Pull ibm into release branch

[sfrench/cifs-2.6.git] / arch / ia64 / kernel / efi.c

diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
index 772ba6fe110f6c0f56da55c491669debc2ec3787..49b93682c75279956a98650696ec5adfd46554ad 100644 (file)
--- a/arch/ia64/kernel/efi.c
+++ b/arch/ia64/kernel/efi.c
@@ -21,6 +21,7 @@
  *     Skip non-WB memory and ignore empty memory ranges.
  */
 #include <linux/module.h>
+#include <linux/bootmem.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/types.h>
@@ -970,6 +971,11 @@ efi_memmap_init(unsigned long *s, unsigned long *e)
                if (!is_memory_available(md))
                        continue;
 
+#ifdef CONFIG_CRASH_DUMP
+               /* saved_max_pfn should ignore max_addr= command line arg */
+               if (saved_max_pfn < (efi_md_end(md) >> PAGE_SHIFT))
+                       saved_max_pfn = (efi_md_end(md) >> PAGE_SHIFT);
+#endif
                /*
                 * Round ends inward to granule boundaries
                 * Give trimmings to uncached allocator
@@ -1177,3 +1183,33 @@ kdump_find_rsvd_region (unsigned long size,
   return ~0UL;
 }
 #endif
+
+#ifdef CONFIG_PROC_VMCORE
+/* locate the size find a the descriptor at a certain address */
+unsigned long
+vmcore_find_descriptor_size (unsigned long address)
+{
+       void *efi_map_start, *efi_map_end, *p;
+       efi_memory_desc_t *md;
+       u64 efi_desc_size;
+       unsigned long ret = 0;
+
+       efi_map_start = __va(ia64_boot_param->efi_memmap);
+       efi_map_end   = efi_map_start + ia64_boot_param->efi_memmap_size;
+       efi_desc_size = ia64_boot_param->efi_memdesc_size;
+
+       for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) {
+               md = p;
+               if (efi_wb(md) && md->type == EFI_LOADER_DATA
+                   && md->phys_addr == address) {
+                       ret = efi_md_size(md);
+                       break;
+               }
+       }
+
+       if (ret == 0)
+               printk(KERN_WARNING "Cannot locate EFI vmcore descriptor\n");
+
+       return ret;
+}
+#endif