From: Robert Reif <reif@earthlink.net>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [5849] Change MMIO callbacks to use offsets, not absolute addresses.
Date: Mon, 23 Feb 2009 11:43:43 -0500 [thread overview]
Message-ID: <49A2D23F.4020007@earthlink.net> (raw)
In-Reply-To: <200902231316.15214.paul@nowt.org>
Paul Brook wrote:
> Should be fixed now.
>
>
Not really. This fixes that specific case but it doesn't fix the
general case where a hardware device needs to call do_unassigned_access
because the hardware device still only has the offset.
You could store the physical base in each hardware device and recreate
the physical address but that requires changing all hardware devices
that need to do that. Why should the hardware drivers go through the
trouble to recreate a physical address when just a few instructions
before then the physical address was known but irreversibly destroyed
when it was converted to an offset.
next prev parent reply other threads:[~2009-02-23 16:43 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-01 18:59 [Qemu-devel] [5849] Change MMIO callbacks to use offsets, not absolute addresses Paul Brook
2009-02-23 12:18 ` Robert Reif
2009-02-23 12:36 ` Paul Brook
2009-02-23 12:42 ` Robert Reif
2009-02-23 13:16 ` Paul Brook
2009-02-23 16:43 ` Robert Reif [this message]
2009-02-23 17:04 ` Paul Brook
2009-02-24 0:08 ` Robert Reif
2009-02-24 0:30 ` Paul Brook
2009-02-24 1:05 ` Robert Reif
2009-02-24 1:12 ` Paul Brook
2009-02-24 1:27 ` Robert Reif
2009-02-24 1:50 ` Paul Brook
2009-02-24 21:04 ` Blue Swirl
2009-02-24 22:28 ` Paul Brook
2009-02-25 19:54 ` Blue Swirl
2009-02-26 15:19 ` Paul Brook
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