The pseries hypervisor attempts to detect and prevent an
infinite loop of kernel crashes and auto-reboots. It does
so by refusing to auto-reboot unless we indicate that the
current boot was sucessful. So, indicate success late in
the boot sequence.
Signed-off-by: Linas Vepstas <[EMAIL PROTECTED]>
----
Sigh. This is a side-effect of the patch I sent yesterday.
Its supposed to simplify the management large numbers of
partitions.
arch/powerpc/platforms/pseries/setup.c | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
Index: linux-2.6.24-rc3-git1/arch/powerpc/platforms/pseries/setup.c
===================================================================
--- linux-2.6.24-rc3-git1.orig/arch/powerpc/platforms/pseries/setup.c
2007-11-20 18:37:14.000000000 -0600
+++ linux-2.6.24-rc3-git1/arch/powerpc/platforms/pseries/setup.c
2007-11-20 19:08:12.000000000 -0600
@@ -491,6 +491,37 @@ void pSeries_power_off(void)
for (;;);
}
+/**
+ * pSeries_auto_restart - tell hypervisor that boot succeeded.
+ *
+ * The pseries hypervisor attempts to detect and prevent an
+ * infinite loop of kernel crashes and auto-reboots. It does
+ * so by refusing to auto-reboot unless we indicate that the
+ * current boot was sucessful. So, indicate success late in
+ * the boot sequence.
+ */
+static int __init pSeries_auto_restart(void)
+{
+ static char buff[3]; /* static so that its in RMO region */
+ int rc;
+ int token = rtas_token("ibm,set-system-parameter");
+ if (!token)
+ return 0;
+
+ /* partition_auto_restart is 21; set to to 1 to auto-restart the OS. */
+ buff[0] = 0;
+ buff[1] = 1; /* length */
+ buff[2] = 1; /* value */
+ do {
+ rc = rtas_call (token, 2, 1, NULL, 21, buff);
+ } while (rtas_busy_delay(rc));
+ if (rc)
+ printk(KERN_INFO "pSeries_auto_restart(): "
+ "unable to setup autorestart, rc=%d\n", rc);
+ return 0;
+}
+late_initcall(pSeries_auto_restart);
+
#ifndef CONFIG_PCI
void pSeries_final_fixup(void) { }
#endif
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