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gru: update to rev 0.9 of gru spec

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Update GRU driver to the latest version of the GRU spec. This consists
of minor updates:
	- changes & additions to error status bits
	- new restriction on handling of TLB misses while in FMM mode
	- new field (not used by software) in TFH

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jack Steiner
2009-06-17 16:28:27 -07:00
committed by Linus Torvalds
parent eb5bd5e52a
commit 270952a907
6 changed files with 24 additions and 11 deletions
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8
drivers/misc/sgi-gru/grufault.c
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@@ -339,8 +339,12 @@ static int gru_try_dropin(struct gru_thread_state *gts,
* Might be a hardware race OR a stupid user. Ignore FMM because FMM
* is a transient state.
*/
if (tfh->status != TFHSTATUS_EXCEPTION)
goto failnoexception;
if (tfh->status != TFHSTATUS_EXCEPTION) {
gru_flush_cache(tfh);
if (tfh->status != TFHSTATUS_EXCEPTION)
goto failnoexception;
STAT(tfh_stale_on_fault);
}
if (tfh->state == TFHSTATE_IDLE)
goto failidle;
if (tfh->state == TFHSTATE_MISS_FMM && cb)