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sparc64: Handle extremely large kernel TSB range flushes sanely.
authorDavid S. Miller <davem@davemloft.net>
Wed, 26 Oct 2016 02:43:17 +0000 (19:43 -0700)
committerDavid S. Miller <davem@davemloft.net>
Wed, 26 Oct 2016 02:43:17 +0000 (19:43 -0700)
commit849c498766060a16aad5b0e0d03206726e7d2fa4
tree0776b262ce8a602398dadd1dfefb27358d1da072tree | snapshot
parent9d9fa230206a3aea6ef451646c97122f04777983commit | diff
sparc64: Handle extremely large kernel TSB range flushes sanely.

If the number of pages we are flushing is more than twice the number
of entries in the TSB, just scan the TSB table for matches rather
than probing each and every page in the range.

Based upon a patch and report by James Clarke.

Signed-off-by: David S. Miller <davem@davemloft.net>
arch/sparc/mm/tsb.c diff | blob | history
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