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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/ia64/kernel/mca_drv.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/ia64/kernel/mca_drv.c')
-rw-r--r--arch/ia64/kernel/mca_drv.c639
1 files changed, 639 insertions, 0 deletions
diff --git a/arch/ia64/kernel/mca_drv.c b/arch/ia64/kernel/mca_drv.c
new file mode 100644
index 000000000000..ab478172c349
--- /dev/null
+++ b/arch/ia64/kernel/mca_drv.c
@@ -0,0 +1,639 @@
1/*
2 * File: mca_drv.c
3 * Purpose: Generic MCA handling layer
4 *
5 * Copyright (C) 2004 FUJITSU LIMITED
6 * Copyright (C) Hidetoshi Seto (seto.hidetoshi@jp.fujitsu.com)
7 */
8#include <linux/config.h>
9#include <linux/types.h>
10#include <linux/init.h>
11#include <linux/sched.h>
12#include <linux/interrupt.h>
13#include <linux/irq.h>
14#include <linux/kallsyms.h>
15#include <linux/smp_lock.h>
16#include <linux/bootmem.h>
17#include <linux/acpi.h>
18#include <linux/timer.h>
19#include <linux/module.h>
20#include <linux/kernel.h>
21#include <linux/smp.h>
22#include <linux/workqueue.h>
23#include <linux/mm.h>
24
25#include <asm/delay.h>
26#include <asm/machvec.h>
27#include <asm/page.h>
28#include <asm/ptrace.h>
29#include <asm/system.h>
30#include <asm/sal.h>
31#include <asm/mca.h>
32
33#include <asm/irq.h>
34#include <asm/hw_irq.h>
35
36#include "mca_drv.h"
37
38/* max size of SAL error record (default) */
39static int sal_rec_max = 10000;
40
41/* from mca.c */
42static ia64_mca_sal_to_os_state_t *sal_to_os_handoff_state;
43static ia64_mca_os_to_sal_state_t *os_to_sal_handoff_state;
44
45/* from mca_drv_asm.S */
46extern void *mca_handler_bhhook(void);
47
48static DEFINE_SPINLOCK(mca_bh_lock);
49
50typedef enum {
51 MCA_IS_LOCAL = 0,
52 MCA_IS_GLOBAL = 1
53} mca_type_t;
54
55#define MAX_PAGE_ISOLATE 1024
56
57static struct page *page_isolate[MAX_PAGE_ISOLATE];
58static int num_page_isolate = 0;
59
60typedef enum {
61 ISOLATE_NG = 0,
62 ISOLATE_OK = 1
63} isolate_status_t;
64
65/*
66 * This pool keeps pointers to the section part of SAL error record
67 */
68static struct {
69 slidx_list_t *buffer; /* section pointer list pool */
70 int cur_idx; /* Current index of section pointer list pool */
71 int max_idx; /* Maximum index of section pointer list pool */
72} slidx_pool;
73
74/**
75 * mca_page_isolate - isolate a poisoned page in order not to use it later
76 * @paddr: poisoned memory location
77 *
78 * Return value:
79 * ISOLATE_OK / ISOLATE_NG
80 */
81
82static isolate_status_t
83mca_page_isolate(unsigned long paddr)
84{
85 int i;
86 struct page *p;
87
88 /* whether physical address is valid or not */
89 if ( !ia64_phys_addr_valid(paddr) )
90 return ISOLATE_NG;
91
92 /* convert physical address to physical page number */
93 p = pfn_to_page(paddr>>PAGE_SHIFT);
94
95 /* check whether a page number have been already registered or not */
96 for( i = 0; i < num_page_isolate; i++ )
97 if( page_isolate[i] == p )
98 return ISOLATE_OK; /* already listed */
99
100 /* limitation check */
101 if( num_page_isolate == MAX_PAGE_ISOLATE )
102 return ISOLATE_NG;
103
104 /* kick pages having attribute 'SLAB' or 'Reserved' */
