the attached patch fixes the NMI watchdog to trigger on all CPUs - the
cpu_up() code broke it long time ago. With this patch NMI interrupts get
generated on all CPUs, not just the boot CPU.
Ingo
--- linux/arch/i386/kernel/io_apic.c.orig Mon Sep 9 21:34:53 2002
+++ linux/arch/i386/kernel/io_apic.c Mon Sep 9 21:37:27 2002
@@ -1490,7 +1490,7 @@
end_lapic_irq
};
-static void enable_NMI_through_LVT0 (void * dummy)
+void enable_NMI_through_LVT0 (void * dummy)
{
unsigned int v, ver;
--- linux/arch/i386/kernel/smpboot.c.orig Mon Sep 9 21:35:48 2002
+++ linux/arch/i386/kernel/smpboot.c Mon Sep 9 21:43:00 2002
@@ -452,6 +452,11 @@
while (!test_bit(smp_processor_id(), &smp_commenced_mask))
rep_nop();
setup_secondary_APIC_clock();
+ if (nmi_watchdog == NMI_IO_APIC) {
+ disable_8259A_irq(0);
+ enable_NMI_through_LVT0(NULL);
+ enable_8259A_irq(0);
+ }
enable_APIC_timer();
/*
* low-memory mappings have been cleared, flush them from
--- linux/include/asm-i386/apic.h.orig Mon Sep 9 21:37:43 2002
+++ linux/include/asm-i386/apic.h Mon Sep 9 21:37:51 2002
@@ -89,6 +89,7 @@
extern unsigned int apic_timer_irqs [NR_CPUS];
extern int check_nmi_watchdog (void);
+extern void enable_NMI_through_LVT0 (void * dummy);
extern unsigned int nmi_watchdog;
#define NMI_NONE 0
-
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This archive was generated by hypermail 2b29 : Sun Sep 15 2002 - 22:00:18 EST