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[SPARC64]: Make use of Niagara 256MB PTEs for kernel mappings.
authorDavid S. Miller <davem@davemloft.net>
Wed, 22 Feb 2006 04:51:13 +0000 (20:51 -0800)
committerDavid S. Miller <davem@sunset.davemloft.net>
Mon, 20 Mar 2006 09:13:55 +0000 (01:13 -0800)
We use a bitmap, one bit for every 256MB of memory.  If the
bit is set we can use a 256MB PTE for linear mappings, else
we have to use a 4MB PTE.

SUN4V support is there, and we can very easily add support
for Panther cpu 256MB PTEs in the future.

Signed-off-by: David S. Miller <davem@davemloft.net>

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