powerpc/kdump: CPUs assume the context of the oopsing CPU

[pandora-kernel.git] / arch / powerpc / kernel / crash.c

diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c
index 341d8af..7ced58d 100644 (file)
--- a/arch/powerpc/kernel/crash.c
+++ b/arch/powerpc/kernel/crash.c
@@ -347,10 +347,12 @@ int crash_shutdown_unregister(crash_shutdown_t handler)
 EXPORT_SYMBOL(crash_shutdown_unregister);
 
 static unsigned long crash_shutdown_buf[JMP_BUF_LEN];
+static int crash_shutdown_cpu = -1;
 
 static int handle_fault(struct pt_regs *regs)
 {
-       longjmp(crash_shutdown_buf, 1);
+       if (crash_shutdown_cpu == smp_processor_id())
+               longjmp(crash_shutdown_buf, 1);
        return 0;
 }
 
@@ -391,6 +393,7 @@ void default_machine_crash_shutdown(struct pt_regs *regs)
         */
        old_handler = __debugger_fault_handler;
        __debugger_fault_handler = handle_fault;
+       crash_shutdown_cpu = smp_processor_id();
        for (i = 0; crash_shutdown_handles[i]; i++) {
                if (setjmp(crash_shutdown_buf) == 0) {
                        /*
@@ -404,6 +407,7 @@ void default_machine_crash_shutdown(struct pt_regs *regs)
                        asm volatile("sync; isync");
                }
        }
+       crash_shutdown_cpu = -1;
        __debugger_fault_handler = old_handler;
 
        /*