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authorRuss Anderson <rja@efs.americas.sgi.com>2005-11-04 20:39:38 +0100
committerTony Luck <tony.luck@intel.com>2005-11-08 19:00:56 +0100
commita14f25a076a8e5040d6f4e93f84034c81bcddbf7 (patch)
treeff6c0d93ff410d549ee887001341b118574a4234 /arch/ia64
parentMerge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge (diff)
downloadlinux-a14f25a076a8e5040d6f4e93f84034c81bcddbf7.tar.xz
linux-a14f25a076a8e5040d6f4e93f84034c81bcddbf7.zip
[IA64] MCA recovery based on PSP bits
The determination of whether an MCA is recoverable or not must be based on the bits set in the PSP (Processor State Parameter). The specific bits are shown in the Intel IA-64 Architecture Software Developer's Manual, Vol 2, Table 11-6 Software Recovery Bits in Processor State Parameter. Those bits should be consistent across the entire IA-64 family of processors. Signed-off-by: Russ Anderson <rja@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64')
-rw-r--r--arch/ia64/kernel/mca_drv.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/arch/ia64/kernel/mca_drv.c b/arch/ia64/kernel/mca_drv.c
index f081c60ab206..eb860e293415 100644
--- a/arch/ia64/kernel/mca_drv.c
+++ b/arch/ia64/kernel/mca_drv.c
@@ -546,9 +546,20 @@ recover_from_processor_error(int platform, slidx_table_t *slidx,
(pal_processor_state_info_t*)peidx_psp(peidx);
/*
- * We cannot recover errors with other than bus_check.
+ * Processor recovery status must key off of the PAL recovery
+ * status in the Processor State Parameter.
*/
- if (psp->cc || psp->rc || psp->uc)
+
+ /*
+ * The machine check is corrected.
+ */
+ if (psp->cm == 1)
+ return 1;
+
+ /*
+ * The error was not contained. Software must be reset.
+ */
+ if (psp->us || psp->ci == 0)
return 0;
/*
@@ -569,8 +580,6 @@ recover_from_processor_error(int platform, slidx_table_t *slidx,
return 0;
if (pbci->eb && pbci->bsi > 0)
return 0;
- if (psp->ci == 0)
- return 0;
/*
* This is a local MCA and estimated as recoverble external bus error.