* [PATCH][2.5] static MAX_MP_BUSSES increase for Summit boxes
@ 2003-05-24 3:27 James Cleverdon
2003-05-24 6:28 ` Christoph Hellwig
2003-05-26 23:59 ` Alan Cox
0 siblings, 2 replies; 3+ messages in thread
From: James Cleverdon @ 2003-05-24 3:27 UTC (permalink / raw)
To: Martin J. Bligh, linux-kernel
The dynamic MAX_MP_BUSSES fix for v2.4 never made it into 2.5. x440s with
RXE100s and 32-way x445s without can easily overflow it.
Here's a static patch:
diff -pru 2.5.69/include/asm-i386/mpspec.h t69/include/asm-i386/mpspec.h
--- 2.5.69/include/asm-i386/mpspec.h Sun May 4 16:52:48 2003
+++ t69/include/asm-i386/mpspec.h Fri May 23 20:17:59 2003
@@ -191,7 +191,13 @@ struct mpc_config_translation
#define MAX_IRQ_SOURCES 256
#endif /* CONFIG_X86_NUMAQ */
+#ifdef CONFIG_X86_SUMMIT
+/* BIOS reserves an amazing number of PCI busses on x440s and x445s,
+ * especially when RXE100s are attached. */
+#define MAX_MP_BUSSES 258
+#else
#define MAX_MP_BUSSES 32
+#endif
enum mp_bustype {
MP_BUS_ISA = 1,
MP_BUS_EISA,
--
James Cleverdon
IBM xSeries Linux Solutions
{jamesclv(Unix, preferred), cleverdj(Notes)} at us dot ibm dot com
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH][2.5] static MAX_MP_BUSSES increase for Summit boxes
2003-05-24 3:27 [PATCH][2.5] static MAX_MP_BUSSES increase for Summit boxes James Cleverdon
@ 2003-05-24 6:28 ` Christoph Hellwig
2003-05-26 23:59 ` Alan Cox
1 sibling, 0 replies; 3+ messages in thread
From: Christoph Hellwig @ 2003-05-24 6:28 UTC (permalink / raw)
To: James Cleverdon; +Cc: Martin J. Bligh, linux-kernel
On Fri, May 23, 2003 at 08:27:26PM -0700, James Cleverdon wrote:
> The dynamic MAX_MP_BUSSES fix for v2.4 never made it into 2.5. x440s with
> RXE100s and 32-way x445s without can easily overflow it.
>
> Here's a static patch:
Umm, no. Please forward port the dynamic MAX_MP_BUSSES changes instead of
such a hack.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH][2.5] static MAX_MP_BUSSES increase for Summit boxes
2003-05-24 3:27 [PATCH][2.5] static MAX_MP_BUSSES increase for Summit boxes James Cleverdon
2003-05-24 6:28 ` Christoph Hellwig
@ 2003-05-26 23:59 ` Alan Cox
1 sibling, 0 replies; 3+ messages in thread
From: Alan Cox @ 2003-05-26 23:59 UTC (permalink / raw)
To: James Cleverdon; +Cc: Martin J. Bligh, Linux Kernel Mailing List
On Sad, 2003-05-24 at 04:27, James Cleverdon wrote:
> The dynamic MAX_MP_BUSSES fix for v2.4 never made it into 2.5. x440s with
> RXE100s and 32-way x445s without can easily overflow it.
>
> Here's a static patch:
Port the proper fix surely
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2003-05-27 0:44 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2003-05-24 3:27 [PATCH][2.5] static MAX_MP_BUSSES increase for Summit boxes James Cleverdon
2003-05-24 6:28 ` Christoph Hellwig
2003-05-26 23:59 ` Alan Cox
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