diff options
| author | Jack Steiner | 2009-06-18 01:28:27 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2009-06-18 22:04:02 +0200 |
| commit | 270952a907220c0331fdaecbb55df892921c5e2d (patch) | |
| tree | 374bc1a642108f2c878a86903a70d8af8cd7a04a /drivers/misc/sgi-gru/grufault.c | |
| parent | gru: update gru kernel self tests (diff) | |
| download | kernel-qcow2-linux-270952a907220c0331fdaecbb55df892921c5e2d.tar.gz kernel-qcow2-linux-270952a907220c0331fdaecbb55df892921c5e2d.tar.xz kernel-qcow2-linux-270952a907220c0331fdaecbb55df892921c5e2d.zip | |
gru: update to rev 0.9 of gru spec
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>
Diffstat (limited to 'drivers/misc/sgi-gru/grufault.c')
| -rw-r--r-- | drivers/misc/sgi-gru/grufault.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c index 8443e90f9f6c..a489807613f8 100644 --- a/drivers/misc/sgi-gru/grufault.c +++ b/drivers/misc/sgi-gru/grufault.c @@ -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) |