105 if( PageSlab(p) || PageReserved(p) )
106 return ISOLATE_NG;
107
108 /* add attribute 'Reserved' and register the page */
109 SetPageReserved(p);
110 page_isolate[num_page_isolate++] = p;
111
112 return ISOLATE_OK;
113}
114
115/**
116 * mca_hanlder_bh - Kill the process which occurred memory read error
117 * @paddr: poisoned address received from MCA Handler
118 */
119
120void
121mca_handler_bh(unsigned long paddr)
122{
123 printk(KERN_DEBUG "OS_MCA: process [pid: %d](%s) encounters MCA.\n",
124 current->pid, current->comm);
125
126 spin_lock(&mca_bh_lock);
127 if (mca_page_isolate(paddr) == ISOLATE_OK) {
128 printk(KERN_DEBUG "Page isolation: ( %lx ) success.\n", paddr);
129 } else {
130 printk(KERN_DEBUG "Page isolation: ( %lx ) failure.\n", paddr);
131 }
132 spin_unlock(&mca_bh_lock);
133
134 /* This process is about to be killed itself */
135 force_sig(SIGKILL, current);
136 schedule();
137}
138
139/**
140 * mca_make_peidx - Make index of processor error section
141 * @slpi: pointer to record of processor error section
142 * @peidx: pointer to index of processor error section
143 */
144
145static void
146mca_make_peidx(sal_log_processor_info_t *slpi, peidx_table_t *peidx)
147{
148 /*
149 * calculate the start address of
150 * "struct cpuid_info" and "sal_processor_static_info_t".
151 */
152 u64 total_check_num = slpi->valid.num_cache_check
153 + slpi->valid.num_tlb_check
154 + slpi->valid.num_bus_check
155 + slpi->valid.num_reg_file_check
156 + slpi->valid.num_ms_check;
157 u64 head_size = sizeof(sal_log_mod_error_info_t) * total_check_num
158 + sizeof(sal_log_processor_info_t);
159 u64 mid_size = slpi->valid.cpuid_info * sizeof(struct sal_cpuid_info);
160
161 peidx_head(peidx) = slpi;
162 peidx_mid(peidx) = (struct sal_cpuid_info *)
163 (slpi->valid.cpuid_info ? ((char*)slpi + head_size) : NULL);
164 peidx_bottom(peidx) = (sal_processor_static_info_t *)
165 (slpi->valid.psi_static_struct ?
166 ((char*)slpi + head_size + mid_size) : NULL);
167}
168
169/**
170 * mca_make_slidx - Make index of SAL error record
171 * @buffer: pointer to SAL error record
172 * @slidx: pointer to index of SAL error record
173 *
174 * Return value:
175 * 1 if record has platform error / 0 if not
176 */
177#define LOG_INDEX_ADD_SECT_PTR(sect, ptr) \
178 { slidx_list_t *hl = &slidx_pool.buffer[slidx_pool.cur_idx]; \
179 hl->hdr = ptr; \
180 list_add(&hl->list, &(sect)); \
181 slidx_pool.cur_idx = (slidx_pool.cur_idx + 1)%slidx_pool.max_idx; }
182
183static int
184mca_make_slidx(void *buffer, slidx_table_t *slidx)
185{
186 int platform_err = 0;
187 int record_len = ((sal_log_record_header_t*)buffer)->len;
188 u32 ercd_pos;
189 int sects;
190 sal_log_section_hdr_t *sp;
191
192 /*
193 * Initialize index referring current record
194 */
195 INIT_LIST_HEAD(&(slidx->proc_err));
196 INIT_LIST_HEAD(&(slidx->mem_dev_err));
197 INIT_LIST_HEAD(&(slidx->sel_dev_err));
198 INIT_LIST_HEAD(&(slidx->pci_bus_err));
199 INIT_LIST_HEAD(&(slidx->smbios_dev_err));
200 INIT_LIST_HEAD(&(slidx->pci_comp_err));
201 INIT_LIST_HEAD(&(slidx->plat_specific_err));
202 INIT_LIST_HEAD(&(slidx->host_ctlr_err));
203 INIT_LIST_HEAD(&(slidx->plat_bus_err));
