Lines Matching refs:UC
16 UC Uncacheable
19 System memory typically uses the WB attribute. The UC attribute is
21 like UC is, but writes may be delayed and combined to increase
29 support either WB or UC access to main memory, while others support
72 generate UC accesses only to locations explicitly referenced by
73 software. This allows UC identity mappings to cover granules that
74 are only partially populated, or populated with a combination of UC
90 mappings may be either WB or UC. If the region being mapped
121 or UC, and the EFI memory map designates the region as WC, then
135 space are not in kern_memmap, but could be accessed with a UC
156 Failing all of the above, we have to fall back to a UC mapping.
166 succeed. It may create either WB or UC user mappings, depending
173 0xA0000-0xBFFFF UC only (VGA frame buffer)
180 which uses a granule-sized UC mapping. This granule will cover some
181 WB-only memory, but since UC is non-speculative, the processor will
192 If EFI reports the range as partly WB and partly UC (as on sx[12]000
211 used to be done with a UC mapping, because the VGA frame buffer
212 at 0xA0000 prevents use of a WB granule. The UC mapping causes