Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

1 files changed, 61 insertions, 2 deletions

diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index d10404a4175..ad567b8d432 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 +254,47 @@ reserve_memory (void)
 	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. If offset is 0, then it is determined automatically.
+	 * 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 (*from == '@')
+				base = memparse(from+1, &from);
+			else
+				base = 0;
+			if (size) {
+				if (!base) {
+					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 +306,7 @@ reserve_memory (void)
 	sort_regions(rsvd_region, num_rsvd_regions);
 }
 
+
 /**
  * find_initrd - get initrd parameters from the boot parameter structure
  *
@@ -396,6 +440,21 @@ static __init int setup_nomca(char *s)
 }
 early_param("nomca", setup_nomca);
 
+#ifdef CONFIG_PROC_VMCORE
+/* elfcorehdr= specifies the location of elf core header
+ * stored by the crashed kernel.
+ */
+static int __init parse_elfcorehdr(char *arg)
+{
+	if (!arg)
+		return -EINVAL;
+
+        elfcorehdr_addr = memparse(arg, &arg);
+	return 0;
+}
+early_param("elfcorehdr", parse_elfcorehdr);
+#endif /* CONFIG_PROC_VMCORE */
+
 void __init
 setup_arch (char **cmdline_p)
 {
@@ -615,6 +674,7 @@ get_model_name(__u8 family, __u8 model)
 {
 	char brand[128];
 
+	memcpy(brand, "Unknown", 8);
 	if (ia64_pal_get_brand_info(brand)) {
 		if (family == 0x7)
 			memcpy(brand, "Merced", 7);
@@ -622,8 +682,7 @@ get_model_name(__u8 family, __u8 model)
 			case 0: memcpy(brand, "McKinley", 9); break;
 			case 1: memcpy(brand, "Madison", 8); break;
 			case 2: memcpy(brand, "Madison up to 9M cache", 23); break;
-		} else
-			memcpy(brand, "Unknown", 8);
+		}
 	}
 	if (brandname[0] == '\0')
 		return strcpy(brandname, brand);