204 INIT_LIST_HEAD(&(slidx->unsupported));
205
206 /*
207 * Extract a Record Header
208 */
209 slidx->header = buffer;
210
211 /*
212 * Extract each section records
213 * (arranged from "int ia64_log_platform_info_print()")
214 */
215 for (ercd_pos = sizeof(sal_log_record_header_t), sects = 0;
216 ercd_pos < record_len; ercd_pos += sp->len, sects++) {
217 sp = (sal_log_section_hdr_t *)((char*)buffer + ercd_pos);
218 if (!efi_guidcmp(sp->guid, SAL_PROC_DEV_ERR_SECT_GUID)) {
219 LOG_INDEX_ADD_SECT_PTR(slidx->proc_err, sp);
220 } else if (!efi_guidcmp(sp->guid, SAL_PLAT_MEM_DEV_ERR_SECT_GUID)) {
221 platform_err = 1;
222 LOG_INDEX_ADD_SECT_PTR(slidx->mem_dev_err, sp);
223 } else if (!efi_guidcmp(sp->guid, SAL_PLAT_SEL_DEV_ERR_SECT_GUID)) {
224 platform_err = 1;
225 LOG_INDEX_ADD_SECT_PTR(slidx->sel_dev_err, sp);
226 } else if (!efi_guidcmp(sp->guid, SAL_PLAT_PCI_BUS_ERR_SECT_GUID)) {
227 platform_err = 1;
228 LOG_INDEX_ADD_SECT_PTR(slidx->pci_bus_err, sp);
229 } else if (!efi_guidcmp(sp->guid, SAL_PLAT_SMBIOS_DEV_ERR_SECT_GUID)) {
230 platform_err = 1;
231 LOG_INDEX_ADD_SECT_PTR(slidx->smbios_dev_err, sp);
232 } else if (!efi_guidcmp(sp->guid, SAL_PLAT_PCI_COMP_ERR_SECT_GUID)) {
233 platform_err = 1;
234 LOG_INDEX_ADD_SECT_PTR(slidx->pci_comp_err, sp);
235 } else if (!efi_guidcmp(sp->guid, SAL_PLAT_SPECIFIC_ERR_SECT_GUID)) {
236 platform_err = 1;
237 LOG_INDEX_ADD_SECT_PTR(slidx->plat_specific_err, sp);
238 } else if (!efi_guidcmp(sp->guid, SAL_PLAT_HOST_CTLR_ERR_SECT_GUID)) {
239 platform_err = 1;
240 LOG_INDEX_ADD_SECT_PTR(slidx->host_ctlr_err, sp);
241 } else if (!efi_guidcmp(sp->guid, SAL_PLAT_BUS_ERR_SECT_GUID)) {
242 platform_err = 1;
243 LOG_INDEX_ADD_SECT_PTR(slidx->plat_bus_err, sp);
244 } else {
245 LOG_INDEX_ADD_SECT_PTR(slidx->unsupported, sp);
246 }
247 }
248 slidx->n_sections = sects;
249
250 return platform_err;
251}
252
253/**
254 * init_record_index_pools - Initialize pool of lists for SAL record index
255 *
256 * Return value:
257 * 0 on Success / -ENOMEM on Failure
258 */
259static int
260init_record_index_pools(void)
261{
262 int i;
263 int rec_max_size; /* Maximum size of SAL error records */
264 int sect_min_size; /* Minimum size of SAL error sections */
265 /* minimum size table of each section */
266 static int sal_log_sect_min_sizes[] = {
267 sizeof(sal_log_processor_info_t) + sizeof(sal_processor_static_info_t),
268 sizeof(sal_log_mem_dev_err_info_t),
269 sizeof(sal_log_sel_dev_err_info_t),
270 sizeof(sal_log_pci_bus_err_info_t),
271 sizeof(sal_log_smbios_dev_err_info_t),
272 sizeof(sal_log_pci_comp_err_info_t),
273 sizeof(sal_log_plat_specific_err_info_t),
274 sizeof(sal_log_host_ctlr_err_info_t),
275 sizeof(sal_log_plat_bus_err_info_t),
276 };
277
278 /*
279 * MCA handler cannot allocate new memory on flight,
280 * so we preallocate enough memory to handle a SAL record.
281 *
282 * Initialize a handling set of slidx_pool:
283 * 1. Pick up the max size of SAL error records
284 * 2. Pick up the min size of SAL error sections
285 * 3. Allocate the pool as enough to 2 SAL records
286 * (now we can estimate the maxinum of section in a record.)
