[PATCH 2/5] stack overflow safe kdump (2.6.15-i386) -use_safe_smp_processor_id

From: Fernando Luis Vazquez Cao
Date: Mon Jan 16 2006 - 08:22:48 EST


Substitute "smp_processor_id" with the stack overflow-safe
"safe_smp_processor_id" in the reboot path to the second kernel.

---
diff -urNp linux-2.6.15/arch/i386/kernel/crash.c
linux-2.6.15-sov/arch/i386/kernel/crash.c
--- linux-2.6.15/arch/i386/kernel/crash.c 2006-01-03 12:21:10.000000000
+0900
+++ linux-2.6.15-sov/arch/i386/kernel/crash.c 2006-01-16
20:28:31.000000000 +0900
@@ -120,7 +120,7 @@ static void crash_save_self(struct pt_re
struct pt_regs regs;
int cpu;

- cpu = smp_processor_id();
+ cpu = safe_smp_processor_id();
if (saved_regs)
crash_setup_regs(&regs, saved_regs);
else
@@ -211,7 +211,7 @@ void machine_crash_shutdown(struct pt_re
local_irq_disable();

/* Make a note of crashing cpu. Will be used in NMI callback.*/
- crashing_cpu = smp_processor_id();
+ crashing_cpu = safe_smp_processor_id();
nmi_shootdown_cpus();
lapic_shutdown();
#if defined(CONFIG_X86_IO_APIC)


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