Hi, Itsuro >--- include/xen/interface/kexec.h.org 2008-03-25 09:08:43.000000000 +0900 >+++ include/xen/interface/kexec.h 2008-03-25 09:12:02.000000000 +0900 >@@ -111,6 +111,10 @@ > #define KEXEC_RANGE_MA_CRASH 0 /* machine address and size of crash area */ > #define KEXEC_RANGE_MA_XEN 1 /* machine address and size of Xen itself */ > #define KEXEC_RANGE_MA_CPU 2 /* machine address and size of a CPU note */ >+#define KEXEC_RANGE_MA_VMCOREINFO 3 /* machine address and size of >vmcoreinfo */ >+ >+extern size_t vmcoreinfo_max_size_xen; Why don't you use VMCOREINFO_BYTES (4096) instead of vmcoreinfo_max_size_xen? Best Regards, Akio Takebe