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gru: bug fixes for GRU exception handling

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Bug fixes for GRU exception handling.  Additional fields from the CBR must
be returned to the user to allow the user to correctly diagnose GRU
exceptions.

Handle endcase in TFH TLB miss handling.  Verify that TFH actually
indicates a pending exception.

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 16:28:19 -07:00
committed by Linus Torvalds
parent d6580a9f15
commit cd1334f03f
6 changed files with 52 additions and 26 deletions
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3
drivers/misc/sgi-gru/grumain.c
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@@ -599,6 +599,9 @@ int gru_update_cch(struct gru_thread_state *gts, int force_unload)
cch->sizeavail[i] = gts->ts_sizeavail;
gts->ts_tlb_int_select = gru_cpu_fault_map_id();
cch->tlb_int_select = gru_cpu_fault_map_id();
cch->tfm_fault_bit_enable =
(gts->ts_user_options == GRU_OPT_MISS_FMM_POLL
|| gts->ts_user_options == GRU_OPT_MISS_FMM_INTR);
} else {
for (i = 0; i < 8; i++)
cch->asid[i] = 0;