Lines Matching refs:UC
20 UC Uncacheable
24 System memory typically uses the WB attribute. The UC attribute is
26 like UC is, but writes may be delayed and combined to increase
34 support either WB or UC access to main memory, while others support
79 generate UC accesses only to locations explicitly referenced by
80 software. This allows UC identity mappings to cover granules that
81 are only partially populated, or populated with a combination of UC
100 mappings may be either WB or UC. If the region being mapped
133 or UC, and the EFI memory map designates the region as WC, then
148 space are not in kern_memmap, but could be accessed with a UC
170 Failing all of the above, we have to fall back to a UC mapping.
182 succeed. It may create either WB or UC user mappings, depending
192 0xA0000-0xBFFFF UC only (VGA frame buffer)
200 which uses a granule-sized UC mapping. This granule will cover some
201 WB-only memory, but since UC is non-speculative, the processor will
213 If EFI reports the range as partly WB and partly UC (as on sx[12]000
235 used to be done with a UC mapping, because the VGA frame buffer
236 at 0xA0000 prevents use of a WB granule. The UC mapping causes