x86, UV: Correct BAU software acknowledge
authorCliff Wickman <cpw@sgi.com>
Wed, 2 Jun 2010 21:22:02 +0000 (16:22 -0500)
committerIngo Molnar <mingo@elte.hu>
Tue, 8 Jun 2010 19:13:46 +0000 (21:13 +0200)
commit39847e7f3c8198b14102fe7ba4b3a6a1d84bbcfe
tree18d8b66fc06c036f516978a4826d75c0cc1a7676
parent4faca1550838708d71f6eea14cdacb0876c3a5a4
x86, UV: Correct BAU software acknowledge

Correct the acknowledgment and the reset of a BAU
software-acknowledged message.

A retry message should be testing only for timed-out resources
(mask << 8). (And we delete a log message that might cause
unnecessary concern) The acknowledge MMR is
|--timed-out--|---pending--|,  each is 8 bits.

The IPI-driven reset of software acknowledge resources frees
both timed out and pending resources.

Signed-off-by: Cliff Wickman <cpw@sgi.com>
Cc: gregkh@suse.de
LKML-Reference: <E1OJvNy-0004aP-7O@eag09.americas.sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/kernel/tlb_uv.c