X86: Use regular read requests in the walker instead of read exclusive.

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Submitter:	Gabe Black
Repository:	gem5
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Groups:	Default
People:	ali, gblack, nate, stever

Description

X86: Use regular read requests in the walker instead of read exclusive.

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I won't vouch for the surrounding code (I don't get the difference between the oldRead, read, and write packets, for starters), but this one specific line that's changed looks good to me :-)

Gabe Black Feb. 26, 2011, 8:23 a.m. (Feb. 26, 2011, 8:23 a.m.)

oldRead is the read that just returned data, read and write are the packets that should go out to continue with the walk. The writes are to update accessed and dirty bits, and the new read is to access the next entry. I also missed an instance of ReadExReq which I just added to the patch.

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Revision 2 (+2 -2)

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src/arch/x86/pagetable_walker.cc

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