On Wed, Nov 26, 2008 at 10:00:39AM +0100, Bernhard Walle wrote: > On Xen, we have to use /proc/iomem to retrieve the memory area for the kexec'd > kernel, not /sys/firmware/memmap. Dom0 kernel gets a E820 map that contains > only one region: > > 0000000000000000-0000000018e5e000 (System RAM) > > Compared to the /proc/iomem: > > 00000000-0009cbff : System RAM > 0009cc00-0009ffff : reserved > 000ce000-000d3fff : reserved > 000e0000-000fffff : reserved > 00100000-1fd6ffff : System RAM > 01000000-04ffffff : Crash kernel > 1ec00000-1fbfffff : Hypervisor code and data > 1f0b4680-1f0b4873 : Crash note > 1f0b4900-1f0b4a93 : Crash note > 1f0b4b80-1f0b4d13 : Crash note > 1f0b4e00-1f0b4f93 : Crash note > ... > > Without that patch, /proc/vmcore is empty in the kexec'd kernel and I'm unable > to copy the crashdump. Thanks Bernhard, applied. -- Simon Horman VA Linux Systems Japan K.K., Sydney, Australia Satellite Office H: www.vergenet.net/~horms/ W: www.valinux.co.jp/en
