[PATCH] s390: improved machine check handling

Improved machine check handling.  Kernel is now able to receive machine checks
while in kernel mode (system call, interrupt and program check handling).
Also register validation is now performed.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 30 insertions, 5 deletions

diff --git a/drivers/s390/s390mach.h b/drivers/s390/s390mach.h
index 7e26f0f1b0dc..4eaa70179182 100644
--- a/drivers/s390/s390mach.h
+++ b/drivers/s390/s390mach.h
@@ -16,20 +16,45 @@ struct mci {
         __u32   sd              :  1; /* 00 system damage */
         __u32   pd              :  1; /* 01 instruction-processing damage */
         __u32   sr              :  1; /* 02 system recovery */
-        __u32   to_be_defined_1 :  4; /* 03-06 */
+        __u32   to_be_defined_1 :  1; /* 03 */
+        __u32   cd              :  1; /* 04 timing-facility damage */
+        __u32   ed              :  1; /* 05 external damage */
+        __u32   to_be_defined_2 :  1; /* 06 */
         __u32   dg              :  1; /* 07 degradation */
         __u32   w               :  1; /* 08 warning pending */
         __u32   cp              :  1; /* 09 channel-report pending */
-        __u32   to_be_defined_2 :  6; /* 10-15 */
+        __u32   sp              :  1; /* 10 service-processor damage */
+        __u32   ck              :  1; /* 11 channel-subsystem damage */
+        __u32   to_be_defined_3 :  2; /* 12-13 */
+        __u32   b               :  1; /* 14 backed up */
+        __u32   to_be_defined_4 :  1; /* 15 */
         __u32   se              :  1; /* 16 storage error uncorrected */
         __u32   sc              :  1; /* 17 storage error corrected */
         __u32   ke              :  1; /* 18 storage-key error uncorrected */
         __u32   ds              :  1; /* 19 storage degradation */
-        __u32   to_be_defined_3 :  4; /* 20-23 */
+        __u32   wp              :  1; /* 20 psw mwp validity */
+        __u32   ms              :  1; /* 21 psw mask and key validity */
+        __u32   pm              :  1; /* 22 psw program mask and cc validity */
+        __u32   ia              :  1; /* 23 psw instruction address validity */
         __u32   fa              :  1; /* 24 failing storage address validity */
-        __u32   to_be_defined_4 :  7; /* 25-31 */
+        __u32   to_be_defined_5 :  1; /* 25 */
+        __u32   ec              :  1; /* 26 external damage code validity */
+        __u32   fp              :  1; /* 27 floating point register validity */
+        __u32   gr              :  1; /* 28 general register validity */
+        __u32   cr              :  1; /* 29 control register validity */
+        __u32   to_be_defined_6 :  1; /* 30 */
+        __u32   st              :  1; /* 31 storage logical validity */
         __u32   ie              :  1; /* 32 indirect storage error */
-        __u32   to_be_defined_5 : 31; /* 33-63 */
+        __u32   ar              :  1; /* 33 access register validity */
+        __u32   da              :  1; /* 34 delayed access exception */
+        __u32   to_be_defined_7 :  7; /* 35-41 */
+        __u32   pr              :  1; /* 42 tod programmable register validity */
+        __u32   fc              :  1; /* 43 fp control register validity */
+        __u32   ap              :  1; /* 44 ancillary report */
+        __u32   to_be_defined_8 :  1; /* 45 */
+        __u32   ct              :  1; /* 46 cpu timer validity */
+        __u32   cc              :  1; /* 47 clock comparator validity */
+        __u32   to_be_defined_9 : 16; /* 47-63 */
 };
 
 /*