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gru: fix cache coherency issues with instruction retry

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Fix two problems related to GRU instruction failures.  Cache coherency is
not maintained for CBEs except when loading or unloading contexts.  When
reading a CBE to extract error information, the CBE must first be flushed
from the cache.

The function that reads kerrnel CBEs was reading the wrong CBE.

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 16:28:28 -07:00
committed by Linus Torvalds
parent 270952a907
commit 1a2c09e3b4
4 changed files with 14 additions and 4 deletions
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drivers/misc/sgi-gru/grutables.h
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@@ -153,6 +153,7 @@
extern struct gru_stats_s gru_stats;
extern struct gru_blade_state *gru_base[];
extern unsigned long gru_start_paddr, gru_end_paddr;
extern void *gru_start_vaddr;
extern unsigned int gru_max_gids;
#define GRU_MAX_BLADES MAX_NUMNODES