Re: [Gems-users] Question about how OPAL handles DTLB miss

[Dan Gibson <degibson@xxxxxxxx>]

In these cases, Opal will notice at commit-time that Simics did not commit the load -- instead, Simics begins running the DTLB miss handler. Ergo, Opal flushes its pipe and runs the handler instead.

Regards,
Dan

On Mon, Apr 19, 2010 at 8:34 AM, shanshuchang <shanshuchang@xxxxxxxxx> wrote:

Hi all,

I am studying the OPAL codes and I am puzzled how the OPAL handles a Data TLB miss.

For example, when a LD inst is scheduled to be executed, it need to do address generation with the help of function mmuAccess (in memop.C file).
In such a situation, when a exception occurs, the Execute() function just return.
So I wonder, how does the OPAL module handle the DTLB miss exception?

 

Thanks in advance!

 

Regards,

shuchang

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