287 */
288
289 /* - 1 - */
290 rec_max_size = sal_rec_max;
291
292 /* - 2 - */
293 sect_min_size = sal_log_sect_min_sizes[0];
294 for (i = 1; i < sizeof sal_log_sect_min_sizes/sizeof(size_t); i++)
295 if (sect_min_size > sal_log_sect_min_sizes[i])
296 sect_min_size = sal_log_sect_min_sizes[i];
297
298 /* - 3 - */
299 slidx_pool.max_idx = (rec_max_size/sect_min_size) * 2 + 1;
300 slidx_pool.buffer = (slidx_list_t *) kmalloc(slidx_pool.max_idx * sizeof(slidx_list_t), GFP_KERNEL);
301
302 return slidx_pool.buffer ? 0 : -ENOMEM;
303}
304
305
306/*****************************************************************************
307 * Recovery functions *
308 *****************************************************************************/
309
310/**
311 * is_mca_global - Check whether this MCA is global or not
312 * @peidx: pointer of index of processor error section
313 * @pbci: pointer to pal_bus_check_info_t
314 *
315 * Return value:
316 * MCA_IS_LOCAL / MCA_IS_GLOBAL
317 */
318
319static mca_type_t
320is_mca_global(peidx_table_t *peidx, pal_bus_check_info_t *pbci)
321{
322 pal_processor_state_info_t *psp = (pal_processor_state_info_t*)peidx_psp(peidx);
323
324 /*
325 * PAL can request a rendezvous, if the MCA has a global scope.
326 * If "rz_always" flag is set, SAL requests MCA rendezvous
327 * in spite of global MCA.
328 * Therefore it is local MCA when rendezvous has not been requested.
329 * Failed to rendezvous, the system must be down.
330 */
331 switch (sal_to_os_handoff_state->imsto_rendez_state) {
332 case -1: /* SAL rendezvous unsuccessful */
333 return MCA_IS_GLOBAL;
334 case 0: /* SAL rendezvous not required */
335 return MCA_IS_LOCAL;
336 case 1: /* SAL rendezvous successful int */
337 case 2: /* SAL rendezvous successful int with init */
338 default:
339 break;
340 }
341
342 /*
343 * If One or more Cache/TLB/Reg_File/Uarch_Check is here,
344 * it would be a local MCA. (i.e. processor internal error)
345 */
346 if (psp->tc || psp->cc || psp->rc || psp->uc)
347 return MCA_IS_LOCAL;
348
349 /*
350 * Bus_Check structure with Bus_Check.ib (internal bus error) flag set
351 * would be a global MCA. (e.g. a system bus address parity error)
352 */
353 if (!pbci || pbci->ib)
354 return MCA_IS_GLOBAL;
355
356 /*
357 * Bus_Check structure with Bus_Check.eb (external bus error) flag set
358 * could be either a local MCA or a global MCA.
359 *
360 * Referring Bus_Check.bsi:
361 * 0: Unknown/unclassified
362 * 1: BERR#
363 * 2: BINIT#
364 * 3: Hard Fail
365 * (FIXME: Are these SGI specific or generic bsi values?)
366 */
367 if (pbci->eb)
368 switch (pbci->bsi) {
369 case 0:
370 /* e.g. a load from poisoned memory */
371 return MCA_IS_LOCAL;
372 case 1:
373 case 2:
374 case 3:
375 return MCA_IS_GLOBAL;
376 }
377
378 return MCA_IS_GLOBAL;
379}
380
381/**
382 * recover_from_read_error - Try to recover the errors which type are "read"s.
