Re: [PATCH v1] kdump, vmcoreinfo: report memory sections virtual addresses

Commit Message

Baoquan He Sept. 13, 2016, 7:08 a.m. UTC

Hi Thomas,

I used below code and it works. Since using VMCOREINFO_NUMBER can reuse
the existing struct number_table to import the data. It makes change
easier. But the place could be next to KERNEL_IMAGE_SIZE, or as your
patch did, both is fine.

---
 kernel/kexec_core.c | 3 +++
 1 file changed, 3 insertions(+)

Patch

diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c
index 5616755..81bde86 100644
--- a/kernel/kexec_core.c
+++ b/kernel/kexec_core.c
@@ -1469,6 +1469,9 @@  static int __init crash_save_vmcoreinfo_init(void)
 	VMCOREINFO_NUMBER(PAGE_BUDDY_MAPCOUNT_VALUE);
 #ifdef CONFIG_X86
 	VMCOREINFO_NUMBER(KERNEL_IMAGE_SIZE);
+	VMCOREINFO_NUMBER(PAGE_OFFSET);
+	VMCOREINFO_NUMBER(VMALLOC_START);
+	VMCOREINFO_NUMBER(VMEMMAP_START);
 #endif
 #ifdef CONFIG_HUGETLB_PAGE
 	VMCOREINFO_NUMBER(HUGETLB_PAGE_DTOR);