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authorDavid S. Miller <davem@sunset.davemloft.net>2006-02-01 15:55:21 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-03-20 01:11:32 -0800
commit517af33237ecfc3c8a93b335365fa61e741ceca4 (patch)
tree58eff40eb4c517c4fd49fd347d38273ee1e1ee4b /arch/sparc64/kernel/ttable.S
parentb0fd4e49aea8a460afab7bc67cd618e2d19291d4 (diff)
[SPARC64]: Access TSB with physical addresses when possible.
This way we don't need to lock the TSB into the TLB. The trick is that every TSB load/store is registered into a special instruction patch section. The default uses virtual addresses, and the patch instructions use physical address load/stores. We can't do this on all chips because only cheetah+ and later have the physical variant of the atomic quad load. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/ttable.S')
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