132.183.28]:56607) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XPAyD-0006jM-5N for qemu-devel@nongnu.org; Wed, 03 Sep 2014 09:51:33 -0400 Date: Wed, 3 Sep 2014 14:51:28 +0100 From: Stefan Hajnoczi Message-ID: <20140903135128.GP28095@stefanha-thinkpad.redhat.com> References: <1409696709-27623-1-git-send-email-mreitz@redhat.com> <1409696709-27623-4-git-send-email-mreitz@redhat.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="IYV9cRr2u6rjcP4B" Content-Disposition: inline In-Reply-To: <1409696709-27623-4-git-send-email-mreitz@redhat.com> Subject: Re: [Qemu-devel] [PATCH v2 3/3] docs/qcow2: Limit refcount_order to [0, 6] List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Max Reitz Cc: Kevin Wolf , qemu-devel@nongnu.org, =?iso-8859-1?Q?Beno=EEt?= Canet --IYV9cRr2u6rjcP4B Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Sep 03, 2014 at 12:25:09AM +0200, Max Reitz wrote: > Specify the upper limit of refcount_order to be 6 (that is, > refcount_bits =3D 64). Any larger value does not make much sense when all > offsets, sizes, cluster counts etc. "only" have a width of 64 bit as > well, and very large values would be very difficult to support. > Therefore, just cap it at the largest reasonable value. >=20 > Suggested-by: Eric Blake > Signed-off-by: Max Reitz > --- > docs/specs/qcow2.txt | 1 + > 1 file changed, 1 insertion(+) Reviewed-by: Stefan Hajnoczi --IYV9cRr2u6rjcP4B Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAEBAgAGBQJUBxzgAAoJEJykq7OBq3PI/XEH/1nud7JpZpal1xwD8dmedXWF NBYU6aMjVT4sQFxBhZiEkagTJrb8lGcwqU5bh2P0L/2IBqOGkAv/0PxR6C2j44ut gM6M0Kvfk+++ZXSSjWLxudllQWBcKxiDKUSRkrbBNxWqEwFddrkhPXTHmEKdipRi +vJWqGkrKGlFqvHzw2xwk6Ap+RhdCp81SKtcGAOPe92JBsGko/Qi+WUS/KZEmRPE y2GIMdz/EjJdj9Cc8gYkRWhpA9yYOrf0zDaBlyGSym3ODOP4aaJr4onIVYeakLEN R+t9tbOYNWWJ7DKe/wdRmKPDbSHU2UZHu61AmZLNT/e0AukCaO+CRq8Abb5dMAw= =Ax1z -----END PGP SIGNATURE----- --IYV9cRr2u6rjcP4B--