diff options
Diffstat (limited to 'drivers/misc/sgi-gru/grumain.c')
| -rw-r--r-- | drivers/misc/sgi-gru/grumain.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/misc/sgi-gru/grumain.c b/drivers/misc/sgi-gru/grumain.c index 94402887188..a383271d391 100644 --- a/drivers/misc/sgi-gru/grumain.c +++ b/drivers/misc/sgi-gru/grumain.c @@ -499,6 +499,9 @@ static void gru_load_context_data(void *save, void *grubase, int ctxnum, memset(cbe + i * GRU_HANDLE_STRIDE, 0, GRU_CACHE_LINE_BYTES); } + /* Flush CBE to hide race in context restart */ + mb(); + gru_flush_cache(cbe + i * GRU_HANDLE_STRIDE); cb += GRU_HANDLE_STRIDE; } @@ -519,6 +522,12 @@ static void gru_unload_context_data(void *save, void *grubase, int ctxnum, cb = gseg + GRU_CB_BASE; cbe = grubase + GRU_CBE_BASE; length = hweight64(dsrmap) * GRU_DSR_AU_BYTES; + + /* CBEs may not be coherent. Flush them from cache */ + for_each_cbr_in_allocation_map(i, &cbrmap, scr) + gru_flush_cache(cbe + i * GRU_HANDLE_STRIDE); + mb(); /* Let the CL flush complete */ + gru_prefetch_context(gseg, cb, cbe, cbrmap, length); for_each_cbr_in_allocation_map(i, &cbrmap, scr) { |