From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41793) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bcdhR-00018h-9W for qemu-devel@nongnu.org; Wed, 24 Aug 2016 15:18:58 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bcdhO-0006YI-2K for qemu-devel@nongnu.org; Wed, 24 Aug 2016 15:18:57 -0400 Received: from mx1.redhat.com ([209.132.183.28]:42312) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bcdhN-0006Y7-Sd for qemu-devel@nongnu.org; Wed, 24 Aug 2016 15:18:53 -0400 References: <1472060915-6011-1-git-send-email-rth@twiddle.net> From: Eric Blake Message-ID: <57BDF31B.3000200@redhat.com> Date: Wed, 24 Aug 2016 14:18:51 -0500 MIME-Version: 1.0 In-Reply-To: <1472060915-6011-1-git-send-email-rth@twiddle.net> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="P0B0pf2EoEMTx34tNJeUuNKl75IjHwqQa" Subject: Re: [Qemu-devel] [PATCH v2 0/8] Improve buffer_is_zero List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Richard Henderson , qemu-devel@nongnu.org Cc: pbonzini@redhat.com, peter.maydell@linaro.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --P0B0pf2EoEMTx34tNJeUuNKl75IjHwqQa Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 08/24/2016 12:48 PM, Richard Henderson wrote: > Patches 1-4 remove the use of ifunc from the implementation. >=20 > Patch 6 adjusts the x86 implementation a bit more to take > advantage of ptest (in sse4.1) and unaligned accesses (in avx1). Do we really care about unaligned access? Or can we guarantee that all our calls to buffer_is_zero are already aligned, and make optimizations along those lines? --=20 Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org --P0B0pf2EoEMTx34tNJeUuNKl75IjHwqQa Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 Comment: Public key at http://people.redhat.com/eblake/eblake.gpg Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBCAAGBQJXvfMcAAoJEKeha0olJ0Nq+/AH/07Nl6dhzGY91r991JOmmwTX Ydvpqi4pN6IoUIufm0gKjTt3AEBETYrAep0WgYuKxmtEb/YgRTDdSTd/IWJ8GQ45 UBV5US+r4kwefTEPyI/3SzIVnVSxZOON8z5iIYB7CiCEPF82Fh/68f+NXBEONWK6 wzCWB9BCYTJaHk8iOqqxdDYaZASQF1f4ZRS37ADwdl60KNBrFaFFWUMDTGqFykrK OwZ8EjI8cD+bW32bSjFsf9sJ7mrqwXhfbFCa8F1eB85xw/2kxc+6+fQaH5twxOLN 46v4hx0AbtLHTvqr+P3/N1AzLnqYunY4cqz6aCRIBB2sakWUMi0w4QwamiZvNGc= =hfmw -----END PGP SIGNATURE----- --P0B0pf2EoEMTx34tNJeUuNKl75IjHwqQa--