[IA64] IA64 Kexec/kdump

Changes and updates.

1. Remove fake rendz path and related code according to discuss with Khalid Aziz.
2. fc.i offset fix in relocate_kernel.S.
3. iospic shutdown code eoi and mask race fix from Fujitsu.
4. Warm boot hook in machine_kexec to SN SAL code from Jack Steiner.
5. Send slave to SAL slave loop patch from Jay Lan.
6. Kdump on non-recoverable MCA event patch from Jay Lan
7. Use CTL_UNNUMBERED in kdump_on_init sysctl.

Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c
index 60d64950e3c2..0fc5fb7865cf 100644
--- a/arch/ia64/kernel/iosapic.c
+++ b/arch/ia64/kernel/iosapic.c
@@ -288,6 +288,27 @@ nop (unsigned int irq)
         /* do nothing... */
 }
 
+
+#ifdef CONFIG_KEXEC
+void
+kexec_disable_iosapic(void)
+{
+        struct iosapic_intr_info *info;
+        struct iosapic_rte_info *rte;
+        u8 vec = 0;
+        for (info = iosapic_intr_info; info <
+                        iosapic_intr_info + IA64_NUM_VECTORS; ++info, ++vec) {
+                list_for_each_entry(rte, &info->rtes,
+                                rte_list) {
+                        iosapic_write(rte->addr,
+                                        IOSAPIC_RTE_LOW(rte->rte_index),
+                                        IOSAPIC_MASK|vec);
+                        iosapic_eoi(rte->addr, vec);
+                }
+        }
+}
+#endif
+
 static void
 mask_irq (unsigned int irq)
 {