Re: 2.5.43 IO-APIC bug and spinlock deadlock

From: Andrew Morton (akpm@digeo.com)
Date: Wed Oct 16 2002 - 23:40:24 EST


Doug Ledford wrote:
>
> On Wed, Oct 16, 2002 at 11:33:02PM -0400, Doug Ledford wrote:
> > IO-APIC bug: regular kernel, UP, no IO-APIC or APIC on UP enabled, compile
> > fails (does *everyone* run SMP or at least UP + APIC now?)
>
> OK, this is real.
>

Linus has merged a patch for this. Does it work for you? I don't
think you've sent us any error output.

 include/asm-i386/apic.h | 4 ++--
 include/asm-i386/smp.h | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

--- 2.5.43/include/asm-i386/smp.h~mpparse-fix Tue Oct 15 21:26:18 2002
+++ 2.5.43-akpm/include/asm-i386/smp.h Tue Oct 15 21:26:31 2002
@@ -37,6 +37,7 @@
  #endif /* CONFIG_CLUSTERED_APIC */
 #endif
 
+#define BAD_APICID 0xFFu
 #ifdef CONFIG_SMP
 #ifndef __ASSEMBLY__
 
@@ -65,7 +66,6 @@ extern void zap_low_mappings (void);
  * the real APIC ID <-> CPU # mapping.
  */
 #define MAX_APICID 256
-#define BAD_APICID 0xFFu
 extern volatile int cpu_to_physical_apicid[NR_CPUS];
 extern volatile int physical_apicid_to_cpu[MAX_APICID];
 extern volatile int cpu_to_logical_apicid[NR_CPUS];
--- 2.5.43/include/asm-i386/apic.h~mpparse-fix Tue Oct 15 21:34:03 2002
+++ 2.5.43-akpm/include/asm-i386/apic.h Tue Oct 15 21:34:05 2002
@@ -7,8 +7,6 @@
 #include <asm/apicdef.h>
 #include <asm/system.h>
 
-#ifdef CONFIG_X86_LOCAL_APIC
-
 #define APIC_DEBUG 0
 
 #if APIC_DEBUG
@@ -17,6 +15,8 @@
 #define Dprintk(x...)
 #endif
 
+#ifdef CONFIG_X86_LOCAL_APIC
+
 /*
  * Basic functions accessing APICs.
  */

.
-
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