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公开(公告)号：US20130174144A1
公开(公告)日：2013-07-04
申请号：US13338915
申请日：2011-12-28
申请人： Gongxian J. Cheng , Anthony Asaro
发明人： Gongxian J. Cheng , Anthony Asaro
IPC分类号： G06F9/455
CPC分类号： G06F9/45558 , G06F2009/45575 , G06T1/20
摘要： A method for changing between virtual machines on a graphics processing unit (GPU) includes requesting to switch from a first virtual machine (VM) with a first global context to a second VM with a second global context; stopping taking of new commands in the first VM; saving the first global context; and switching out of the first VM.
摘要翻译： 用于在图形处理单元（GPU）上的虚拟机之间进行变换的方法包括请求从具有第一全局上下文的第一虚拟机（VM）切换到具有第二全局上下文的第二虚拟机; 停止在第一个虚拟机中接收新的命令; 保存第一个全球语境; 并切换出第一个VM。
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公开(公告)号：US20130166922A1
公开(公告)日：2013-06-27
申请号：US13599609
申请日：2012-08-30
IPC分类号： G06F12/14
CPC分类号： G06F21/10 , G06F12/1416 , G06F21/84
摘要： When content, such as premium video or audio, is decoded, the content is stored in protected memory segments. Read access to the protected memory segments from a component not in a frame buffer protected (FBP) mode is blocked by a memory controller. The memory controller also blocks components in the FBP mode from writing to unprotected memory segments. The content may be processed by a processing engine operating in the FBP mode and may only be written back to protected memory segments. The memory segment may later be marked as unprotected if the memory segment is no longer needed. If the content is encrypted in protected memory, the encrypting key associated with the memory segment may be removed. If the content is stored in the clear, the protected memory segments are scrubbed before releasing the segments for use as unprotected memory segments.
摘要翻译： 当诸如高级视频或音频的内容被解码时，内容被存储在受保护的存储器段中。 从不在帧缓冲区保护（FBP）模式的组件读取受保护的存储器段的访问被存储器控制器阻止。 存储器控制器还阻止FBP模式中的组件写入不受保护的存储器段。 内容可以由在FBP模式下操作的处理引擎来处理，并且可以仅被写回到受保护的存储器段。 如果不再需要存储器段，则存储器段可以稍后被标记为不受保护。 如果内容在受保护的存储器中被加密，则可以去除与存储器段相关联的加密密钥。 如果内容以清晰的方式存储，则在释放用作无保护内存段的段之前，将对受保护的内存段进行擦除。
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