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yaml
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r: 21358
b: refs/heads/master
c: b0fd4e4
h: refs/heads/master
v: v3
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David S. Miller committed Mar 20, 2006
1 parent 4028773 commit 314ec2f
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2 changes: 1 addition & 1 deletion [refs]
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refs/heads/master: 30a6ecad9670d97c9d0fbfa7d80970aeb339bdec
refs/heads/master: b0fd4e49aea8a460afab7bc67cd618e2d19291d4
8 changes: 0 additions & 8 deletions trunk/include/asm-sparc64/tsb.h
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* 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
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