383 * @slidx: pointer of index of SAL error record
384 * @peidx: pointer of index of processor error section
385 * @pbci: pointer of pal_bus_check_info
386 *
387 * Return value:
388 * 1 on Success / 0 on Failure
389 */
390
391static int
392recover_from_read_error(slidx_table_t *slidx, peidx_table_t *peidx, pal_bus_check_info_t *pbci)
393{
394 sal_log_mod_error_info_t *smei;
395 pal_min_state_area_t *pmsa;
396 struct ia64_psr *psr1, *psr2;
397 ia64_fptr_t *mca_hdlr_bh = (ia64_fptr_t*)mca_handler_bhhook;
398
399 /* Is target address valid? */
400 if (!pbci->tv)
401 return 0;
402
403 /*
404 * cpu read or memory-mapped io read
405 *
406 * offending process affected process OS MCA do
407 * kernel mode kernel mode down system
408 * kernel mode user mode kill the process
409 * user mode kernel mode down system (*)
410 * user mode user mode kill the process
411 *
412 * (*) You could terminate offending user-mode process
413 * if (pbci->pv && pbci->pl != 0) *and* if you sure
414 * the process not have any locks of kernel.
415 */
416
417 psr1 =(struct ia64_psr *)&(peidx_minstate_area(peidx)->pmsa_ipsr);
418
419 /*
420 * Check the privilege level of interrupted context.
421 * If it is user-mode, then terminate affected process.
422 */
423 if (psr1->cpl != 0) {
424 smei = peidx_bus_check(peidx, 0);
425 if (smei->valid.target_identifier) {
426 /*
427 * setup for resume to bottom half of MCA,
428 * "mca_handler_bhhook"
429 */
430 pmsa = (pal_min_state_area_t *)(sal_to_os_handoff_state->pal_min_state | (6ul<<61));
431 /* pass to bhhook as 1st argument (gr8) */
432 pmsa->pmsa_gr[8-1] = smei->target_identifier;
433 /* set interrupted return address (but no use) */
434 pmsa->pmsa_br0 = pmsa->pmsa_iip;
435 /* change resume address to bottom half */
436 pmsa->pmsa_iip = mca_hdlr_bh->fp;
437 pmsa->pmsa_gr[1-1] = mca_hdlr_bh->gp;
438 /* set cpl with kernel mode */
439 psr2 = (struct ia64_psr *)&pmsa->pmsa_ipsr;
440 psr2->cpl = 0;
441 psr2->ri = 0;
442
443 return 1;
444 }
445
446 }
447
448 return 0;
449}
450
451/**
452 * recover_from_platform_error - Recover from platform error.
453 * @slidx: pointer of index of SAL error record
454 * @peidx: pointer of index of processor error section
455 * @pbci: pointer of pal_bus_check_info
456 *
457 * Return value:
458 * 1 on Success / 0 on Failure
459 */
460
461static int
462recover_from_platform_error(slidx_table_t *slidx, peidx_table_t *peidx, pal_bus_check_info_t *pbci)
463{
464 int status = 0;
465 pal_processor_state_info_t *psp = (pal_processor_state_info_t*)peidx_psp(peidx);
466
467 if (psp->bc && pbci->eb && pbci->bsi == 0) {
468 switch(pbci->type) {
469 case 1: /* partial read */
470 case 3: /* full line(cpu) read */
471 case 9: /* I/O space read */
472 status = recover_from_read_error(slidx, peidx, pbci);
473 break;
474 case 0: /* unknown */
475 case 2: /* partial write */
476 case 4: /* full line write */
477 case 5: /* implicit or explicit write-back operation */
478 case 6: /* snoop probe */
479 case 7: /* incoming or outgoing ptc.g */
480 case 8: /* write coalescing transactions */
481 case 10: /* I/O space write */
482 case 11: /* inter-processor interrupt message(IPI) */
483 case 12: /* interrupt acknowledge or external task priority cycle */
484 default:
485 break;
486 }
487 }
488
489 return status;
490}
491
492/**
493 * recover_from_processor_error
494 * @platform: whether there are some platform error section or not
495 * @slidx: pointer of index of SAL error record
496 * @peidx: pointer of index of processor error section
497 * @pbci: pointer of pal_bus_check_info
498 *
499 * Return value:
500 * 1 on Success / 0 on Failure
501 */
502/*
503 * Later we try to recover when below all conditions are satisfied.
504 * 1. Only one processor error section is exist.
505 * 2. BUS_CHECK is exist and the others are not exist.(Except TLB_CHECK)
506 * 3. The entry of BUS_CHECK_INFO is 1.
507 * 4. "External bus error" flag is set and the others are not set.
