3 Commits

Author	SHA1	Message	Date
Marcel Moolenaar	0eb8c1410a	Implement basic support for memory attributes. At this time we only ... distinguish between UC and WB memory so that we can map the page to either a region 6 address (for UC) or a region 7 address (for WB). This change is only now possible, because previously we would map regions 6 and 7 with 256MB translations and on top of that had the kernel mapped in region 7 using a wired translation. The introduction of the PBVM moved the kernel into its own region and freed up region 7 and allowed us to revert to standard page-sized translations. This commit inroduces pmap_page_to_va() that respects the attribute.	2011-07-08 16:30:54 +00:00
Alan Cox	3edd4a4094	MFamd64 ... Simplify the sf_buf implementation. In short, make it a veneer over the direct virtual-to-physical mapping.	2004-04-18 07:11:12 +00:00
Alan Cox	e45db9b837	- Modify alpha's sf_buf implementation to use the direct virtual-to- ... physical mapping. - Move the sf_buf API to its own header file; make struct sf_buf's definition machine dependent. In this commit, we remove an unnecessary field from struct sf_buf on the alpha, amd64, and ia64. Ultimately, we may eliminate struct sf_buf on those architecures except as an opaque pointer that references a vm page.	2003-11-16 06:11:26 +00:00