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From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Cc: jeremy@goop.org, xen-devel@lists.xensource.com, Ian.Campbell@citrix.com
Subject: Re: [PATCH v6] Userspace grant communication
Date: Mon, 14 Feb 2011 14:04:07 -0500	[thread overview]
Message-ID: <20110214190407.GC11121@dumpdata.com> (raw)
In-Reply-To: <4D596C98.4090401@tycho.nsa.gov>

> > And besides the two questions I posted today they look OK to me. However
> > I have on question that I think points to a bug.

.. snip ..

> I think this will come out with map.index=4, op.index=8192, since the only
> entry in priv->maps has map->index = 0 and map->count = 4.

Duh! Yes, and that changes how this all works out.
..
> much simpler method of an always-incrementing index for generating offsets;
> there's no reason that that can't be done here if it looks like there's a
> mistake. The code does look correct to me, and I have tested it with variable-size
> grants (although not in the 4/1/1 configuration you suggested).

That is OK. Thanks for working through this example.

      reply	other threads:[~2011-02-14 19:04 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-02-03 17:18 [PATCH v6] Userspace grant communication Daniel De Graaf
2011-02-03 17:18 ` [PATCH 1/6] xen-gntdev: Change page limit to be global instead of per-open Daniel De Graaf
2011-02-03 17:19 ` [PATCH 2/6] xen-gntdev: Use find_vma rather than iterating our vma list manually Daniel De Graaf
2011-02-03 17:19 ` [PATCH 3/6] xen-gntdev: Add reference counting to maps Daniel De Graaf
2011-02-03 17:19 ` [PATCH 4/6] xen-gntdev: Support mapping in HVM domains Daniel De Graaf
2011-02-14 15:51   ` Konrad Rzeszutek Wilk
2011-02-14 17:43     ` Daniel De Graaf
2011-02-14 18:52       ` Konrad Rzeszutek Wilk
2011-02-03 17:19 ` [PATCH 5/6] xen-gntalloc: Userspace grant allocation driver Daniel De Graaf
2011-02-08 22:48   ` Konrad Rzeszutek Wilk
2011-02-09 18:52     ` Daniel De Graaf
2011-02-03 17:19 ` [PATCH 6/6] xen/gntalloc, gntdev: Add unmap notify ioctl Daniel De Graaf
2011-02-14 15:37   ` Konrad Rzeszutek Wilk
2011-02-14 18:07     ` Daniel De Graaf
2011-02-03 19:16 ` [PATCH] xen-gntdev: Fix memory leak when mmap fails Daniel De Graaf
2011-02-07 23:14 ` [PATCH v6] Userspace grant communication Konrad Rzeszutek Wilk
2011-02-08 14:14   ` [PATCH] xen-gntdev: Fix unmap notify on PV domains Daniel De Graaf
2011-02-08 22:58     ` Konrad Rzeszutek Wilk
2011-02-09 20:33       ` [PATCH] xen-gntdev: prevent using UNMAP_NOTIFY_CLEAR_BYTE on read-only mappings Daniel De Graaf
2011-02-09 21:09         ` [PATCH v2] " Daniel De Graaf
2011-02-09 22:22         ` [PATCH] " Jeremy Fitzhardinge
2011-02-09 23:11           ` Daniel De Graaf
2011-02-09 23:15           ` [PATCH v3] " Daniel De Graaf
2011-02-08 21:49   ` [PATCH v6] Userspace grant communication Konrad Rzeszutek Wilk
2011-02-09 20:11     ` [PATCH] xen-gntdev: Use map->vma for checking map validity Daniel De Graaf
2011-02-09 20:12     ` [PATCH] xen-gntdev: Avoid unmapping ranges twice Daniel De Graaf
2011-02-09 21:11 ` [PATCH] xen-gntdev: Avoid double-mapping memory Daniel De Graaf
2011-02-14 16:14 ` [PATCH v6] Userspace grant communication Konrad Rzeszutek Wilk
2011-02-14 16:38   ` Konrad Rzeszutek Wilk
2011-02-14 17:56     ` Daniel De Graaf
2011-02-14 19:21       ` Konrad Rzeszutek Wilk
2011-02-14 20:55         ` Daniel De Graaf
2011-02-14 17:55   ` Daniel De Graaf
2011-02-14 19:04     ` Konrad Rzeszutek Wilk [this message]

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