[Crash-utility] [PATCH 1/2] Add x86_64 linux-2.6.27 support: Catch up the PAGE_OFFSET change.
Hi,
Since linux-2.6.27 of x86_64, PAGE_OFFSET has been changed to
0xffff880000000000 from 0xffff810000000000.
This patch catches up this change.
I tested it on linux-2.6.27-rc5, and it works fine.
Thanks
Ken'ichi Ohmichi
Signed-off-by: Ken'ichi Ohmichi <oomichi(a)mxs.nes.nec.co.jp>
---
diff -rpuN crash-4.0-7.1.orig/defs.h crash-4.0-7.1/defs.h
--- crash-4.0-7.1.orig/defs.h 2008-09-01 20:19:06.000000000 +0900
+++ crash-4.0-7.1/defs.h 2008-09-01 20:22:07.000000000 +0900
@@ -2124,6 +2124,8 @@ struct load_module {
#define VMEMMAP_VADDR_2_6_24 0xffffe20000000000
#define VMEMMAP_END_2_6_24 0xffffe2ffffffffff
+#define PAGE_OFFSET_2_6_27 0xffff880000000000
+
#define USERSPACE_TOP_XEN 0x0000800000000000
#define PAGE_OFFSET_XEN 0xffff880000000000
#define VMALLOC_START_ADDR_XEN 0xffffc20000000000
diff -rpuN crash-4.0-7.1.orig/x86_64.c crash-4.0-7.1/x86_64.c
--- crash-4.0-7.1.orig/x86_64.c 2008-09-01 20:19:06.000000000 +0900
+++ crash-4.0-7.1/x86_64.c 2008-09-01 20:32:14.000000000 +0900
@@ -178,7 +178,6 @@ x86_64_init(int when)
case VM_2_6_11:
/* 2.6.11 layout */
machdep->machspec->userspace_top = USERSPACE_TOP_2_6_11;
- machdep->machspec->page_offset = PAGE_OFFSET_2_6_11;
machdep->machspec->vmalloc_start_addr = VMALLOC_START_ADDR_2_6_11;
machdep->machspec->vmalloc_end = VMALLOC_END_2_6_11;
machdep->machspec->modules_vaddr = MODULES_VADDR_2_6_11;
@@ -190,6 +189,13 @@ x86_64_init(int when)
if (symbol_exists("vmemmap_populate"))
machdep->flags |= VMEMMAP;
+ if (symbol_exists("end_pfn"))
+ /* 2.6.11 layout */
+ machdep->machspec->page_offset = PAGE_OFFSET_2_6_11;
+ else
+ /* 2.6.27 layout */
+ machdep->machspec->page_offset = PAGE_OFFSET_2_6_27;
+
machdep->uvtop = x86_64_uvtop_level4;
break;
---