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authorDavid S. Miller <davem@davemloft.net>2005-05-23 18:52:08 -0400
committerDavid S. Miller <davem@davemloft.net>2005-05-23 18:52:08 -0400
commit816242da3735957bee99aeba40aa60c4f120a101 (patch)
treec5a1092a52911143b0c4f9bc4257c1dbafbb8bdd /include/asm-ia64/cputime.h
parentab3fc403633c38aef5ef48844f8e5dbfee7c34f8 (diff)
[SPARC64]: Add boot option to force UltraSPARC-III P-Cache on.
Older UltraSPARC-III chips have a P-Cache bug that makes us disable it by default at boot time. However, this does hurt performance substantially, particularly with memcpy(), and the bug is _incredibly_ obscure. I have never seen it triggered in practice, ever. So provide a "-P" boot option that forces the P-Cache on. It taints the kernel, so if it does trigger and cause some data corruption or OOPS, we will find out in the logs that this option was on when it happened. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/asm-ia64/cputime.h')
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