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Define cpu_mchkinfo() to locate the mchkinfo struct. This is used to fix

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the recent bug where Multias around the world have been aborting back to
SRM with no message at all as they tried to attach a TGA or VGA console,
because the old mchkinfo pointer wasn't allocated prior to use.

And contrary to widespread rumour, this bug has nothing to do with my
LCA IDE mod...that worked just fine. "Not guilty."
This commit is contained in:
ross 1998-07-13 19:07:33 +00:00
parent 0d7c1dede9
commit 48257ecec1
1 changed files with 15 additions and 5 deletions
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20
sys/arch/alpha/alpha/machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: machdep.c,v 1.137 1998/07/09 00:46:17 mjacob Exp $ */
/* $NetBSD: machdep.c,v 1.138 1998/07/13 19:07:33 ross Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
@ -79,7 +79,7 @@
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.137 1998/07/09 00:46:17 mjacob Exp $");
__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.138 1998/07/13 19:07:33 ross Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -234,8 +234,10 @@ u_int64_t cycles_per_usec;
/* number of cpus in the box. really! */
int ncpus;
/* machine check info array, fleshed out in allocsys */
struct mchkinfo *mchkinfo;
/* machine check info array, valloc()'ed in allocsys() */
static struct mchkinfo startup_info,
*mchkinfo_all_cpus;
struct bootinfo_kernel bootinfo;
@ -981,7 +983,7 @@ allocsys(v)
* of processor slots defined in the HWRPB and the whami
* value that can be returned.
*/
valloc(mchkinfo, struct mchkinfo, hwrpb->rpb_pcs_cnt);
valloc(mchkinfo_all_cpus, struct mchkinfo, hwrpb->rpb_pcs_cnt);
return (v);
#undef valloc
@ -2263,3 +2265,11 @@ alpha_XXX_dmamap(v) /* XXX */
return (vtophys(v) | alpha_XXX_dmamap_or); /* XXX */
} /* XXX */
/* XXX XXX END XXX XXX */
struct mchkinfo *
cpu_mchkinfo()
{
if (mchkinfo_all_cpus == NULL)
return &startup_info;
return mchkinfo_all_cpus + alpha_pal_whami();
}