[IA64] kexec: Unregister MCA handler before kexec

[linux-2.6-block.git] / arch / ia64 / kernel / machine_kexec.c

diff --git a/arch/ia64/kernel/machine_kexec.c b/arch/ia64/kernel/machine_kexec.c
index 0823de1f6ebe2a44fb88dfa8baeac12f278bbfb0..3d3aeef469476a85ed4d149608ebd891e72c5f6c 100644 (file)
--- a/arch/ia64/kernel/machine_kexec.c
+++ b/arch/ia64/kernel/machine_kexec.c
@@ -24,6 +24,8 @@
 #include <asm/delay.h>
 #include <asm/meminit.h>
 #include <asm/processor.h>
+#include <asm/sal.h>
+#include <asm/mca.h>
 
 typedef NORET_TYPE void (*relocate_new_kernel_t)(
                                        unsigned long indirection_page,
@@ -85,13 +87,26 @@ static void ia64_machine_kexec(struct unw_frame_info *info, void *arg)
        void *pal_addr = efi_get_pal_addr();
        unsigned long code_addr = (unsigned long)page_address(image->control_code_page);
        int ii;
+       u64 fp, gp;
+       ia64_fptr_t *init_handler = (ia64_fptr_t *)ia64_os_init_on_kdump;
 
        BUG_ON(!image);
        if (image->type == KEXEC_TYPE_CRASH) {
                crash_save_this_cpu();
                current->thread.ksp = (__u64)info->sw - 16;
+
+               /* Register noop init handler */
+               fp = ia64_tpa(init_handler->fp);
+               gp = ia64_tpa(ia64_getreg(_IA64_REG_GP));
+               ia64_sal_set_vectors(SAL_VECTOR_OS_INIT, fp, gp, 0, fp, gp, 0);
+       } else {
+               /* Unregister init handlers of current kernel */
+               ia64_sal_set_vectors(SAL_VECTOR_OS_INIT, 0, 0, 0, 0, 0, 0);
        }
 
+       /* Unregister mca handler - No more recovery on current kernel */
+       ia64_sal_set_vectors(SAL_VECTOR_OS_MCA, 0, 0, 0, 0, 0, 0);
+
        /* Interrupts aren't acceptable while we reboot */
        local_irq_disable();