Hello Thomas:
> If I understand the code correctly, the user-space application prepares
> command buffers directly in AGP, and asks the
> drm module to submit them. We can't allow this for security reasons. The
> user-space application could for example fill the buffer with
> commands to texture from arbitrary system memory, getting hold of other
> user's private data.
> The whole ring-buffer stuff and the command verifier was once
> implemented to fix that security problem.
Thank you very much for your comment. What if we do a security check in
these buffer before submit? Let me check if there is any way to work around for
this security issue.
Thanks and Best Regards
=================================================
Bruce C. Chang(張祖明)
VIA Technologies, Inc.
Address: 1F, 531, Chung-Cheng Road, Hsin-Tien, 231 Taipei
Tel: +886-2-22185452 Ext 7323
Mobile: +886-968343824
Fax: +886-2-22186282
Skype: Bruce.C.Chang
Email: brucech...@via.com.tw
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