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-rw-r--r--arch/ia64/kernel/setup.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 5fa09d141ab7..7d6fe65c93f4 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -251,6 +251,12 @@ reserve_memory (void)
}
#endif
+#ifdef CONFIG_PROC_VMCORE
+ if (reserve_elfcorehdr(&rsvd_region[n].start,
+ &rsvd_region[n].end) == 0)
+ n++;
+#endif
+
efi_memmap_init(&rsvd_region[n].start, &rsvd_region[n].end);
n++;
@@ -453,6 +459,30 @@ static int __init parse_elfcorehdr(char *arg)
return 0;
}
early_param("elfcorehdr", parse_elfcorehdr);
+
+int __init reserve_elfcorehdr(unsigned long *start, unsigned long *end)
+{
+ unsigned long length;
+
+ /* We get the address using the kernel command line,
+ * but the size is extracted from the EFI tables.
+ * Both address and size are required for reservation
+ * to work properly.
+ */
+
+ if (elfcorehdr_addr >= ELFCORE_ADDR_MAX)
+ return -EINVAL;
+
+ if ((length = vmcore_find_descriptor_size(elfcorehdr_addr)) == 0) {
+ elfcorehdr_addr = ELFCORE_ADDR_MAX;
+ return -EINVAL;
+ }
+
+ *start = (unsigned long)__va(elfcorehdr_addr);
+ *end = *start + length;
+ return 0;
+}
+
#endif /* CONFIG_PROC_VMCORE */
void __init