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https://bugs.freedesktop.org/show_bug.cgi?id=4150
------- Additional Comments From [EMAIL PROTECTED] 2005-08-23 12:49 -------
(In reply to comment #12)
> (In reply to comment #11)
> > (In reply to comment #9)
> > > (In reply to comment #4)
> > > >
> > > > Is bitblt secure?
> > >
> > > I don't think so - it could be used to view system memory,
> > > so a check is needed.
> >
> > See comment #6.
>
> Thing is the patch switches BITBLT to use a r300 raw packet, so this would
> bypass usual radeon checks.
Usual readeon checks arent used for r300 as far as I can see.
Looking at radeon_check_and_fixup_packet3, it seems to me like LOAD_VBPNTR would
go trough it without any checks.
>
> I am not certain why this patch affects things at all, as I would have
> expected
> packets inherited from radeon driver to work fine - certainly Xserver should
> use BITBLT quite often. Perhaps, there is some subtle issue that I am missing
> ?
Remember that xorg uses indirect buffers.
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