[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>
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index d10404a..14e1200 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -43,6 +43,8 @@
#include <linux/initrd.h>
#include <linux/pm.h>
#include <linux/cpufreq.h>
+#include <linux/kexec.h>
+#include <linux/crash_dump.h>
#include <asm/ia32.h>
#include <asm/machvec.h>
@@ -252,6 +254,41 @@
efi_memmap_init(&rsvd_region[n].start, &rsvd_region[n].end);
n++;
+#ifdef CONFIG_KEXEC
+ /* crashkernel=size@offset specifies the size to reserve for a crash
+ * kernel.(offset is ingored for keep compatibility with other archs)
+ * By reserving this memory we guarantee that linux never set's it
+ * up as a DMA target.Useful for holding code to do something
+ * appropriate after a kernel panic.
+ */
+ {
+ char *from = strstr(saved_command_line, "crashkernel=");
+ unsigned long base, size;
+ if (from) {
+ size = memparse(from + 12, &from);
+ if (size) {
+ sort_regions(rsvd_region, n);
+ base = kdump_find_rsvd_region(size,
+ rsvd_region, n);
+ if (base != ~0UL) {
+ rsvd_region[n].start =
+ (unsigned long)__va(base);
+ rsvd_region[n].end =
+ (unsigned long)__va(base + size);
+ n++;
+ crashk_res.start = base;
+ crashk_res.end = base + size - 1;
+ }
+ }
+ }
+ efi_memmap_res.start = ia64_boot_param->efi_memmap;
+ efi_memmap_res.end = efi_memmap_res.start +
+ ia64_boot_param->efi_memmap_size;
+ boot_param_res.start = __pa(ia64_boot_param);
+ boot_param_res.end = boot_param_res.start +
+ sizeof(*ia64_boot_param);
+ }
+#endif
/* end of memory marker */
rsvd_region[n].start = ~0UL;
rsvd_region[n].end = ~0UL;
@@ -263,6 +300,7 @@
sort_regions(rsvd_region, num_rsvd_regions);
}
+
/**
* find_initrd - get initrd parameters from the boot parameter structure
*