[Patch 4/8] ia64: implement crashkernel=auto

[Amerigo Wang <amwang@redhat.com>]

Since in patch 2/8 we already implement the generic part, this will
add the rest part for ia64.

Signed-off-by: WANG Cong <amwang@redhat.com>

---

Index: linux-2.6/arch/ia64/include/asm/kexec.h
===================================================================
--- linux-2.6.orig/arch/ia64/include/asm/kexec.h
+++ linux-2.6/arch/ia64/include/asm/kexec.h
@@ -19,6 +19,29 @@
                 flush_icache_range(page_addr, page_addr + PAGE_SIZE); \
         } while(0)
 
+#ifdef CONFIG_KEXEC_AUTO_RESERVE
+#define ARCH_HAS_DEFAULT_CRASH_SIZE
+static inline
+unsigned long long arch_default_crash_size(unsigned long long total_size)
+{
+	if (total_size >= 4ULL<<30 && total_size < 12ULL<<30)
+		return 1ULL<<28;
+	else if (total_size >= 12ULL<<30 && total_size < 128ULL<<30)
+		return 1ULL<<29;
+	else if (total_size >= 128ULL<<30 && total_size < 256ULL<<30)
+		return 3ULL<<28;
+	else if (total_size >= 256ULL<<30 && total_size < 378ULL<<30)
+		return 1ULL<<30;
+	else if (total_size >= 318ULL<<30 && total_size < 512ULL<<30)
+		return 3ULL<<29;
+	else if (total_size >= 512ULL<<30 && total_size < 768ULL<<30)
+		return 2ULL<<30;
+	else if (total_size >= 768ULL<<30)
+		return 3ULL<<30;
+}
+#include <asm-generic/kexec.h>
+#endif
+
 extern struct kimage *ia64_kimage;
 extern const unsigned int relocate_new_kernel_size;
 extern void relocate_new_kernel(unsigned long, unsigned long,