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Subject: Re: svn commit: r280133 - head/usr.sbin/bhyve
From: "Justin T. Gibbs" <gibbs@scsiguy.com>
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Date: Mon, 16 Mar 2015 18:38:29 -0600
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To: Alexander Motin <mav@FreeBSD.org>
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On Mar 16, 2015, at 3:16 AM, Alexander Motin <mav@FreeBSD.org> wrote:
>=20
> Author: mav
> Date: Mon Mar 16 09:15:59 2015
> New Revision: 280133
> URL: https://svnweb.freebsd.org/changeset/base/280133
>=20
> Log:
>  Increase S/G list size of 32 to 33 entries.
>=20
>  32 entries are not enough for the worst case of misaligned 128KB =
request,
>  that made FreeBSD to chunk large quests in odd pieces.
>=20
>  MFC after:	2 weeks
>=20
> Modified:
>  head/usr.sbin/bhyve/block_if.h
>  head/usr.sbin/bhyve/pci_virtio_block.c
>=20
> Modified: head/usr.sbin/bhyve/block_if.h
> =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
> --- head/usr.sbin/bhyve/block_if.h	Mon Mar 16 01:15:08 2015	=
(r280132)
> +++ head/usr.sbin/bhyve/block_if.h	Mon Mar 16 09:15:59 2015	=
(r280133)
> @@ -39,7 +39,7 @@
> #include <sys/uio.h>
> #include <sys/unistd.h>
>=20
> -#define BLOCKIF_IOV_MAX		32	/* not practical to be =
IOV_MAX */
> +#define BLOCKIF_IOV_MAX		33	/* not practical to be =
IOV_MAX */

Shouldn=E2=80=99t these be derived from MAXPHYS?

=E2=80=94
Justin=