508 */
509
510static int
511recover_from_processor_error(int platform, slidx_table_t *slidx, peidx_table_t *peidx, pal_bus_check_info_t *pbci)
512{
513 pal_processor_state_info_t *psp = (pal_processor_state_info_t*)peidx_psp(peidx);
514
515 /*
516 * We cannot recover errors with other than bus_check.
517 */
518 if (psp->cc || psp->rc || psp->uc)
519 return 0;
520
521 /*
522 * If there is no bus error, record is weird but we need not to recover.
523 */
524 if (psp->bc == 0 || pbci == NULL)
525 return 1;
526
527 /*
528 * Sorry, we cannot handle so many.
529 */
530 if (peidx_bus_check_num(peidx) > 1)
531 return 0;
532 /*
533 * Well, here is only one bus error.
534 */
535 if (pbci->ib || pbci->cc)
536 return 0;
537 if (pbci->eb && pbci->bsi > 0)
538 return 0;
539 if (psp->ci == 0)
540 return 0;
541
542 /*
543 * This is a local MCA and estimated as recoverble external bus error.
544 * (e.g. a load from poisoned memory)
545 * This means "there are some platform errors".
546 */
547 if (platform)
548 return recover_from_platform_error(slidx, peidx, pbci);
549 /*
550 * On account of strange SAL error record, we cannot recover.
551 */
552 return 0;
553}
554
555/**
556 * mca_try_to_recover - Try to recover from MCA
557 * @rec: pointer to a SAL error record
558 *
559 * Return value:
560 * 1 on Success / 0 on Failure
561 */
562
563static int
564mca_try_to_recover(void *rec,
565 ia64_mca_sal_to_os_state_t *sal_to_os_state,
566 ia64_mca_os_to_sal_state_t *os_to_sal_state)
567{
568 int platform_err;
569 int n_proc_err;
570 slidx_table_t slidx;
571 peidx_table_t peidx;
572 pal_bus_check_info_t pbci;
573
574 /* handoff state from/to mca.c */
575 sal_to_os_handoff_state = sal_to_os_state;
576 os_to_sal_handoff_state = os_to_sal_state;
577
578 /* Make index of SAL error record */
579 platform_err = mca_make_slidx(rec, &slidx);
580
581 /* Count processor error sections */
582 n_proc_err = slidx_count(&slidx, proc_err);
583
584 /* Now, OS can recover when there is one processor error section */
585 if (n_proc_err > 1)
586 return 0;
587 else if (n_proc_err == 0) {
588 /* Weird SAL record ... We need not to recover */
589
590 return 1;
591 }
592
593 /* Make index of processor error section */
594 mca_make_peidx((sal_log_processor_info_t*)slidx_first_entry(&slidx.proc_err)->hdr, &peidx);
595
596 /* Extract Processor BUS_CHECK[0] */
597 *((u64*)&pbci) = peidx_check_info(&peidx, bus_check, 0);
598
599 /* Check whether MCA is global or not */
600 if (is_mca_global(&peidx, &pbci))
601 return 0;
602
603 /* Try to recover a processor error */
604 return recover_from_processor_error(platform_err, &slidx, &peidx, &pbci);
605}
606
607/*
608 * =============================================================================
609 */
610
611int __init mca_external_handler_init(void)
612{
613 if (init_record_index_pools())
614 return -ENOMEM;
615
616 /* register external mca handlers */
617 if (ia64_reg_MCA_extension(mca_try_to_recover)){
618 printk(KERN_ERR "ia64_reg_MCA_extension failed.\n");
619 kfree(slidx_pool.buffer);
620 return -EFAULT;
621 }
622 return 0;
623}
624
625void __exit mca_external_handler_exit(void)
626{
627 /* unregister external mca handlers */
628 ia64_unreg_MCA_extension();
629 kfree(slidx_pool.buffer);
630}
631
632module_init(mca_external_handler_init);
633module_exit(mca_external_handler_exit);
634
635module_param(sal_rec_max, int, 0644);
636MODULE_PARM_DESC(sal_rec_max, "Max size of SAL error record");
637
638MODULE_DESCRIPTION("ia64 platform dependent mca handler driver");
639MODULE_LICENSE("GPL");