On Fri, 15 Sep 2006 11:23:49 -0400
Dave Jones <[email protected]> wrote:
> On Fri, Sep 15, 2006 at 01:23:02AM -0700, Andrew Morton wrote:
>
> > > > Thanks. Andi has already queued a similar patch.
> > > >
> > > > Andi, you might as well scoot that upstream, otherwise we'll get lots of
> > > > emails about it.
> > > ...
> > > > > +#if 0xFF >= MAX_MP_BUSSES
> > > > > if (m->mpc_busid >= MAX_MP_BUSSES) {
> > > I don't know how Andi has fixed it,
> > Same thing. (He has `#if MAX_MP_BUSSES < 256').
>
> How can this be the right the right thing to do ?
> It should *never* be >=256. mach-summit/mach-generic need fixing
> to be 255, not this ridiculous band-aid. Where did 260 come from anyway?
>
commit f0bacaf5cec4e677a00b5ab06d95664d03a30f7a
Author: akpm <akpm>
Date: Mon Apr 12 20:06:32 2004 +0000
[PATCH] summmit: increase MAX_MP_BUSSES
From: James Cleverdon <[email protected]>
Bump up MAX_MP_BUSSES for summit/generic subarch to cope with big IBM x440
systems.
BKrev: 407af6c8l8rvwRmEU-JHTS98MurIZA
diff --git a/include/asm-i386/mach-generic/mach_mpspec.h b/include/asm-i386/mach-generic/mach_mpspec.h
index ef10cd2..fbb6a40 100644
--- a/include/asm-i386/mach-generic/mach_mpspec.h
+++ b/include/asm-i386/mach-generic/mach_mpspec.h
@@ -8,6 +8,8 @@ #define MAX_APICS 256
#define MAX_IRQ_SOURCES 256
-#define MAX_MP_BUSSES 32
+/* Summit or generic (i.e. installer) kernels need lots of bus entries. */
+/* Maximum 256 PCI busses, plus 1 ISA bus in each of 4 cabinets. */
+#define MAX_MP_BUSSES 260
#endif /* __ASM_MACH_MPSPEC_H */
diff --git a/include/asm-i386/mach-summit/mach_mpspec.h b/include/asm-i386/mach-summit/mach_mpspec.h
index ef10cd2..bc8f717 100644
--- a/include/asm-i386/mach-summit/mach_mpspec.h
+++ b/include/asm-i386/mach-summit/mach_mpspec.h
@@ -8,6 +8,7 @@ #define MAX_APICS 256
#define MAX_IRQ_SOURCES 256
-#define MAX_MP_BUSSES 32
+/* Maximum 256 PCI busses, plus 1 ISA bus in each of 4 cabinets. */
+#define MAX_MP_BUSSES 260
#endif /* __ASM_MACH_MPSPEC_H */
-
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