RE: syscall exit path optimization

From: David Mosberger <davidm_at_napali.hpl.hp.com>
Date: 2005-01-28 10:50:42
>>>>> On Thu, 27 Jan 2005 15:44:42 -0800, "Chen, Kenneth W" <kenneth.w.chen@intel.com> said:

  Ken> David Mosberger wrote on Wednesday, January 26, 2005 1:31 PM
  >> Couldn't you restore r8/r10 after .work_pending is done in if
  >> pLvSys is TRUE?  That way, .work_processed would simply preserve
  >> (save _and_ restore) r8/r10.

  Ken> Thank you for reviewing and the suggestion.  Here is the
  Ken> updated patch, net saving for 6 cycles compares to 4 with
  Ken> earlier version.

Tidy _and_ faster---not bad at all for a net change of one extra line!

Good work.

	--david
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Received on Thu Jan 27 19:10:04 2005

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