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[SPARC64]: Kill out-of-date commentary in asm-sparc64/tsb.h 

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2006-01-31 23:13:29 -08:00
parent 30a6ecad96
commit b0fd4e49ae
1 changed files with 0 additions and 8 deletions
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include/asm-sparc64/tsb.h
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@ -37,14 +37,6 @@
* choose to use bit 47 in the tag. Also, since we never map anything
* at page zero in context zero, we use zero as an invalid tag entry.
* When the lock bit is set, this forces a tag comparison failure.
*
* Currently, we allocate an 8K TSB per-process and we use it for both
* I-TLB and D-TLB misses. Perhaps at some point we'll add code that
* monitors the number of active pages in the process as we get
* major/minor faults, and grow the TSB in response. The only trick
* in implementing that is synchronizing the freeing of the old TSB
* wrt. parallel TSB updates occuring on other processors. On
* possible solution is to use RCU for the freeing of the TSB.
*/
#define TSB_TAG_LOCK_BIT 47