At Thu, 22 Apr 2010 22:42:25 -0700, Eric W. Biederman wrote: > > We have observed that on a machine which has 66G memory, when we do > > crashkernel=1G at 4G, kexec failed to load the crash kernel, but the memory > > reservation _did_ succeed. > > Did you try loading vmlinux? If not this sounds like the fact that > /sbin/kexec doesn't realize it can boot a 64bit bzImage in 64bit > mode. /sbin/kexec currently has hardcoded limitations for bzImage and initrd: include/x86/x86-linux.h: #define DEFAULT_INITRD_ADDR_MAX 0x37FFFFFF #define DEFAULT_BZIMAGE_ADDR_MAX 0x37FFFFFF This is easy to override. However, purgatory code still wants to see kernel below 2 Gb (32-bit signed relocations). -- wbr, Vitaly
